VALVES _PRESENTATION.ppt

FLUID VALVES

STANDARDS INSTITUTE ANSI – American National Standards Institute  – American Petroleum Institute API ASME – American Society of Mechanical Engineers AWWA – American Water Works Association MSS-SP – Manufacturers Standardization Society of the Valves and Fittings Industry BSI – British Standards Institute

STANDARDS CODE API 600

Steel Valves - Flanged & Buttwelding Ends

API 602

Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended-Body Ends

API 603

Class 150, Cast, Corrosion-Resistant, Flanged-End Gate Valves

API 608

Metal Ball Valves-Flanged and Butt-Welding Ends

API 609

Butterfly Valves, Lug-Type and Wafer Type

API 598

Valve Inspection & Testing

API 6D

Specification for Pipeline Valves (Gate, Plug, Ball and Check Valves)

ANSI B16.34

Steel Valves - Flanged & Buttwelding Ends

ANSI B16.10

Face-to-Face Dimensions of Ferrous Valves

MSS SP-55

Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components

BS 1873

"Steel Globe Stop and Check Valves For The Petroleum, Petrochemical and Allied Industries

BS 5352

Steel Wedge Gate, Globe and Check Valves 50mm (2") and Smaller For The Petroleum, Petrochemical an Allied Industries.

BS 5160 Specification for steel globe valves, globe stop and check valves and lift type check valves

OBJECTIVES 

     

Type of valves and strainers,steam traps introduction in Piping network. Valve Selection cratia, Moc / Standards Function of various industrial valve How to control the flow of fluids/head Loss Operational ,Size limitations How to prepare to valve specification Type of hydraulic valves, hose fittings

FLUID VALVES 

Def’n: devices which control the amount and direction of fluid flow in piping systems 



Typically made of bronze, brass, iron, or steel alloy, plastic.

Components: - Valve body - Disc - Seat - Bonnet

- Packing - Packing gland/nut - Stem - Wheel

Valve Selection (6-Q) 

    

What is the valve size? What is the Media in Pipe line? What is the Temperature ? What is the Pressure? What is the Material ? What is the end connection?

Valve Sizes/Application Valve Types Gate ( From 6 NB)

Purpose Isolation

Globe ( From 6 NB)

Example of a system Pump suction,pipe line steam, air, oil and water

Isolation / Throttling Ball ( from 15 NB)

Isolation / Throttling

Seawater, sanitary, trim and drain, air, hydraulic, and oil transfer

Butterfly ( From 50 NB)

Throttling

freshwater, saltwater, lube oil, and chill water

Check ( L.C 6 NB) Swing Ch. V/V- 50 NB(FE)

Allows fluid to flow in one direction; prevents backflow and damage to equipment Protects a system from overpressure

Any

Relief

High pressure system

Media Water is the easy media can be handled any valves .  Air is a very simple media.  Suspended solid,mixer of air & oil .  Hp. Steam for process.  Acidic ,brine,clay application. 

Temperatute/ Material  

  

   

Temp -50°C to Below 200°C use soft seated valve (Class VI) Cast iron valves to be use - 10°C to 210°C Carbon steel - 20°C to 425°C Alloy steel - 20°C to 600°C SS Casting : -220°C to 815°C Bronze :160°C to 280°C Inconel : 160°C to 650°C Monel : 160°C to 480°C PVC : 100 °C to 125°C

Pressure  

 



Pressure is always connected with Temperature The material which can handle 16 bar Pr.in 20°C Might not do that in 200°C. Piping flange class is same of valve class. Ex. #150 , #300 or PN10 . PN20, Marked on V/V body as PN 10 men's at 20°C

End Connections 

   

Flanges end. (faces- flate,raised , Groove) Welded end.( Rating #600 ) Threaded end. ( BSP / NPT #2000 lbs ) Socket welded End (#3000 lbs) Brazing / Soldering Ends. ( #150,#300)

Forged Valve

Valve Material for non corrosives application

cont..

Material

ASTM

Service Condition

Trim low Trim high Temp Temp

Carbon steel

A216 Gr WPB

Non corrosive water, oil and gas Temp -30°C to 430 °C

1 or 8

8 or 5

CS Low Temp Services

A352 Gr LCB A352 Gr LC2 A352 Gr LC3

Cryogenic services low Temp. Temp -46°C to 343°C Temp -73°C to 343°C Temp -101°C to 343 °C

2 or 12

12 or 5

Alloy Steel

A217 Gr WC1

Non corrosive water, Oil and Gas Temp -20°F to 875°F

2 or 12

12 or 5

11/4Cr-1/2 Mo

A217 Gr WC6

Non corrosive water, Oil and Gas Temp -20°C to 649°C

8 or 5

5

21/4Cr-1 Mo

A217 Gr WC9

Non corrosive water, Oil and Gas Temp -20°C to 649 °C

8 or 5

5

5%Cr-1/2 Mo

A217 Gr C5

Corrosive water, Oil and Gas Temp -20°C to 649 °C

8 or 5

5

9%Cr-1 Mo

A217 Gr C12

Corrosive water, Oil and Gas Temp -20°C to 649 °C

8 or 5

5

Valve Material for corrosives application Cast Stainless Steel

Corrosive high Temp Applications

18% Cr-8% Ni

A351 Gr CF8

Temp -10°C to 816°C

10 or 12

5

18% Cr-8% Ni(L.Carbon)

A351 Gr CF5

Temp -10°C to 427°C

10 or 12

5

16%Cr-12%Ni2%Mo

A351 Gr CF8M

Temp -254°C to 649°C

10 or 12

5

16%Cr-12%Ni2%Mo (L.Carbon)

A351 Gr CF3M

Temp -10°C to 454°C

10 or 12

5

18% Cr-8% Ni-cb

A351 Gr CF8C

Temp -10°C to 816°C

10 or 12

5

Alloy 20

A351 Gr CN7M

Corrosive Viz hydrogen sulphide dry

13

13 or 14

Monel

A94 M35-1

Hydrochloric acid (Air free) all concentrated

13

9

Hastelloy B

A94 N12MV

Hydro choleric acid