Manual For Twin Screw Pump

 

  Contents Foreword -------------------------------------------------------------------------------1 -------------------------------------------------------------------------------1 Section I: Summary------------------------------------------------------------------1 Section II: Receiving, Stevedoring and Storage-------------------------------2 Section III: Installation--------------------------------------------------------------3 Section IV: Lubricating-------------------------------------------------------------4 Section V: Heating & Cooling-------------------------------------------------------5

Section VI: Starting, Running and Stopping-----------------------------------5 Section VII: Notes on Handling High-viscosity Liquid ---------------------6 ---------------------6 Section VIII: Routine Maintenance----------------------------------------------6 Section IX: Common Breakdowns & Troubleshooting Troubleshooting----------------------7 Section X: How to Dismantle------------------------------------------------------8 Section XI: Table of Wearing Parts-----------------------------------------------9 Section XII: Table of Shaft Bearing & Seal----------------------------------------9 Section XIII: Construction of Twin Screw Pump---------------------------------10

Section XIV: Outline Dimension-------------------------------------------------14

 

Foreword The Manual is for guiding the installation, operation and maintenance of 2G(2GM), 2H(2HE&2HM) and 2W(2WE&2WM) series twin screw pumps. We expect the under-mentioned instructions could be understood well and accurately followed by user. For any questions beyond this manual, please contact our technical department directly.

Section I: Summary 2G, 2H and 2W twin screw pump is a kind of Positive Displacement Rotary Pump, which can handle the liquid with viscosity below 3000mm2/s(cSt). The pump consists of two spindles rotating in opposition. During pump’s working, a pair of screws fixed on two shafts get in mesh and form seal cavity against  pump’ss inner chamber. With  pump’ With rotating of two spindles, liquid in seal cavity moves axially and is transferred from inlet stably and continuously to outlet of the pump. 2G single-suction twin screw pump and 2HM,2WM double-suction twin screw pump are designed with external bearing and pump’s chamber is separated from bearing chamber by mechanical seal and framework oil seal, therefore which can transfer liquids with or without lubricity as well as liquids with high-viscosity. Material normally used for rotary ring and stationary ring of mechanical seal: TC(or ceramic) and Graphite. 2HE and 2HM twin screw pumps are designed with internal bearing. Pump’s chamber is conjunct with  bearing chamber and they are mainly for transferring liquids with lubricity. Material normally used for rotary ring and stationary ring of mechanical seal: A. TC and TC. B. TC(or ceramic) and Graphite. Pump’s spindle is made up of screws and separated shaft processed by high-strength alloy steel or stainless steel for meeting the working conditions upon big power and big torque. Different metals such as Nodular Cast Iron, Nitrided Steel and Stainless Steel are selected for screws to meet the requirement to transfer different liquids. Timing gear is adopted to pass the power from driving shaft to driven shaft, which enables two spindles to rotate synchronously during their meshing, therefore low wear and big reliability. Special construction is designed at pump’s inlet to ensure uniform flow of the suctioned liquid and low  pressure loss, therefore the pump has small NPSHr. NPSHr. And position of inlet and outlet can keep enough liquid inside the pump when it stops working, so the pump is good self-priming. Wetted parts of the pump should be selected according the chemical property of the liquid to pump: for liquids without erosion or unclean liquids, to use general steel or iron; for liquids with erosion or clean liquids, to use suitable stainless steel; for explosive or flammable liquids, such as gasoline, toluene, to use  bronze; for liquids with small solids, to use high-rigidity nitrided steel; for special requirement for material, please indicate when ordering. 1-1  Notice for Safety User is obligatory to correctly install the pump and operate safely. User must take all necessary measures to ensure the execution of safety requirement from manufacturer and industry standard for  

