Forged steel gate valve

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Forged steel A105 flange gate valve Z41H

Date:[2017-03-15]    hits: Forged steel A105 flange gate valve Z41H

A105 forged steel flange gate valve Z41H

Forged steel gate valve belongs to a valve forging, valve opening and closing parts is ram, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle. According to the sealing surface configuration can be divided into wedge gate valve and parallel gate valve, most of the valve is sealed by force, that the valve is closed, to rely on external pressure to force the gate to the seat to ensure the sealing surface of the seal.

A summary:

Forged steel gate valve is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle. Gate has two sealing surfaces, the most commonly used mode gate valve of the two sealing surface to form a wedge, wedge angle varies with the valve parameters, usually 50 degrees, the temperature is not high when the media is at a temperature of 52 degrees 52'. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce micro deformation of ram, in order to improve its process of deviation, make up the sealing surface angle in the process, the gate is called the flexible gate.

Two. Classification:

The type of gate valve, sealing surface configuration can be divided into wedge gate valve and parallel gate valve, wedge gate type valve can be divided into: single gate type, dual gate plate and the flexible gate type; parallel gate type valve can be divided into single and dual gate gate plate. According to the thread position of the valve stem can be divided into two kinds of rod and gate valve.

Three. Working principle:

When the valve is closed, the sealing surface can only rely on media pressure to seal, that is, to rely on the pressure of the media to the sealing surface of the gate pressure to the other side of the valve seat to ensure the sealing surface of the seal, which is self sealing. Most of the gate valve is the use of forced seal, that is, when the valve is closed, to rely on external forces forced the gate pressure to the valve seat to ensure the sealing surface sealing. Gate valve with the valve stem with a straight line movement, called the lift rod gate valve (also known as the rod valve). Usually in the lift rod with trapezoidal thread, through the top of the nut and the valve body of the guide groove, the rotary motion into linear motion, that is, the operating torque into operation thrust. When the valve is opened, when the height of the ram is equal to 1:1 times of the valve diameter, the fluid channel is completely open, but this position is not monitored during operation. In actual use, the stem apex as a sign, that is not open position, as its fully open position. Temperature changes appear to consider locking phenomenon, usually open to the vertex position, and then rewind 1/2 1 circle, as a fully open valve position. Therefore, the valve fully open position, according to the location of the gate (ie travel) to determine. Some gate valve, stem nut is located in the gate, hand wheel rotation to drive the stem rotation, so that the gate lift, this valve is called the rotating rod or gate valve called dark rod.

阀体

WCB

WC1

WC6

WC9

ZGCr5Mo

CF8

CF8M ZGCr18Ni9Ti

CF3

CF3M

阀盖

WCB

12Cr1MoV WC1

12Cr1MoV WC6

12Cr1MoV WC9

12Cr1MoV ZGCr5Mo

304 CF8

316 CF8M

CF3

CF3M

支架

WCB

WCB

WCB

WCB

WCB

CF8

CF8M

CF3

CF3M

闸板

WCB

WC1

WC6

WC9

ZGCr5Mo

CF8

CF8M

CF3

CF3M

阀杆

2Cr13

25Cr2MoV

阀座

25

304

304

304

304

304

304

304

304

密封环

包覆垫、增强柔性石墨

填料

增强柔性石墨

阀杆螺母

ZCuA110Fe3


Flange standards comply with API 602, MSS-SP-118 (standard) and ANSI B16.34, B35352.

Inspection and testing by API598, mark by MSS-Sp-25.

The following structure

Full diameter or diameter reduction

Structure length by ANSI B16.10

Flange size by ANSI B16.5

Pressure self tightening valve cover

Strut type (OS&Y)

Self centering press sleeve type

Integral seal seat

Integral valve flange

The welding end conforms to ASME B16.25

RTJ body valve cover connection form

Bolt connection, wound gasket seal valve cover, threaded connection, all welded seal valve cover and screw connection internal pressure self tight seal valve cover

Forged steel flanged end gate valve


150Lb-600Lb standard material list

序号

零件名称

CS to ASTM

AS to ASTM

SS to ASTM

Type A105N

Type F22

Type F304(L)

Type F316(L)

1

阀体

A105N

A182 F22

A182 F304(L)

A182 F316(L)

2

阀座

A276 420

A276 304

A276 304(L)

A276 316(L)

