Duplex stainless cast steel ball valve
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Duplex stainless cast steel ball valve

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Our duplex stainless cast steel ball valve is bolted cover, two-piece or three-piece body, trunnion ball design, Size 2" to 56", pressure 150Lb to 2500Lb.

Features:
1.Forged ball
2.Anti-fire safe design
3.Anti-static device
4.Free leakage of body Sealed construction
5.Low torque in operation
6.Double block&bleed(DBB)
7.Emergency sealing
8.Extension stem at your choice
9.Automatic body cavity relief
10.Various driving types: gear, lever, electric, hydraulic, pneumatic

Standards Compliance
Design and manufacture: ANSI B16.34, API 608, API 6D, BS5351
Face to face dimensions: ANSI B16.10, API 6D
Flanged connection: ANSI B16.5, ANSI B16.47
Butt welded: ANSI B16.25
Fie-safe: API 607, API 6FA
Test and inspection: API 598, API6D

Standard Material Specifications
Body: ASTM A216 WCB,A351 CF8, A351 CF8M, A351 CF3,A351 CF3M,A351 CN7M, 1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
Cap: ASTM A216 WCB,A351 CF8, A351 CF8M, A351 CF3,A351 CF3M,A351 CN7M, , 1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
Ball: A105, A182 F304, A182 F316, A182 F304L, A182 F316L, A182 F6a, A350 LF2, 1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
Stem: A105, A182 F304 A182 F316 A182 F304L A182 F316L, A182 F6a, A350 LF2, 1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
Seat: A105, A182 F304, A182 F316, A182 F304L, A182 F316L, A182 F6a, A350 LF2, 1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
Seat ring: PTFE/RPTFE/NYLON/PEEK
Fixed trunnion: A105, A182 F304, A182 F316, A182 F304L, A182 F316L,1A(CD4MCu) 2A(CE8MN) 3A(CD6MN) 4A(CD3MN) 5A(CE3MN)
O-ring: VITON, PTFE, NBR
Seat spring: 17-7PH/Inconel/304/316
Cover bolt: A193 B7, A193 B8, A193 B8M, A320 L7
Cover nut: A194 2H, A194 8, A194 8M, A194-4
Bearing: SF-1, 304SS/PTFE

Performance Specification For Ball Valve

Technical Specification

PN(Mpa)

ANSI Class (Lbs)

1.6

2.5

4.0

6.4

10.0

150

300

400

600

900

1500

2500

Test Pressure

(MPA)

Shell Test

2.4

3.75

6.0

9.6

15.0

2.94

7.67

10.2

15.3

22.98

38.3

63.83

Seal Test

1.76

2.75

4.4

7.04

11.0

2.16

5.62

7.48

11.23

16.85

28.08

46.81

Air Test

0.55+/-0.07

Applicable temperature: -196 C degree to 550 C degree
Note: please choose different materials for different working conditions.
Application:
Common type: water, steam, oil, liquid gas, natural gas etc
Anti-sulphur type: gas oil etc which contains h2s, co composition.

We also have special treatment to ball, seat, stem for metal to metal application, such as hardface 13Cr overlay welded, stellite 6 welded, TSC, Ni60 coating, nitrided treatment and so on.



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