１ 

 

 positive displacement pump (twin screw pump) 1. Select proper proper carne and enough-strength steel cable when installing and stevedoring 2.  When testing pipe’s pressure and flushing pipe, the pump MUST BE SEPARTED. Or the seal of  pump will be damaged and incurred leakage. 3.  Ensure the pipe to be swept strictly and be unblocked before first starting. 4.  Fasten the plug screw in drain hole to prevent from polluting leakage 5.  Select suitable coupling and guard and fix them well. 6.  Ensure safety valve to work under proper capacity and pressure. 7.  Make sure the pump works under right condition, otherwise, it can cause serious damage of equipment and bring danger to operator’s operator ’s safety. safety. 8.  The pump can only be maintained after a fter it’s stopped. 9.  The pump is strictly forbidden to work without medium liquids, or the screws, bearings and mechanical seals will be damaged. 1-2. Warranty 1. Within warranty period, we will provide provide repair or replace unqualified unqualified parts at no charge charge for the  pump’ss malfunctions caused  pump’ ca used by workmanship. We do not take aany ny liability for the damage caused ca used  by incorrect installation or operation. 2. Our liability to the loss caused by defect material material or workmanship is limited to replacing or repairing damage spare parts and we do not take legal liability for the loss caused directly or indirectly by using our products or any other reasons, such as time-loss, possession-loss and safety-loss. In general, we will not take any responsibility for the damage or hurt to other equipment, machine, building, articles or personnel caused by user’s installing and using our  product. 3. Warranty is invalid under following situations: a. Spare parts are dismounted, repaired or replaced without formal approval by our technical department, quality inspection department and sales department.  b. Pump’s Pump’s breakdown caused by contingency, contingency, operator’s careless operation or improper working condition. c. To pump the liquids not stated in contract, which might erode the pump or impair pump’s running. 4. The warranty is NOT applicable to (a) corrosion failure & abrasion failure (b) natural disaster failure (c) failure by absence of correct maintenance (d) other charge for filed-repair and replacement of spare parts.

Section II: Receiving, Stevedoring and storage 2-1. Receiving 1. The equipments should be put in a dry place without shinning shinning and raining .The time time of laying them in the open air should be not exceed one month, and our company has no responsibility for the damage caused by improper storage. 2. User should immediately check up the equipments against any loss or damage on receipt and inform shipper and our company timely for any problem. Claim for compensation must be made immediately after checking of received equipments.  

２ 

 

2-2. Stevedoring Stevedoring Lifting pump: infix one end of steel cable into lifting hole of casing or bearing support and infix the other end of steel cable into hoop of motor or hoop indicated on base plate. 2-3. Storage and Maintenance The pump must be preserved well as follows if laid up for a long time after installation. 1. Store the pump in a dry and ventilated place, and replace seals in a year. 2. Fill pump chamber with machine oils and seal inlet and outlet to prevent the dust and impurities from the entering chamber. 3. Coat the non-painted metal surfaces with antirust. 4. Cover the pump and motor with waterproof coating.

Section III: Installation The under-mentioned instruction is a practicable guide for user’s installing pump. Only when the following instruction is followed strictly or with other practical experience on installation can the twin screw pump work stably and reliably with long life.

3-1. Location The installation site should close to oil pool. Pump room should be dry and has enough space for installing and repairing. One-meter space around pump should be left for repair, better still bigger space if possible. 3-2. Base The pump should be installed on firm cement base whose thickness is no less than 30-50cm, subject to the size of pump set. And square hole (12x12cm) should be set ahead in cement base according to the position of stone bolt of pump set. Put the pump set on base after the cement is solidified and take the second grouting after stone bolt fixed. If the pump is installed on steel deck or other buildings, it should be installed on them directly and to  be as close to primary component as possible, besides to add support to avoid deforming and vibrating. Required area for installation and position for stone bolt should follow the outline dimension supplied  by our company. company. 3-3. Installation Fix the pump set on base with stone bolt and check up the fastening between pump, motor and base. Check and adjust the alignment of coupling: turn coupling by hand to confirm if it rotates smoothly. Pease refer to the following demonstration as two methods to align coupling: 3-4. Pipe System 1. Clean the pipe before installing and get rid of iron rust, ESW and dirt inside pipe. Twin Twin screw  pump is good self-priming and is easily blocked by the dirt sucked into chamber from pipe, so it is important to clean out the pipe, especially pipe at inlet before mounting the pipe with flanges of in/outlet. 2. Try to use short and straight pipe to reduce resistance and use big-curvature pipe. 3. The size of pump should be identical with that of the the pump’s pump’s in/outlet. If possible, bigger-size pipe  

