• Pressure Seal Gate Valve
  • Pressure Seal Gate Valve

Pressure Seal Gate Valve

Material of pressure seal gate valve:  WCB,LCB,WC6,WC9,CF8,CF8M.CF3.CF3M,CN7M,904L

Size of pressure seal gate valve:  2inch(DN50) - 20 inch (DN500)

Pressure of pressure seal gate valve:  900LB(PN150)-2500LB(PN420)

Connection type:  Flange(RF,RTJ) BW,SW.

Kind of drive :  Wrench,Gear,Electric actuators and pneumatic actuators

Operating temperature :  -100℃ - 400℃

Working medium :  water, gas,oil,Sulfuric acid and hydrochloric acid

Catalogue:

Cast steel gate,globe,check valves.pdf


Brief introduction for the Pressure seal gate valve.


The open-close part name is gate,that  this cast steel gate valve only can fully open or fully closed, they can not adjust the flow,the gate have two sealing face and the sealing face are wedge type,the gate also have two type according to interior structure,one is solid gate ,anther is flexible gate, the advantage of flexible gate is that it will not be stuck when being fastened between gate and seat. te maket of the flexible gate valve is bigger than other gate valves.

The difference between pressure seal gate valve and others cast steel gate valve depending on pressure from medium to finished the sealing of the valve stem .thus eliminate the medium leakage out .so they usually used on important place.


The kind of this Pressure seal gate valve.

We can divided into two types according to structure of the gate, one type is wedge gate valve, anther type is flat gate valve,wedge gate valve is mean the sealing face of the gate is wedge type(it have angle between them),flat gate valve is mean the sealing face of the gate is parallel type,wedge gate valve must rely on exogenic action to  mechanical seal,but flat gate valve can rely on  pressure of the medium to seal. so teh wedge gate valve have the bigger market than flat gate valve.


Advantage for the pressure seal gate valve

All of the gate valve are full bore,so they have the very small fluid resistance and the sealing face is very resistant to shock and wear.

The flow of medium is not restricted when valves are installed in the pipeline.they have simple structure and have the short face to face.so the price is lower than ball valve.

The pressure seal gate valve usually used for the highest piping line,their characteristic are higher pressure can be

make a better sealing effect,so no any medium can  leakage out from pressure seal gate valve on any time.


Matters needing attention during installation

The workers must clean up the impurities in the piping and valves before the gate valve installed on the piping line.


Forged steel pressure seal gate valve


Pressure Seal Gate Valve

Features:

Presure-seal Gate Valve 900Lb-2500Lb


Standard Material Specifications

NO.
Part Name
CS to ASTM
AS to ASTM
SS to ASTM
Type A105

Type F22

Type F304(L)
Type F316(L)
1
Body
A105
A182 F22
A182 F304(L)
A182 F316(L)
2
Seat
A276 420
A276 304
A276 304(L)
A276 316(L)
3
Wedge
A276 430&410
A182 F304
A182 F304(L)
A182 F316(L)
4
Stem
A182 F6
A182 F304
A182 F304(L)
A182 F316(L)
5
Pressure Seat
A105
A182 F304
A182 F304(L)
F316(L)
6
Pressure Ring
A276 304L
A276 316L
7
Bonnet
A105
A182 F22
A182 F304(L)
A182 F316(L)
8
Gland Eyebold
A193 B7
A193 B16
A193 B8(M)
9
Pin
A276 420
A182 F304(L)
10
Stem Packing
Flexible Graphite
PTFE
11
P.S.Lock Nut
A194 2H
A194 4
A194 8
A194 8M
12
Gland
A276 F420
A182 F304
13
Gland Flange
A216 WCB
A351 CF8
14
Nut
A194 2H
A194 4
A194 8
A194 8M
15
Yoke Nut
A276-410
16
Retaining Nut
A194 2H
A194 4
A194 8
A194 8M
17
Handwheel
A197
18
H.W.Lock Nut
A194 2H
A194 4
A194 8
A194 8M
19
Oil Cup
Brass
Suitable Medium
W.O.G.etc
W.O.G.etc
HNO3,CH3OOH etc
Suitable Temperature
-29~425
-29~550
-29~180

Note: Other materials are available upon request.


Dimensions (mm) and Weights (Kg)

NPS
1/2"
3/4"
1"
1-1/4"
1-1/2"
2"
L
900~1500Lb
140
140
140
178
178
216
2500Lb
186
186
186
232
232
279
H(OPEN)
321
321
321
380
414
502
W
160
160
180
200
250
280
Weights
900Lb~1500Lb
11.5
10.8
10.5
19.6
21.0
55.4
2500Lb
12.3
11.6
10.8
26.0
28.4
60.0

PRESSURE SEAL GATE VALVE BRIEFING INTRODUCTION:

drawing for gate valve

FEATURES
Size: 2"~40"
Class: 900~2500Lb
OS & Y, Rising Stem
Pressure Seal Bonnet
Choice Of Solid Or Split Wedge
Forged T-head Stem
Available With Gear Operated
SPECIFICATIONS
Design ASME B16.34/API 600
Face to Face ASME B16.10
End Flange ASME B16.5
BW End ASME B16.25
Test API 598
Special NACE MR-01-75
Application WaterOilGas

MAIN PARTS AND MATERIALS
No.
Parts Name Material
1
Body A216 WCB
2
Seat A105+STL
3
Wedge A216 WCB+ STL
4
Stem A182 F6+ Nitriding
5
Movable Cover A105
6
O-ring SS304+Graphite
7
Gasket A105
8
Adapter Ring A276 420
9
Gland Flange A216 WCB
10
Bonnet A216 WCB
11
Bolt A193 B7
12
Nut A194 2H
13
Bevel Gear Ductile Iron
14
Gland A276 420
15
Bolt A193 B7
16
Nut A194 2H
17
Cap A276 420
18

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