Control valves

Pressure reducing/surplussing valves

Page 3 of 3

Dimensions (approximate) in mm and kg

Size

1⁄2" BSP/NPT

DN15

PN25

ANSI 150

3⁄4" BSP / NPT

DN20

PN25

ANSI 150

1"

BSP / NPT

PN25

F

-

97

91

-

107

100

-

117

110

* E1

F

Spare parts

The spare parts available are shown in heavy outline. Parts drawn

in broken line are not supplied as spares.

A

B

B

C

D

*

E1

*

E2

83

-

-

62

130

25

15

-

150

-

62

130

25

15

-

-

140

62

130

25

15

96

-

-

62

130

25

15

-

150

-

62

130

25

15

-

-

140

62

130

25

15

108

-

-

62

130

25

15

-

160

-

62

130

25

15

-

-

153

62

130

25

15

Available spares

* Pressure

Grey

adjustment

Green

0.14 to 1.7 bar g

1.40 to 4.0 bar g

3.50 to 8.6 bar g

4, 18

4, 18

4, 18

spring

Orange

* Bellows (Stainless steel)

* Spring housing hex. bolts (set of 4)

Valve and seat assembly

* Set of gaskets/'O' rings

* Common to all sizes.

How to order spares

5, 6

7

6, 11, 12, 15, 19

6, 12, 17

DN25

ANSI 150

* Note: E1 and E2 are withdrawal distances for maintenance.

D

C

C

A

*E2

B

Always order spares by using the description given in the column

headed 'Available spares' and state the size, type and pressure

range of the reducing valve.

Example: 1 off Pressure adjustment spring (orange), having a

downstream pressure range of 3.5 to 8.6 bar g for a Spirax Sarco

DN15 SRV2S pressure reducing valve.

18

Spring housing

hexagon bolts

7

Pressure

adjustment

spring

Weights (approximate) in mm and kg

Size

1⁄2"

BSP / NPT

PN25

ANSI 150

3⁄4"

BSP / NPT

PN25

ANSI 150

1"

BSP / NPT

Screwed

Weight

Flanged

-

3.1

2.4

-

3.8

2.8

-

4.4

3.6

1.48

-

-

1.58

-

-

1.70

-

-

DN15

DN20

4

5

6

6

12

17

DN25

PN25

ANSI 150

6

19

Bellows set

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P186-03) supplied with the product.

Installation note:

The valve should be installed in a horizontal pipeline with the

direction of flow as indicated by the arrow on the valve body.

How to order

Example: 1 off Spirax Sarco 1⁄2" screwed BSP SRV2S pressure

reducing valve with stainless steel body and bellows, fitted with

an orange spring for a downstream pressure control of 3.5 to

8.6 bar g.

Valve

and seat

11

assembly

12

15

Gasket set

SRV2S Stainless Steel Pressure Reducing Valve

TI-P186-05 CH Issue 7

Page 3 of 3

4.6.12