３ 

 

4. 5. 6.

is preferable to reduce resistance of oil-sucking. Use brace to support support pipe and valves, preventing pump from bearing pipe’s weight. NPSHa of suction pipe should be be bigger than NPSHr NPSHr of pump, otherwise the pump can’t can’t work well Pressure test and performance test have been done before delivery. delivery. User should keep pump apart while doing test and flush for pipe, otherwise the pump’s seal will be damaged, causing leakage.

3-5. Accessory of Pipe System 1. Filter. Install the filters at the suction-pipe to keep impurities from entering pump. Standard of filter screen: 20-30 mesh /inch. Filter area of filter should be 3-5 times larger than sectional area of pipe. For handling high-viscosity liquids, the filter area should be extended moderately: the standard should be 10-20 mesh/in and filter area of filter should be over 5 times larger than sectional area of pipe. The filter should be cleaned regularly and cleaning period should depend on cleanliness of medium liquids.

2.

3. 4.

Check Valve. Valve. Check valve valve or globe globe valve is usually mounted with discharge pipe to prevent back flow from impacting pump after pump stalls. When several pumps are installed in parallel, only with check valve can pumps are started respectively. In case of long pipe line limited to installing field, the check valve can be mounted on the end of suction pipe to reduce resistance of oil-sucking and improve pump’s self-priming. (pump is suggested to be installed close to oil tank to shorten the pipe line) Safety Valve. Valve. Both of single-suction and double-suction double-suction twin screw pump are mounted with safety valve. Opening pressure is five times the rated working pressure of pump. Pressure Gauge. Compound Compound gauge and pressure gauge can be fixed at flanges of of inlet and outlet to monitor pump’s working condition and standard of screw hole is M14x1.5. Measuring range of  pressure gauge is 1.5-2 times the rated working pressure of pump.

Section IV: Lubricating 2HE&2WE series double-suction twin screw pump with internal bearing: timing gears and bearing to be lubricated by medium liquids, no lube oil required. 2HM&2WM series double-suction twin screw pump external bearing: timing gear and bearing near the gear box to be lubricated by 30# engine oil; bearing near bare shaft to be lubricated by Lithium Base Grease or 1# Calcium Base Grease. 2G series single-suction twin screw pump: timing gear to be lubricated by 30# engine oil; bearing to be lubricated by Lithium Base Grease or 1# Calcium Base Grease. Oil in gear box should be timely replenished to “midline” of oil level and be replaced every 3-6 months. Gear box should  be cleaned out every every 3-6 months. Please find following interval for replacing oil in gear box box for reference: reference: Interval of replacing oil in gear box: Accumulated running time of new pump: 250 hours Intermittent running: every accumulated: 500-1000 hours Continuous running: every accumulated: 2000 hours Gear and bearing will be damaged when pump works with absence of oil in gear box.

 

４ 

 

Section V: Heating & Cooling To meet the requirement to handle various liquids, heating and cooling devices are mounted in 2HM&2WM series double-suction twin screw pump, and user can infuse steam or cooling water if required.(please indicate when order) Steam jacket is at the foot of pump, heated by steam or heat conducting oil. It is usually required when handling high-viscosity liquid which is to be solidified at normal temperature. Pressure of steam or heat conducting oil is usually below 0.6MPa. Cooling box is at the cover of gear box and it cool the gear box with circ circulating ulating water. Pressure of cooling water is usually below 0.3Mpa and its flow rate is 2-3m 3/h. Cooling device is usually needed when handling flammable, explosive liquids or volatile liquids. Stainless steel gear box is required if sea water is used for circulating water (please indicate when order).

