Three-piece, trunion mounted ball valve
Design features
- Tightness is achieved by pressing the seats against the ball
- Easy maintenance, repair and trim accessibility due to split body design.
- Lower torque values and greater reliability due to trunnion mounted ball design.
- Spring loaded seats ensuring zero leakage even with low line pressure.
- Guaranteed tightness provided by the dual sealing technology : primary - metal to metal, secondary – polymer to metal.
- Pressure relief system which is engaged when the line working pressure exceeds the specified threshold.
- Block and bleed system meant for venting pressure from body cavity (DBB in closed or open/closed position).
- Sealant injection port enabling to restore valve tightness in the seats and stem areas.
- Anti blow-out stem with antistatic design.
Parts and materials:
|
Number
|
Part
|
Standard
|
Stainless Steel
|
Sour Service
|
Low Temperature Service
|
|
1
|
Body
|
ASTM A105
|
ASTM A182-F316
|
ASTM A105
|
ASTM A350-LF2
|
|
2
|
Closure
|
ASTM A105
|
ASTM A182-F316
|
ASTM A105
|
ASTM A350-LF2
|
|
3
|
Ball
|
ASTM A105/ENP
|
ASTM A182-F316
|
ASTM A105/ENP
|
ASTM A350-LF2/ENP
|
|
4
|
Seat Insert
|
25% Glass-filled PTFE
|
25% Glass-filled PTFE
|
25% Glass-filled PTFE
|
25% Glass-filled PTFE
|
|
5
|
Seat Ring
|
ASTM A105/ENP
|
ASTM A182-F316
|
ASTM A105/ENP
|
ASTM A350-LF2/ENP
|
|
6
|
Stem
|
ASTM A105/ENP
|
ASTM A182-F316
|
ASTM A105/ENP
|
ASTM A350-LF2/ENP
|
|
7
|
Shim
|
ASTM A182-F316
|
ASTM A182-F316
|
ASTM A182-F316
|
ASTM A182-F316
|
|
8
|
Trunnion Support
|
ASTM A216-WCB/ENP
|
ASTM A351-CF8M
|
ASTM A216-WCB/ENP
|
ASTM A352-LCB/ENP
|
|
9
|
Packing ring
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
|
10
|
Body Gasket
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
|
11
|
Spacer
|
PTFE
|
PTFE
|
PTFE
|
PTFE
|
|
12
|
Gasket
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
|
13
|
Firesafe Gasket
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
316SS + Graphite
|
|
14
|
Gland Cap
|
ASTM A105
|
ASTM A182-F316
|
ASTM A105
|
ASTM A350-LF2
|
|
15
|
Top Flange
|
ASTM A105
|
ASTM A182-F316
|
ASTM A105
|
ASTM A350-LF2
|
|
16
|
Thrust Washer
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
|
17
|
Bearing
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
316 + PTFE + MoS2
|
|
18
|
Seat Follower
|
ASTM A105/ENP
|
ASTM A182-F316
|
ASTM A105/ENP
|
ASTM A350-LF2/ENP
|
|
19
|
Vent Valve
|
Assembly
|
Assembly
|
Assembly
|
Assembly
|
|
20
|
Drain
|
S.S.
|
S.S.
|
S.S.
|
S.S.
|
|
21
|
Seat Spring
|
Inconel X-750
|
Inconel X-750
|
Inconel X-750
|
Inconel X-750
|
|
22
|
O-ring
|
NBR
|
NBR
|
NBR
|
NBR
|
|
23
|
Body Stud
|
ASTM A193-B7
|
ASTM A193-B8
|
ASTM A193-B7M
|
ASTM A320-L7M
|
|
24
|
Body Nut
|
ASTM A194-2H
|
ASTM A194-8
|
ASTM A194-2HM
|
ASTM A194-7M
|
|
25
|
Gland Pin
|
Carbon Steel
|
S.S.
|
Carbon Steel
|
Carbon Steel
|
|
26
|
Key
|
Carbon Steel
|
S.S.
|
Carbon Steel
|
ASTM A182-F304
|
|
