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Double Acting Pendulum Valves

Pendulum Valves Overview

Pendulum valves are primarily utilized to isolate pumps in environments where traditional gate valves cannot be installed due to geometric constraints.

Features

  • TFM pendulum valves offer a remarkable cycle life of 200,000 operations.
  • Constructed from high-quality 6061-T6 aluminum for enhanced durability.
  • Equipped with reed sensors and a 24VDC solenoid for reliable functionality.
  • Available in bare aluminum or hard anodized surface treatments for varied applications.
  • Capable of operating within a pressure range of up to 10⁻⁹ torr.

Specifications Table

ManufacturerTFM
PressureTorr
Min: 7.500 x 10-9 Torr
Max: 900 Torrmbar
Min: 1.000 x 10-8 mbar
Max: 1200 mbar
RatesLeak Rate
1.000 x 10-9 mbar*L/s
7.520 x 10-10 Torr*L/s
TemperatureBake Actuator Temp
80.0 ºC
176 ºFBake Body Temp
120 ºC
248 ºFBake Solenoid Temp
50.0 ºC
122 ºF
Shaft Seal
Material		Fluorocarbon (FKM)
Cycle
Life		200,000
Actuator
Type		Pneumatic Double Acting
Solenoid Kit
Included		Yes
Max Differential Pressure
Before Open		5.00  mbar
Max Differential Pressure1.20  bar
Bonnet
Seal Type		Fluorocarbon (FKM)
Valve Body
Material		Aluminum
Valve Seal
Material		Fluorocarbon (FKM)
Gate
Material		6061-T6 Aluminum
Gate Seal
Material		Viton
Reed Sensor
Included		1

Ordering Table

Drawing Flange Size Bonnet Seal Type Solenoid Kit Included Thread Part Number
Tooltip ISO200-F (11.22" OD) Fluorocarbon (FKM) Yes M10 PV0800PVIF
Tooltip ISO200-F (11.22" OD) Fluorocarbon (FKM) Yes M10 PV0800PVIF-HA
Tooltip ISO250-F (13.19" OD) Fluorocarbon (FKM) Yes M10 PV1000PVIF
Tooltip ISO250-F (13.19" OD) Fluorocarbon (FKM) Yes M10 PV1000PVIF-HA
Tooltip ISO320-F (16.73" OD) Fluorocarbon (FKM) Yes M12 PV1200PVIF
Tooltip ISO320-F (16.73" OD) Fluorocarbon (FKM) Yes M12 PV1200PVIF-HA

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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