Section VI: Starting, Running and Stopping 6-1. Examining Before Starting To ensure pump’s working safely, it is very necessary to examine the whole system carefully before starting for the first time as following: 1. Examine the situation of installation (referring to 3-3), especially the fastening of stone bolt and alignment of coupling (turn coupling by hand and confirm if it rotates smoothly)

2.  Examine whether there is enough medium liquids inside pump and it is strictly forbidden to start  pump when there is no or less liquid in pump. pump. 3.  Examine if the oil in gear box is enough. Overfull engine oil will cause overheating of the gear box and lacking will damage gear and bearing. 4.  Examine the rotation direction of pump, which should be in accordance with the indication in name  plate while inching pump. Conventional rotation rotat ion direction of the shaft: clockwise facing fa cing to shaft (if not specified). 5. Examine if the inlet and outlet are in correct position. 2G series p pump: ump: the inlet is on the top; 2HE&2HM series pump: facing to shaft, the inlet is at right-side; 2WE&2WM: outlet is on the top. (special requirement excluded) 6. Examine the situation of opening and closing of valves. 6-2. Starting 1. Open all the valves in the suction & discharge pipe line 2. Start motor(engine). 6-3. Running 1. Check up if there is any abnormal noise and vibration during pump’s test running. Any of these  problems must be solved immediately. immediately. 2. Check up if there is abnormal temperature-rising with pump, bearing support and gear box ( normally not exceed 75oC). Surface temperature of bearing support and gear box is allowed up to 75oC and invariable temperature within this range is the best indicator for pump’s running well. If the temperature rises suddenly, it indicates the problems with bearing or gear box, which needs to  be checked immediately.  

５ 

 

3. Check up if there is any leakage with mechanical seal. 4. Pump is usually thought to be qualified after one-hour test running without problem, and then it can be put into use. 6-4. Stopping Cut off power supply and close valves in pipe line.

Section VII: Notes on Handling High-viscosity Liquids 7-1.

Following operations operations must be abided by when when the pump is used for handling high-viscosity or solidifying liquids to avoid any breakdown of seal or damage to pump. 7-2. Try to set the oil tank above above the pump’ pump’ss inlet (flooded) to avoid failure to sucking in oil. Use Use filer of 10-20mesh/in and of filtering area over 5 times section area of pipe. Try to user bigger size pipe than pump’s inlet to reduce resistance against sucking oil. 7-3. Heat the pump casing and filter with steam or heat conducting oil before starting pump until the viscosity of residual medium inside pump becomes low enough, then trigger the coupling  by hand to confirm if it can rotate without block. 7-4. Pump circularly related solvent for 3-5 minutes in order to clean the residual medium and ready for next job. Prevent steam from entering pump while cleaning pipe line, which will damage seal. 7-5.  Check up regularly if there is any leakage, block and noise with pipe line as well abnormal rising of power absorbed and then repair them timely. Clean up filter regularly to ensure smooth oil-suction.

Section VIII: Routine Maintenance 8-1. Daily Maintenance

1. 2. 3.

4. 5.

Check whether the engine oil in gear box is enough enough before staring p pump ump and replenish it if necessary. Check if there is any abnormal noise and vibration. Check if there is leakage when pump is working For mechanical seal, it is allowed to have a little leakage (2~5 drops every minute) and it must be exchanged or repaired when leakage increases largely. Check regularly if the indicating value of compound compound gauge and pressure gauge is in normal range. Please refer to “Notes on Handling High-viscosity Liquids” for maintaining pump to handle high-viscosity liquid.

8-2. Monthly Maintenance 1. Open the valves and run the pump for a few minutes for the pump not not working over over one week. 2. Examine all the valves at the suction and discharge pipe. 3. Check whether the engine oil in gear box is enough; Clean Clean gear box or replace oil every 3-6

months or refer to 4.

