Series HFO In-Line Flow Alarms

Latching Alarm Capabilities, For Air, Water or Caustic Fluids, Unrestricted Mounting

The Series HFO In-Line Flow Alarms provide continuous monitoring and control of flow rate levels. The flow alarm can be configured to open or close a contact for an increasing or decreasing set point. Available in 1/4", 1/2", 1" or 1-1/2" female NPT process connections, in aluminum, brass or 304 SS body.

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Product Applications

Waste water processing
Lubrication systems
Process control
Solar systems
Drain lines
Pump testing

Starting at $896.30

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304 Stainless Steel Body for High Pressure Fluids: 6000 psig (413 bar)

Aluminum Body for Air or Other Non-corrosive Gases: 600 psig (41 bar)

Brass Body for Water Based Fluids (non-steam): 3500 psig (240 bar)

Grouped product items
Model	Description	Availability*	Price
HFO-21112	In-line flow alarm, range 1.5-12 SCFM air, 1/4" female NPT.	3-4 Weeks*	$896.30
HFO-21123	In-line flow alarm, range 4-23 SCFM air, 1/4" female NPT.	2-3 Weeks*	$896.30
HFO-22205	In-line flow alarm, range 0.5-5.0 GPM (1-19 LPM) water, 1/2" female NPT.	2-3 Weeks*	$970.85
HFO-22315	In-line flow alarm, range 1-15 GPM (3.8-55 LPM) water, 3/4" female NPT.	4-5 Weeks*	$1,122.95
HFO-22320	In-line flow alarm, range 2-20 GPM (7.5-75 LPM) water, 3/4" female NPT.	2-3 Weeks*	$1,119.70
HFO-22440	In-line flow alarm, range 4-40 GPM (15-151 LPM) water, 1" female NPT.	2-3 Weeks*	$1,140.35
HFO-22550	In-line flow alarm, range 5-50 GPM (19-189 LPM) water, 1-1/2" female NPT.	2-3 Weeks*	$2,585.45
HFO-23202	In-line flow alarm, range 0.2-2.0 GPM (0.75-7.5 LPM) water, 1/2" female NPT.	2-3 Weeks*	$1,439.65
HFO-23210	In-line flow alarm, range 1-10 GPM (3.8-38 LPM) water, 1/2" female NPT.	2-3 Weeks*	$1,439.65

Specifications

Service:: Compatible gases or liquids.
Wetted Materials:: Body: Aluminum, brass or 304 SS; Seals: Buna-N or fluoroelastomer; Magnet: PTFE coated Alnico; Other internal parts: 304 SS.
Viscosity:: 500 SSU.
Temperature Limits:: 170°F (76°C).
Pressure Limits:: Aluminum Body: 600 psig (41 bar); Brass body: 3500 psig (240 bar); 304 SS body: 6000 psig (413 bar).
Enclosure Rating:: NEMA 4X (IP66).
Accuracy:: ±2% FS.
Repeatability:: ±1% of FS.
Switch Type:: SPDT, 10A @ 250 VAC; 0.5A @ 125 VDC (resistive).
Shipping Weight:: 1/4 to 1/2" female NPT models: 3 lb (1.4 kg); 3/4 to 1" female NPT models: 4.5 lb (2.0 kg); 1-1/2" female NPT models: 12 lb (5.4 kg).

Features

Provides two 10 A SPDT limit switches with field adjustable alarm settings for application control and integral direct reading scale provides local indication of flow rate
Increased application versatility with no inlet or outlet straight plumbing requirement and can be mounted horizontally, vertically, or inverted
Outdoor or harsh environment installation capable with rugged cast aluminum construction and NEMA 4X (IP65) enclosure

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