SPIRAX SARCO PF61G-2NC

Description

SPIRAX SARCO PF61G-2NC 2″ BSP 3730097

SPIRAX SARCO PF61G-2NC 1½” BSP 3730096

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 (356 °F).
Optionally, high temperature stem seals (H) can be provided for operation up to 200 °C (392 °F).

Valves are available with one of three sizes of actuator:
Type 1 (45 mm (1.77″)), Type 2 (63 mm (2.48″)) and Type 3 (90 mm (3.54″)) 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 (15 psi g).

Available range
Valve action Screwed
(BSP or NPT) Butt weld Flanged
(EN 1092 or ASME)
NC – Normally Closed
(flow over seat)
PF61G-1NC PF62G-1NC
PF61G-2NC PF62G-2NC PF63G-2NC
PF61G-3NC PF62G-3NC PF63G-3NC
NO – Normally Open
(flow under seat)
PF61G-1NO PF62G-1NO
PF61G-2NO PF62G-2NO PF63G-2NO
PF61G-3NO PF62G-3NO PF63G-3NO
BD – Bi-Directional normally closed
(flow over or under seat)
PF61G-1BD PF62G-1BD
PF61G-2BD PF62G-2BD PF63G-2BD
PF61G-3BD PF62G-3BD PF63G-3BD