 

Section IV: Lubricating 

Keep all the nuts on the base and all the bolts fastened. Check the the alignment of of the coupling coupling and turn it by hand to confirm if it rotates smoothly. ６ 

 

8-3. Yearly Maintenance 1. Examine if the nuts on base and all the bolts are fastened. Check the alignment of the coupling and turn it by hand to confirm if it rotates smoothly. 2. Clean up pump, replace grease in bearing and engine oil in gear box. 3. Examine the capacity and pressure of the pump. pump. Overhaul the pump or replace damaged damaged parts if capacity and pressure declines largely and do not dismantle the pump if still in good performance.

Section IX: Common Breakdowns & Troubleshooting Phenomena

Reason

Solution

1.Incorrect rotation direction or valve closed 2.No medium liquid in pump chamber 3. Air leakage with suction pipe 4.The suction pipe NOT immersed in oil 5.The suction head is too long  No discharge or less

6.Insufficient or blocked filter 7.Too low pressure set for safety valve or it’s  blocked

 No pressure or low Oil leakage with seal

Abnormal noise or vibration

Safety fails to function

Motor is overloaded

 

1.Reverse rotation direction or open valve 2.Infuse medium into chamber 3.Check connections and seal them 4.Check the suction pressure and raise the oil level of tank 5.Measure the suction pressure raise the oil level of tank 6.Replace or clean filter and add filtering area 7.Readjust safety valve’s pressure or clean it

8.Viscosity 8.V iscosity of medium is too high 9.T 9.Too oo high vacuum or pressure caused by  blocked pipe 10. Pump is worn or damaged 1. Too low pressure set for safety valve or it’s  blocked 2.Leakage with pipe 3. Pump is worn or damaged Damaged rotary ring or stationary ring of mechanical seal, or damaged oil seal 1.Improper assembling 2.Pump’s shaft and motor’s shaft are non-concentric 3. The suction pipe is too thin or too long, or

8.T 8.To o decrease vis cosity by heating 9. Clean pipe viscosity

too many elbows 4. with The suction pipe or filter is blocked 5.Gas-leaking 6.Too 6.T oo big resistance is with discharge pipe

4. Unclog pipe and filtering screen 5. Check and repair 6.Examine if the valve and pipe are  blocked 7.Tighen the fasteners 8. Check and replace 1.Turn down the pressure 2.Dismantle and clean it 1.Re-select pump

7.Fasteners are loosened 8.Damaged bearing and gear 1.Too 1.T oo high pressure is set 2.Trim is blocked 1.Discharge pressure surpasses the designated value 2.Rising viscosity of medium due to low temperature 3.Improper assembling 4.Rotating shaft is bended 5.Blocked in discharge pipe ７ 

10. Repair or replace 1. Readjust safety valve’s pressure or clean it 2.Check the suction pipe 3. Repair or replace Repair or replace 1.Overhaul 2. Readjust the alignment 3.Readjust

2.Heat the medium 3.Reassemble the pump 4.Straighten or replace shaft 5.Overhaul

 

Section X: How to Dismantle It is required to drain the medium liquid residual in pump chamber and the lube oil in gear box before replacing mechanical seal, framework oil sea or repairing pump, and then pump can be dismantled. Procedure to dismantle 2H&2W series pump is as below: 10-1. When leakage occurs at the front end of the pump, 1. Dispart the pump with motor and detach the coupling and plain key

2. Remove the bearing cap from front-casing cover; remove the round nuts and gaskets of driving and driven shafts; remove the nuts of pump body and front-cas front-casing ing cover. 3. Screw enough-length hex bolt into two holes at front-casing cover and pump out the front-casing cover. 4. Replace damaged mechanical seal and framework oil seal. 10-2. When leakage occurs at the back end of the pump, 1. Detach gear box, remove gears and spacers; remove nuts on pump and back-casing cover; get down  back-casing cover 2. Replace damaged mechanical seal, framework oil sea and bearing. 10-3.  Put enough 1# Calcium Base Grease or Lithium Base Grease on oil seal and in bearing chamber when reassembling. Notice to check if oil seal sea l lip is inside-out and if O-ri O-ring ng is cut after mounted. 10-4.  Clean out carefully pump chamber, screws and possible burrs and scratches at each joint, assemble the pump as it be with gaskets. It will be approved if the driving shaft rotates smoothly upon being turned by hand or wrench. 10-5.  Put enough clean lube oil into gear box and infuse i nfuse adequate medium liquid in to pump chamber. 10-6.  Connect pump with coupling. Bifid couplings should be in good alignment and pins should can be inserted the holes of bifid couplings succes successfully sfully.. After connection, turn the coupling by hand in 1 or 2 rounds and if found to rotate smoothly then the pump can be started.

