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Low Flow And Low - Low
Flow
Adjustable
Paddle
From half to full
diameter. Easily changed to accommodate flow/media
changes, half-full lines, fluid separation, etc.
Extremely sensitive
unit designed for minimum actuation.
Available in explosion
and non-explosion proof models in screwed of wafer tees. Recommended
for line sizes up to 2" inclusive.
Click
here for minimum flow rates These
units -- designed for extreme sensitivity -- allow full
flow with minimal pressure drop. Flows of less than 0.01
GPM can be reliably detected. Low flows of gases require a special feature
to compensate for chatter created by the compressibility of
gas. This is accomplished by introducing a constantly
expanding taper on the inlet side, so when the paddle moves
the gas expands uniformly.
Standard Material of Construction
Cover: Heat Treated Aluminum 356-T6
Housing: Heat Treated Aluminum 356-T6
Body: Steel (ASTM 108-99 & A29-99)
Bellows: Seamless 321 Stainless Steel
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 )
Optional Material of Construction
Cover: BY APPLICATION
Housing: BY APPLICATION
Body: 316SS, Teflon, Polypropylene, Kel-F, Kynar, Inconel, PVC
Bellows: Nickel Plated SS, Teflon, Polypropylene, Kynar, PVC
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
Flow 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
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