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PEECO High Pressure Flow Switches

For Hazardous Locations with Maximum Allowable Pressure to 10,000 PSI

PEECO HIGH PRESSURE FLOW SWITCH PEECO Series H offer high pressure flow switch models.  Flow Actuated Electrical Switches are unique in the field of flow controls.  Our switches are not a standard shelf item, but are specifically produced to accommodate your application.  The flow switches are maintenance free in lines from 1/16" to 12' or larger.

Utilizing ¼" thick Heat Treated aluminum cover with 5 fully engaged threads, all units are designed to encapsulate any internal explosion. In lieu of a bellows assembly a solid rod extends through a flexure tube brazed or welded into a S.S. ball fixture. Unit has been successfully field tested up to 10,000psi. Wall thickness of the flexure tube will vary with pressure requirements. This model is recommended for all pressures over 600 psi. Each of the four basic styles shown are adaptable to many other fittings and configurations.

PEECO High Pressure Overview PEECO High Pressure Overview (576 KB)

Open - CloseStandard Material of Construction
Cover: Heat Treated Aluminum 356-T6
Housing: Heat Treated Aluminum 356-T6
Body: Steel (ASTM 108-99 & A29-99)
Flexure Tube: 316SS
Stem Paddle: 302, 303 Stainless Steel
Bearings: 440C Stainless Steel Micro Ball
Name Plates: Aluminum
Micro Switch: 15A, 125-250-480 VAC SPDT  1/2 A., 125VDC (see optional switches)
Open - CloseOptional Material of Construction
Body: 316SS, Teflon, Polypropylene, Kel-F, Kynar, Inconel, PVC
Flexure Tube: Any machinable Metal
Stem Paddle: MOST METALS, Teflon, Kynar, Polypropylene, PVC
Bearings: 440C Stainless Steel Micro Ball
Name Plates: Stainless Steel
Micro Switch: 400F, 10A. 125 VDC, Hermetically Sealed, Environment Proof, 600 VAC, 25A, DPDT, and many others.  Silver Brazing Alloy: Copper - 15.5%, Silver - 50%, ZINC - 16.5%, Cadmium - 18%. Cadmium free AND Copper free Alloys are available
Available Models:
PEECO Model HT-F Style HT-F
Connection: Wafer Tee
Standard Size: 2" 150# or 300# R.F.
Optional: Any size, style and rating.
Line Size: 2" and under (standard) over 2" (optional).
Also available in low and low-low flow models.
PEECO Model HT Style HT
Connection: Screwed Tee.
Standard Size: Specify Size.
Optional: Socket-Weld, Butt-Weld.
Line Size: 2" and under (standard) over 2" (optional).
Also available in low and low-low flow model.
PEECO Model HP-S Style HP-S
Connection: Screwed Top Mount.
Standard Size: 2" npt.
Optional Size: Any other size.
Line Sizes: 2½" and up.
PEECO Model HP-F Style HP-F
Connection: Flanged (specify distance from face of mounting flange to top i.d. or c/l of pipe and pipe size.
Standard Size: 2" 150# or 300# R.F.
Optional Size: Any size, style and rating.
Line Size: 2½" and up.
Open - CloseFlow Switch Selection Chart:
Parameters Explosion Proof High Pressure Non-Explosion Proof
Pressure to 600psi Yes No Yes
Pressure to 10,000psi No Yes No
Temp. to 300° F (note 1) Yes Yes Yes
Temperatures to 2000°F Finned Body Extension Required
Hazardous Locations Yes Yes  
Non-Hazardous Locations (note 2) No No Yes
Flow Rates See Flow Rate Page for Details
Screwed Connections Yes Yes Yes
Flanged (see note 3) Yes Yes Yes
Tee, Screwed or Wafer Styles Yes Yes Yes
Welded or Special Duct Mountings Yes Yes Yes
Multiple Actuation Yes Yes Yes
Turbulence, Cavitation, Pulsation Yes Yes Yes
Teflon or other Coatings Paddle - Stem Yes Paddle - Stem
All Teflon, PVC, Kynar or other Yes No Yes
All Stainless Steel Yes Yes Yes
Bronze Yes Yes Yes
Any Machinable Metal No Yes No
Air Operated Yes Yes No
Tri-Clamp / Tri-Clover Yes Yes Yes
Direct Readout Option Yes No Yes
Tropicalization, other coatings Yes Yes Yes
Signal Light Yes Yes No
Alarm Silencing Relay Yes Yes Yes
DIN Flanges and others Yes Yes Yes
Tamper-Proof Setup Yes Yes Yes
Special Flow Conditions Yes Yes Yes
Note (1): For 400° F change micro-switch.
Note (2): Specify NEMA classification.
Note (3): Specify distance from face of mounting flange to top ID or C/L of pipe and pipe size.