Procedure to dismantle 2G series single-suction twin screw pump: disconnect pipes—loosen the nuts connecting pump body and bearing support—get down pump body for repair r epair Due to complicated construction multi-sealing faces, twin screw to pump if assembled improperly, even out and of order. Therefore, it is required be might care ofhave the oil-leakage procedure of disassembling and assembling, better still if finding accomplished technician to do the job.

Section XI: List of Wearing Parts ITEM Screws Cartridge of Safety Valve Valve Spring of Safety Valve Coupling Pin Mechanical Seal Oil Sea  

MATERIAL MATERIAL QT400-18、38CrMoAl 2Cr13、ZQAl9-4 45# Steel 2Cr13 60Si2MnA 3Cr13 rubber nylon TC--GRAPHITE NBR, FPM

QTY

REMARKS

4（2） 

As per order

1 1 8, 10 2-4 1-5

８ 

As per pressure

See Section XII See Section XII

 

Section XII: Table of Shaft Bearing & Seal Shaft Bearing

O-ring (GB3452.1)

Type

Mechanical Seal

Back

2G58

7004C

7004C

18×30×7

YM102-25

2G68

3205

NU205

22×38×7

U112-30

2G98

3207

NU207

30×50×7

U112-40

2G128

3208

NU208

35×56×12

U112-50

2G148

3309

NU309

U112-50

2G166

3311

NU311

50×70×8 50×70×8 65×90×10

2WM2

3205

NU304

2HE280

3305

2WM3

3206 3207

2HM560

2WM4

2HE800

 NU306

2WM5

10.6×2.65

32.5×2.65

3307 3208

32.5×2.65 21.2×2.65 73×3.55

2HE1400 3309 2HM1400

NU309

2WM6

42.5×2.65 21.2×2.65 92.5×3.55

2HE2500 3311 2HM2500

NU311

112×3.55 34.5×2.65

2WM7

2HE4200 3314 2HM4200

NU314

140×3.55 34.5×2.65

2WM8

2HE7000 7317B 2HM7000

2WM9

2HM9800

2WM10

2HM18000

2WM11

7318B

7322B

NU317

NU318

NU322

170×5.3

180×5.3

224×5.3 ９ 

U112-65

30×42×7

YM124-25 U112-30

-

U112-35

30×50×7 35×50×8

U112-30、35

-

YM102-40

35 40× ×56 62× ×12 8

U112-35、40

-

U112-45

40×62×8 45×62×8

U112-40、45

-

U112-50

50×70×8 55×75×8

U112-50、55

-

U112-50

50×70×8 65×90×10

U112-65

-

U112-65

65×90×10 80×110×10

U112-80

-

U112-80

80×110×10 95×120×12

YM124-95

85×110×12 105×130×12

M74N-105

12.5×2.65

65×3.55

3306

 NU307 2HM800

46.2×2.65

28×2.65  NU305 10.6×2.65 54.5×3.55

2HE560

 

Oil Sea GB13871

Front

2HM280

Pump

Safety Valve

105×130×12 125×150×12

M74N-125

 

Section XIII: Construction of Twin Screw Pump  A. 2H&2W series double-suction twin screw pump

B. 2G series single-suction twin screw pump

 

１０ 

 

Section XIV: Outline Dimension 1. 2G&2GM series single-suction twin screw pump (please find final dimensional drawing before construction)

