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Pressure Reducing Valve

Pressure Reducing Valve
Pressure Reducing Valve
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Product Code : 42
Product Description

Pressure Reducing Valve

CONFIRM TO HIGH QUALITY & LONG LIFE

DESCRIPTION

WJ' CAST STEEL PILOT CONTROLLED METALLIC DIAPHRAGM TYPE PRESSURE REDUCING VALVE with Flanged Ends to BS-10 Table 'J' are suitable for 350 psig (24.6kg/Cm2) Max. Working Pressure at 425°C Temp. (800°F) and are Tested to 700 psig (49.2Kg/Cm2) Hyd. Pressure. These Valves are available in three reduced pressure ranges of 5/60, 20/80 and 40/125 on the down stream side.

INSTRUCTIONS FOR INSTALLATION

  • The Valves should be installed in a horizontal pipe line.
  • Stop valves should be installed at inlet & outlet sides of reducing valve.
  • A safety valve should be installed on the down stream side of reducing valve.
  • A steam trap & a strainer should be installed on the upstream side just before the reducing valve.
  • Clean all scale and jointing material from the pipe line before installing the reducing valve.

TESTING AND CERTIFICATION
All Reducing Valves are Tested at Double the Max. Working Pressure. Each valve is supplied with IBR Test certificate in Form III-C issued by The Director of Boilers, Punjab.

Technical Specifications

DIMENSIONS

Nominal Size

A

B

C

D

E

25mm (1'')

181

120.7

19.05

135

220

40mm (1 1/2'')

225

140.0

22.2

187

338

50mm (2'')

260

165.1

25.4

168

320

65mm (2 1/2'')

292

184.5

25.4

180

360

80mm (3'')

325

203.2

31.8

212

384


MATERIALS

Name of Part

Material

Specifications

Body

C.S.

IBR 73 to 80

Bonnet

C.S.

IBR 73 to 80

Spring Chamber

C.I.

IBR-86 to 93 Gr. A

Locking Guard

C.I.

IBR-86 to 93 Gr. A

Diaphragm Chamber

C.S.

IBR 73 to 80

Bottom Diaphragm Chamber Cover

C.S.

IBR 73 to 80

Studs with Nuts

M.S.

----

Studs with Nuts

M.S.

----

Bolts with Nuts

M.S.

----

Gasket

C.A.F.

IS - 2712

Gasket

C.A.F.

IS - 2712

Lower Diaphragm

S.S.

AISI-304

Upper Diaphragm

S.S.

AISI-304

Lower Spring Disc

S.S.

AISI-410

Upper Spring Disc

S.S.

AISI-410

Spring

Carbon Steel

IBR-307-314

Diaphragm Disc

Bronze

IBR-282 (a) IV Gr. B

Locking Nut

M.S.

----

Extension Stem

S.S.

AISI - 410

Guide Sleeve

Bronze

IBR-282 (a) IV Gr. B

Seat Ring Guide

Bronze

IBR-282 (a) IV Gr. B

Body Seat Ring

S.S.

AISI-410

Valve Disc

S.S.

AISI-410

Disc Spring

S.S.

AISI-302

Pilot Nut

Extruded Brass Rod

----

Pilot Spring

S.S.

AISI-302

Pilot Ball

S.S.

AISI-304

Pilot Body

S.S.

AISI-410

Pilot Stem

S.S.

AISI-410

Bush

S.S.

AISI-410

Pilot Stem Cap

Bronze

IBR-282 (a) IV Gr. B

Nipple

S.S.

AISI-410

Spring Adjusting Screw

M.S.

----

Pin

M.S.

----

Locking Lever

M.S.

----

Side Plug with Copper Washer

Bronze

IBR-282 (a) IV Gr. B

Pipe Assembly

Copper

IBR-282 (a) IV Gr. B


CAPACITIES OF 'WJ' PRESSURE REDUCING VALVES FOR STEAM IN Kg. PER HOUR

SET PRESSURE Kg./Cm2g

OUTLET PRESSURE Kg./Cm2g

VALVE SIZE

25 mm (1'')

40 mm (1 1/2'')

50 mm (2'')

65 mm (2 1/2'')

80 mm (3'')

2

0.75

190

520

920

1360

2000

4

1.5

300

820

1470

2150

3100

2.75

275

740

1290

1950

2800

6

2.0

385

1020

1850

2720

3900

3.5

350

920

1650

2420

3530

7

3.5

490

1275

2275

3365

500

4

475

1230

2190

3280

4790

6

375

980

1750

2560

3740

9

4

600

1590

2820

4140

6140

6

555

1485

2620

3840

5650

7

465

1230

2180

3180

4770

10

5

710

1800

3250

4950

7000

7

650

1720

3035

4520

6550

9

500

1300

2550

3450

4950

13

6

850

2210

3900

5720

8230

7

810

2180

3760

5720

8000

9

715

1920

3400

5050

7230

10

550

1465

2610

3840

5480

15

7

920

2380

4340

6380

9565

9

880

2280

4100

5920

8650

10

800

2140

3730

5460

7960

17.58

8

1130

3050

5360

7730

11370

10

1100

2910

5230

7500

11140

CAST STEEL SINGLE POST FULL LIFT SAFETY VALVE DISCHARGE CAPACITY FOR SATURATED STEAM (Kg/hr.) AT 5% OVER PRESSURE CONSTANT 'C' = 0.50

Size of Valves

Orifice Dia

SET PRESSURE (Kg./ Cm2)

3.5

7.00

10.54

13

15

17.58

25 x 40 mm

19.00 mm

600

1160

1650

2030

2300

2680

40 x 50 mm

25.00 mm

1135

2015

2910

3530

4035

4680

50 x 80 mm

32.50 mm

1915

3410

4925

5975

6830

7920

65 x 90 mm

40.00 mm

2910

5175

7466

9055

10345

12010

80 x 100 mm

48.50 mm

4290

7620

10990

13320

15215

17660

100 x 150 mm

72.00 mm

9490

16830

24250

29400

33600

39000

150 x 200 mm

115.00 mm

23820

43250

61190

74270

84800

98580




NETA VALVES PVT. LTD.
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NETA VALVES PVT. LTD.
A-11, Industrial Focal Point, Jalandhar - 144004, Punjab, India
Phone :+918068341392
Fax :91-181-2602458/2602457
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