CAST STEEL TRUNNION BALL VALVE

Product description The trunnion ball valve is used to cut off or connect the media in various of Class150~Class2500. Trunnion mounted cast steel ball valve is full port ( FP) or reduced bore (RB), t
Port size
NPS 2”~ 24”
Pressure
150Lb-600Lb
Structure
Trunnion mounted, Full or reduced bore
Medium
Water,steam,oil,gas
Temperature
-20~150ºC, -40~450ºC,
Body material
WCB CF8 CF3 CF8M CF3M or others
Connection
Flange
Feature
Different actuator is optional

Product description

The trunnion ball valve is used to cut off or connect the media in various of Class150~Class2500. Trunnion mounted cast steel ball valve is full port ( FP) or reduced bore (RB), two piece Split body or three piece bolted body, Trunnion mounted cast steel ball valve is trunnion Mounted type,blow-out proof stem, anti-staic, optional bocking device or stem extension, optional direct mounting to ISO 5211 structure,Trunnion mounted cast steel ball valve is a form of quarter-turn valve which uses a hollow or Solid, perforated and floating ball to control flow through it. Trunnion mounted cast steel ball valve is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the ball valve handle.

Technical Specification

» Nominal diameter: NPS 2~NPS 56

» Operating temperature: -46℃~121℃

» Operating pressure: CLASS 150~CLASS 2500

» Material: WCB、A105、LCB、LF2、CF8、F304、CF8M、F316, etc.

» Design standard: API 6D、ISO 17292

» Structural length: ASME B16.10

» Connecting end: ASME B16.5、ASME B16.25

» Test standard: API 598、API 6D

» Operation method: Handle, worm, motor-drive unit, pneumatic drive unit

» Application fields: Water, petroleum and natural gas

» Remarks 1: A locking device is provided to prevent misoperation of valve.

» Remarks 2: Valve stem flyout prevention structure design, to prevent accident due to flyout of valve stem caused by abnormal pressurization in the chamber

» Remarks 3: Fireproof and antistatic design

» Remarks 4: The valve stem and the valve seat are equipped with an injection system.

» Remarks 5: DBB (double block and bleed) function

» Remarks 6: Full bore of valve convenient for pigging, of small flow resistance and high flow capacity

Structural Features

1. Double Block And Bleed(DBB)

2. Low Operating Torque

3. Emergency Sealing Device

4. Fireproof Structure Design

5. Anti-static Structure

6. Reliable seat sealing structure

7. Single Sealing (automatic Pressure Relief In Middle Cavity Of Valve)

8. Double Sealing (double Piston)

9. Safety Relief Device

10. Secial Structure Of Automatic Pressure Relief Towards Upper Stream

11. Blow-out Proof Stem

12. Corrosion Resistance And Sulfide Stress Resistance

13. Extension Stem

Materials of main parts

No

Part Name

Carbon steel to ASTM

Stainless Steel to ASTM

WCB

LCB

CF8

CF8M

CF3

CF3M

1

Cover

WCB

LCB

CF8

CF8M

CF3

CF3M

2

Bolt

A193 B7

A320 L7

A193 B8

3

Trunnion

A182 F6

A182 F6

A182 F304

A182 F316

A182 F304L

A182 F316L

4

Body

A216 WCB

A352 LCB

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

5

Bonnet Nut

A194 2H

A194 4

A194 8

6

Bonnet Bolt

A193 B7

A320 L7

A193 B8

7

Cap

A216 WCB

A352 LCB

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

8

Gasket

SS Spiral Wound/graphite or SS Spiral Wound/PTFE

9

Shaft Sleeve

SS/graphite

10

Seat Ring

RPTFE or POM

11

Ball

A105/Ep.Cr or F6

A182 F6

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

12

Seat

A105/Ep.Cr or F6

A182 F6

A182 F304

A182 F316

A182 F304L

A182 F316L

13

Spring

17-17PH(inconel for NACE)Ni-cr Alloy

14

O-Ring

Viton

15

Stem

A182 F6

A182 F6

A182 F304

A182 F316

A182 F304L

A182 F316L

16

Sealing Cover

A182 F6

A182 F6

A182 F304

A182 F316

A182 F304L

A182 F316L

17

O-Ring

Viton

18

Gear Actuator

 

The material is according to ASTM standard

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