TYPE YPE

MOT MOTOR

H

Y90 2G58

Y100

136

L

L1

L2

685

464

300 147

508

A

B

68

205

290

350

750

Y100

794

553

350

814

563

360

172

L4

188

102

929

641

420

248

1059

720

500

203

110

Y132

172

1033

675

450

158

123

250

305

300

550

161 161

115

Y180

248

1228

822

600

156

111

340

340

1150

803

600

252

102

260

260

1280

862

256

106 340

340

1345

905

277

127

288 2G128 1410

946

298

148

360

360

313

163

400

400

Y225

313

1480

977

Y250

338

1565

1072

700

336

186

450

450

Y200

316

1464

1142

800

223

171

390

390

2G148 1344

1000

234

172

460

2G166

Direction of in/outlet is inverse to that in the above structure chart  

 

125

n-m n-m 4-M1 2

１１ 

4-M1 6

4-M1

18

18

6

200

160

8-M1

Inlet：PN1.6、DN125 Outlet：PN1.6、DN100

Direction of in/outlet is inverse to that in the above structure chart 1935

165

300

650

386

110

20

780

Y250

150

20

340

1163

Y200

85

18

238

Y180

115

300

Y160

Y160

15

340

Y160

Y132

D1

250

300 2G98

D

290

2G68 Y132

d

225

730

Y112

Y112

L3 L3

460

Inlet：PN1.6、DN150 Outlet：PN1.6、DN125

6

 

2.  2HE&2HM series twin screw pump with side-inlet & side-outlet (please find final dimensional drawing before construction)

Model

Calefaction

Assembling Graph of pumps 

Motor L1

L2

Y 13 13 2

1 19 19 8

9 00 00

Y160

1328

1010

L L3 3

L4

L5

L6

3 70 70

 b1

b2

3 55 55

4 00 00

n-d

2HE280

dimension

p

Inlet and outlet

h1

h2

h3

R

DN

D1

D2

Z-D

495

305

135

G1/2"

80

200

160

8-18

589

390

165

G1/2"

100

235

190

8-22

175

G3/4"

12 125

270

220

8-27

G1"

150

300

250

8-27

G1"

200

360

310

12-27

G1"

250

425

370

12-30

G1"

300

460

410

12-24

G1"

400

480

515

16-26

  80

2HM280

0

1353

1010

Y132

1259

900

130

Y160

13 1389

1025

112

320

475

425 Y180

6-20

430 430

320

0

260

300

340

385

320

360

2HE560 2HM560 Y180

1454

1070

130

Y160

14 1487

1100

110

4-20

18 400

360

0 30 440

2HE800

Y180

1552

1135

130

2HM800

Y2 00 00

16 17 17

11 75 75

88

50 0

50

Y2 25 25

16 87 87

12 06 06

63

54 0

80

Y180

1660

1220

210

400

Y200

1725

1430

120

Y225

1795

1320

80

4-20

400

10 420 400

440

35

340

385

500

45

520

400

580

95

420

460

684

6-20

420

4-20

476 756

190

2HE1400 2HM1400

Y250

1 882

1390

94

400

80

450

500

460 6-20

480 816

250 525

Y280

1952

1510

80

450

95

Y 20 20 0

1 89 89 9

1 38 38 7

1 13 13

5 80 80

90

Y 22 22 5

1 96 96 9

1 44 44 6

1 43 43

5 80 80

60

500

550

8-25

826

490

260

535

450

881

220

6-20

2HE2500 Y 25 25 0

2 05 05 4

1 51 51 2

1 06 06

6 50 50

95

540

490

2HM2500

555 Y280

2174

1634

117

Y315

2346

1750

155

Y 25 25 0

2 23 23 8

1 65 65 0

700

80

520

560

45

625

670

5 20 20

5 60 60

545

590

931 480 5 00 00 75

2HE4200

8-25

270 580

160

Y280

2358

1770

 

515

Y315

2528

1880

160

520

75

625

670

Y280

2475

1885

72

580

200

545

590

8-25

650

8-25

780

1061

660

305

1115

700

325

1140

725

350

1305

825

345

1325

845

365

2HM4200

2HE7000

 

