CF Flanges with Copper Bonnet Seal

CF flanged gate valves have metric tapped flanges as standard. US size and imperial tapped flanges available on request.
Laminar flow, million cycle, 3 position, shielded gate, throttle, rectangular & aluminium gate valves are also available, please contact sales office for further details and pricing.

Features:
• 304 stainless steel vacuum brazed body.
• AM350 welded bellows.
• Electropolished inside and out.
• Manual or electropneumatic operation.
• Acme threads on manual actuator.
• 24VDC air control solenoid as standard on pneumatically actuated valves. (80psi max)
• Magnetic reed switch position indicator on pneumatic valves as standard.
• Optional microswitch position indicator.
• Minimal vibration during cycling.
• 100,000 cycles before service*.
• Copper bonnet seal, 1 x 10^-10 Torr vacuum rating.
• Helium leak rate <2 x 10^-9 std.cc/sec.
• Roughing ports available to special order.
• High temperature Kalrez^® gate seal available.

Solenoid plumbing – Uses 4mm airlines from the solenoid to the actuator. The solenoid itself has a 1/8-27 npsf connection where you customer can add their choice of connection. The IN and EXH ports are left empty.

Bakeout Specifications:
Max. Temperature**
Copper bonnet seal / Viton^® gate seal : 200°C in open position, 150°C in closed position
Copper bonnet seal / Kalrez^® gate seal : 250°C
Actuator : 60°C

Conductance:

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* – Expected cycle life is application dependent.
** – To prevent damage to the gate seal, gate valves should be baked out in the open position.