Flow Restrictor

The Flow Restrictor is used in pneumatic applications such as Fire/Smoke Dampers with pneumatic actuators where it is required to control the flow of air to the actuator.

Specifications:

• Hex Nipple
• Body and Orifice - Free Machining Brass or Stainless Steel
• Threads - 1/8" National Pipe Thread or NPT
• Standard Orifice Size - 0.059" (Customs and Variations are Available)

Model EFL Fusible Link

• Uses Model J Fusible Link, a quick response standard fusible link
• More consistent release temps. compared to resetable bi-metal product.
• No external load on link, regardless of fire/smoke damper size.
• Faster response time by positioning fusible link in air-flow.
• Load applied on fusible link is part of EFL assembly.

Smoke Operation: EFL uses a S.P.D.T. switch for wiring a smoke detector. Upon smoke detector activation, the switch bypasses the fusible link and closes the damper, and remains closed until smoke signal stops. Listed by Underwriters Laboratories, Inc.

Model PFV Pneumatic Fusible Valve

• Specifically Designed for Pneumatic Actuated Fire/Smoke Dampers
• Listed by Underwriters Laboratories, Inc.
• Corrosion Resistant Construction
• All Brass Components
• Rigid Assembly
• Comes to You Ready to Install
• 1/2-13 UNC Threads are Furnished for Ease of Mounting in Damper Walls
• Utilizes our Model-J Fusible Link as Thermal Actuating Device
• 1/8 NPT Male Pipe Threads are Furnished for Ease of Connection to Air Lines