2HM7000

Y315

2675

1995

158

2HE9800

Y280

2556

2475

175

2HM9800

Y315

2834

2650

250

560

700

110 405

620

670

680

740

8-30

330

１２ 

800

 

3.  2WE&2WM(2HM/W) series double-suction twin screw pump with side-inlet & upside-outlet (please find final dimensional drawing before construction)

Outline Dimension Type

Oil/gas Hole

Motor L

L1

L2-L4

n-k

H

H1

Y112 1027

690

L2 500

260 230

4-12

474

240

2WM2 Y132 1122

757

L2 550

280 245

4-14

503

269

Y160 1265

895

L2 650

330 290

4-14

551

Y132 1187

817

L2 600

300 270

4-14

2WM3 Y160 1317

955

L2 600

330 290

Y180 1382

998

L2 700

360 320

893

L2 600

315 285

4-14

560

310

2WM4 Y160 1415 1017

L2 700

340 300

4-14

582

332

Y180 1480 1060

L2 700

360 320

4-14

602

352

Y132 1285

 

Size of In/outlet

A

B

D

E

F

j-d1(d2) m

g

20

-15

28

-24

317

28

-42

516

275

23

-13

4-14

566

325

33

-82

4-14

586

345

33

-54

21

-26

33

-38

38

-60

50

65

165 125

4-M16 (φ18)

185 145

R1

R2

G1/2

G1/4

G1/2

G1/4

G1/2

G1/4

8-M16 (φ18)

１３ 

80

200 160

 

Outline Dimension Type

Size of In/outlet

Motor L

L1

L2-L4

A

B

n-k

H

H1

D

E

F

j-d1(d2) m

g

28

0

33

25

Y160 1525 1092

L2 800

360 320

4-14

692

362

Y180 1590 1135

L3 450

380 340

6-14

692

362

Y200 1655 1176

L3 500

400 360

6-18

736

406

43

55

Y225 1725 1235

L3 500

440 400

6-18

761

431

43

25

Y180 1738 1244

L3 500

420 380

6-18

796

436

27

53

Y200 1803 1284

L3 500

440 400

6-18

796

436

37

33

2WM6 Y225 1848 1344

L3 550

460 420

6-18

821

461 150 300 250

47

53

Y250 1958 1409

L3 600

490 440

6-18

866

506

54

71

Y280 2078 1534

L3 650

550 500

6-18

900

540

54

58

Y200 1910 1379

L3 580

514 470

6-18

947

516

17

90

Y225 1955 1438

L3 580

524 480

6-18

947

516

22

60

2WM7 Y250 2065 1505

L3 650

550 500

6-18

967

536 200 360 310

12-M24 35 (φ27)

98

Y280 2185 1627

L3 700

580 530

6-18

1001 5 57 70

50

86

Y315 2385 1738

L4 500

640 590

8-24

1056 625

64

81

Y250 2230 1630

L3 700

610 560

6-18

1076 610

25

120

12-M27 37 (φ30) 40

109

2WM5

2WM8 Y280 2350 1752

L3 750

8-M20 100 235 190 (φ22)

640 590

6-18

1076 610 250 425

8-M24 (φ27)

Y315 2250 1863

L4 550

680 630

8-24

1111 645

60

129

Y280 2540 1884

L4 550

710 660

8-24

1265 740

25

153

2WM9 Y315 2740 2045

L4 600

750 690

8-24

1285 760 300 485 430

45

148

Y355 3190 2174

L4 650

810 750

8-24

1305 780

16-M27 75 (φ30)

158

Y315 2860 2167

L4 650

810 750

8-27

1486 850

27

222

Y355 3310 2296

L4 700

2WM10

400 580 525 870 810

8-27

1506 870

 

 

Oil/gas Hole

１４ 

57

232

R1

R2

G3/4

G1/2

G3/4

G1/2

G1

G1/2

G1

G1/2

G1

G1/2

G11/2

G3/4