3

闸板

A182 F430

A182 F304

A182 F304(L)

A182 F316(L)

4

阀杆

A182 F6a

A182 F304

A182 F304(L)

A182 F316(L)

5

垫片

316夹柔性石墨

316夹PTFE

6

阀盖

A105

A182 F22

A182 F304(L)

A182 F316(L)

7

阀盖螺栓

A193 B7

A193 B16

A193 B8

A193 B8M

8

圆柱销

A276 420

A276 304

9

填料压套

A276 410

A182 F304(L)

A182 F316(L)

10

活节螺栓

A193 B7

A193 B16

A193 B8

A193 B8M

11

填料压板

A105

A182 F304

12

螺母

A194 2H

A194 4

A194 8

A194 8M

13

阀杆螺母

A276 420

14

锁紧螺母

A194 2H

A194 4

A194 8

A194 8M

15

铭牌

SS

16

手轮

A197

17

润滑垫片

A273 431

18

填料

柔性石墨

PTFE

适用介质

水、蒸汽、油品等

水、蒸气、油品等

硝酸、醋酸等

适用温度

-29°C~425°C

-29°C~550°C

-29°C~200°C


Note: other materials for customer requirements can also be used. Matching of sealing surface material is determined by the customer specified internal code.

CS= carbon steel; AS= alloy steel; SS= stainless steel;

Dimensions (mm) and weight (Kg)


NPS

1/2

3/4

1

11/4

11/2

2

L(RF)
L1(BW)

150Lb

108

117

127

140

165

203

300Lb

145

152

165

178

190

216

600Lb

165

190

216

229

241

292

H(开)

150,300Lb

158

169

197

236

246

283

600Lb

169

197

236

246

283

320

W

100

100

125

160

160

180

重量

150

RTJ

4.5

5.2

8.2

11.5

12.5

20.3

BW

2.8

3.3

5.4

7.1

8.2

12.5

300

RTJ

4.8

6.2

9.3

14

15.5

23.4

BW

3.5

4.4

6.8

8.1

9.2

15.4

600

RTJ

5.9

7.4

10.4

16.2

17.5

18.3

BW

4.5

5.1

8.2

10.5

12.4

20.1


Forged steel flange gate valve 900Lb-1500Lb standard material list 

序号

零件名称

CS to ASTM

AS to ASTM

SS to ASTM

Type A105N

Type F22

Type F304(L)

Type F316(L)

1

阀体

A105N

A182 F22

A182 F304(L)

A182 F316(L)

2

阀座

A276 420

A276 304

A276 304(L)

A276 316(L)

3

闸板

A182 F430

A182 F304

A182 F304(L)

A182 F316(L)

4

阀杆

A182 F6a

A182 F304

A182 F304(L)

A182 F316(L)

5

垫片

316夹柔性石墨

316夹PTFE

6

阀盖

A105

A182 F22

A182 F304(L)

A182 F316(L)

7

阀盖螺栓

A193 B7

A193 B16

A193 B8

A193 B8M

8

圆柱销

A276 420

A276 304

9

填料压套

A276 410

A182 F304(L)

A182 F316(L)

10

活节螺栓

A193 B7

A193 B16

A193 B8

A193 B8M

11

填料压板

A105

A182 F304

12

螺母

A194 2H

A194 4

A194 8

A194 8M

13

阀杆螺母

A276 420

14

锁紧螺母

A194 2H

A194 4

A194 8

A194 8M

15

铭牌

SS

16

手轮

A197

17

润滑垫片

A273 431

18

填料

柔性石墨

PTFE

适用介质

水、蒸汽、油品等

水、蒸气、油品等

硝酸、醋酸等

适用温度

-29°C~425°C

-29°C~550°C

-29°C~200°C


Note: other materials for customer requirements can also be used. Matching of sealing surface material is determined by the customer specified internal code.

CS= carbon steel; AS= alloy steel; SS= stainless steel;

Dimensions (mm) and weight (Kg)


NPS

1/2

3/4

1

11/4

11/2

2

L(RTJ)

900-1500Lb

216

229

254

279

305

371

L1(BW)

900-1500Lb

216

229

254

279

305

368

H(开)

197

197

236

246

283

330

W

125

125

160

160

180

200

重量

RTJ

7.2

11.5

15.6

16.2

22.6

32.8

BW

5.2

9.3

12.4

13.8

18.9

27.5


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