Pipeline ancillaries
Piston valves
B1
B
7.3.5
or
mm
13 A / F
13 A / F
13 A / F
17 A / F
22 A/F
26 A/F
Dimensions/weights (approximate) in mm and kg
Screwed, socket weld and butt weld
Size
A
B
B1
C
Weight
Spare parts
Spare parts are available as indicated. No other parts are
supplied as spares.
1⁄2"
85
92
112
75
1.1
142
95
1.6
174
115
2.8
196
150
4.0
Available spares
Set of sealing rings
Bonnet assembly
How to order spares
3 and 4
2, 3, 4, 5, 6, 7, 8, and 11
3⁄4"
100
1"
120
11⁄4"
140
11⁄2"
160
2"
185
102
134
160
180
210
220
150
6.5
Always order spares by using the description given above and
state the size and type of valve.
Example: 1 - Bonnet assembly for a Spirax Sarco 1⁄2" PV4 piston
valve.
265
201
15.0
C
7
6
10
Not an available
spare
A
8+11
2
4
5
3
(Screwed / Socket weld and butt weld)
Safety information, installation and
maintenance
For full details see the Installation and Maintenance Instructions
(IM-P118-05) supplied with the product.
Caution: Valve keys should not be used to operate these valves.
Installation note:
Install the valve in the direction of flow given by the arrow on the
body. The valve can be installed in any plane but not with the
handwheel below the valve body.
Disposal
The product is recyclable. No ecological hazard is anticipated
with the disposal of this product, providing due care is taken.
How to order
Example: 1 off Spirax Sarco 1⁄2" PV4 piston valve having screwed
NPT connections. The valve is to be supplied with EN 10204 3.1
certification. The Kv is to be 3.0.
Recommended tightening torques
Item
Size
Nm
10
1⁄2"
12
3⁄4"
9
1"
9
11⁄4"
30
11⁄2"
35
2"
70
Caution: The torque of the studs is calculated to optimise the
use of the product. An excessive torque can damage the valve
internals (particulary if the product is open). The studs of valve
can be retightened to extend the life of it, but only when it is
closed and not more than the recommended torque.
Page 4 of 4
TI-P118-06 ST Issue 3
PV4 and PV6 Piston Valves
