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Low Flow And Low - Low Flow

low flow option

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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Northeast Controls Incorporated
Tel: 1-201-327-7660 | Fax: 1-201-327-3242 | email: sales@nciweb.com
123 Pleasant Avenue - Upper Saddle River - New Jersey 07458 USA
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