Control valves

Pressure reducing/surplussing valves

Capacities

Spare parts

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

in broken line are not supplied as spares.

Full lift capacity for safety valve sizing purposes are shown below:

Size

Kvs

For conversion:

1⁄2"

2.1

Cv (UK) = Kv x 0.963

3⁄4"

1"

3.6

4.3

Cv (US) = Kv x 1.156

Available spares

* Pressure

Grey

adjustment

Green

spring

Orange

* Bellows assembly specify type

* Spring housing hex. bolts (set of 4)

Valve and seat assembly

* Gasket set

* Strainer screen

* Common to all sizes.

How to order spares

0.35 to 1.7 bar g

1.40 to 4.0 bar g

3.50 to 8.6 bar g

Stainless steel or

phosphor bronze

4, 19

4, 19

4, 19

5, 6, 9

Dimensions / weight (approximate) in mm and kg

SizeA

B

C

D

E

F

Weight

1⁄2"

83

32

62

130

25

40

2.0

3⁄4" 96

32

62

130

25

40

2.1

7

6, 11, 12, 13, 14, 15, 16, 20

6, 12, 18

16

1" 108

32

62

130

25

40

Withdrawal

distance

2.4

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

1⁄2" LRV2S pressure reducing valve.

19

Pressure

adjustment

spring

4

7

Spring housing

hex. bolts

F

Withdrawal

distance

9

Bellows assembly

5

B

A

Safety information, installation and maintenance

6

6

6

For full details see the Installation and Maintenance Instructions

(IM-P001-08) supplied with the product.

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" LRV2S pressure reducing valve

with gunmetal body, screwed BSP connections, stainless steel

bellows and fitted with an orange spring for downstream pressure

control of 3.5 to 8.6 bar g.

Please note that the only certification that is available for this

product is a manufacturer's Typical Test Report. Note: All

certification/inspection requirements must be stated at the

time of order placement.

20

11

12

13, 14, 15

16

Installation note:

Valve

and seat

assembly

12

Gasket set

18

N m

13 - 15

108 - 132

65 - 75

Recommended tightening torques

Item no.

7

11

16

Part

Hex. bolts

Valve seat

Bottom cap

or

mm

13 A/F

M8 x 25

32 A/F

32 A/F

TI-P001-07 CH Issue 5

LRV2B and LRV2S Gunmetal Pressure Reducing Valves

E

D

C

4.6.18