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Forged Valves

Check Valves

Check Valves

Diantai's proven pressure seal design.
Quick and easy repair in the line.
Integral seat CoCr alloy....

Features and benefits

● Diantai's proven pressure seal design.
● Quick and easy repair in the line.
● Integral seat CoCr alloy.
● Disc-piston fully guided with CoCr alloy seating and guiding surfaces. The light disc-piston ensures maximum lift and low pressure drop.
● Tight shutoff.
● Other sizes available on request. 

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● Size range(s)

  NPS 1/4 - 2 (DN 8 - 50)

● Pressure rating

● ASME Classes
   150 - 1500

● Standard connections

● Threaded, Socket weld, Flanged


Features and benefits

● Available types: Piston, Ball, Swing check 

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Flanged End Check Valve 150Lb~600Lb        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

Nameplate

SS

3

Piston Disc

A276 420

A276 304

A276 304(L)

A276 316(L)

4

Bonnet

A105

A182 F22

A182 F304(L)

A182 F316(L)

5

Gasket

Corrugated SS + graphite

SS + PTFE

6

Bolt

A193 B7

A193 B16

A193 B8

A193 B8(M)

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(RF)L1(BW)

150

108

117

127

140

165

203

300

152

178

203

216

229

267

600

165

190

216

229

241

292

H

150,300

61

61

79

95

103

118

600

61

79

95

103

118

135

Weights

150

RF

2.56

3.37

4.37

8.17

8.94

12.64

BW

1.70

1.90

2.10

5.12

5.50

7.89

300

RF

2.73

3.65

4.74

8.77

9.60

13.70

BW

1.90

2.10

3.00

5.12

6.60

7.85

600

RF

3.00

4.00

5.83

9.47

10.10

15.6

BW

2.00

3.12

4.25

7.25

8.56

13.60

 

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