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Metal Seal Ball Valve

Metal Seat Trunnion-mounted Ball Valve

Metal Seat Trunnion-mounted Ball Valve

Metal Seat Trunnion Ball Valve
High Temperature Service
General soft seat ball valve working temperatureis limited uo to 400° F, but metal-seat ball valves are guaranteed for a maximum service temperature of 800° F.
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Metal Seat Trunnion Ball Valve  


High Temperature Service
General soft seat ball valve working temperatureis limited uo to 400° F, but metal-seat ball valves are guaranteed for a maximum service temperature of 800° F.

Low Pressure Reliable Sealing
NIPO metal-seat ball valves adopt seat spring structure, which can push upstream seat tightly against the ball surface creating a reliable sealing even if extremely low pressure

Pressure Test
Metal-seat ball valves maximum allowable seat
Leakage:
Air: ANSI/FC 170-2 CLASS V

Absolute Fire Safe Guarantee
Metal-to-metal contact is designed between ball and seat, where is unconditional fire safe function. Flexible graphite gasket can prevent fluid leakage from between body & seat or body & bonnet even if high temperature environments to reach fire-safe purpose. In addition, other sealing components such as stem packing can also reach fire-safe function and prevent external leakage. So all parts of valve will not be damaged by high temperature service.

Blow-out Proof Stem & Anti-Static Device
As general ball valves, metal-seated ball valves are provided with blow-out proof stem &anti-static device.

No.

Part

Material

1

Body 

A216-WCB  A352-LCB  A351-CF8,CF8M,CF3,CF3M  Duplex

2

Seat

ASTM A182-F6+STL,F304+STL,F316+STL,F316L+STL

3

Antistatic Spring

Stainless Steel SS316

4

Thrust Washer

PTFE  PPL 

5

Screw

ASTM A193-B7,B8

6

Limited Plate

1015+Cr  Carbon Steel+Cr

7

Lever

A216-WCB  

8

Gland Flange

A216-WCB  A351-CF8

9

Packing

Graphite  PTFE

10

Stem

A182-F6,F304,F316,F316L,F304L,17-4PH,F51

11

Body Gasket

Stainless Steel+PTFE  SS316+PTFE

12

Ball 

ASTM A182-F6+N,F304+N,F316+N,F304L+N,F51+N

13

Seat Gasket

ASTM A182-F6,F304,F316,F316L

14

Bonnet

A216-WCB A352-LCB A351-CF8,CF8M,CF3,CF3M

15

Seat Spring

Inconel X-7505  SS304  SS316

16

Seat Sealing

Graphite

17

Stud 

ASTM 193-B7,B7M,B8,B8M

18

Nut

ASTM 194-2H,2HM,8,8M

 


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