Control valves
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Control valves
In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2016
TI-P373-13
CH Issue 10
PF6
Stainless Steel
Piston Actuated On/Off Valves
Description
A 2-port pneumatically actuated on / off stainless steel valve for use on
steam, water, air, oil and gases. A pneumatic signal acts on the actuator
piston to open or close the valve with a spring return action. A valve
position indicator is included on standard and flow regulator models.
Standard versions have PTFE stem seals for operation up to 180 °C.
Optionally, high temperature stem seals (H) can be provided for
operation up to 200 °C.
Valves are available with one of three sizes of actuator:
Type 1 (45 mm), Type 2 (63 mm) and Type 3 (90 mm) with the following
action options:
- NC (Normally Closed) - Designed for flow over the seat (port 1 to 2).
Caution: Not recommended for waterhammer prevention.
- NO (Normally Open) - Designed for flow under the seat (port 2 to 1).
Can be used to prevent waterhammer on valve closure in liquid
applications.
- BD (Bi-Directional normally closed) - Designed for special
applications that require flow in both directions and incorporates an
anti-waterhammer design for liquid applications flowing under the seat
(port 2 to 1). Note: To help prevent the possibility of waterhammer on
liquid applications flowing over the seat (port 1 to 2) the pressure
should not exceed 1 bar g.
Optional extras
(see 'Valve selection guide', page 8)
:
Sizes, pipe connections and actuator combinations
Valve type and pipe connections
PF60G Threaded spigots to ISO 228 / 1 (DN50 to ISO 338)
DN50
2"
Travel switch Flow regulator Position module
Actuator type and
version
DN15
1⁄2"
DN20
3⁄4"
DN25
1"
PF61G Screwed to BSP or NPT
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PF62G Butt weld to DIN 11850 pipe,
ASME B 36.10 / ISO 65 pipe
PF65G Sanitary clamp to ISO 2852 or ASME BPE
1, 2
PF63G
Flanged to EN 1092 or ASME Class 150
(welded on flanges)
Notes:
1. DN32 is not available with ASME BPE end connections.
2. Clamp and clamp gasket are not included.
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DN32
11⁄4"
DN40
11⁄2"
1 PTFE version
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PTFE version
2
H version
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PTFE version
3
H version
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PTFE version
2
H version
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PTFE version
3
H version
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