Gauge, Purge, & Transducer Valves
Hansen’s specially designed Gauge, Purge, and Transducer Valves feature tough, forged steel bodies, compact size, and polished stainless steel stems.
Their patented o-ring plus packing dual-seal design and polished stainless steel stems provides leak-free packing. The safety stem design prevents removal of stem from body or stem “blowout”. A Long Neck ® version is available that provides extra clearance for gauge-turning rotation. They are available in 1/4 ” or 3/8″ MPT or FPT globe or angle sizes and styles.
Hansen’s Gauge, Purge, and Transducer Valves are available with seal caps, bar handles, or bare stems. Often used to isolate pressure gauges on regulators, these valves can also be used to pump out, purge, and meter refrigerant liquid or gas.
Hand Expansion Valves
These precision-calibrated, adjustable, slotted plug flow regulating valves (hand expansion valves) are ideal for metering or flashing expansion of liquid refrigerants.
Their slotted plugs are more tolerant of dirt particles than are common metal-seated taperedplug expansion valves, and are less susceptible to wire drawing.
Valves 2½” (65 mm) and larger have a characterized plug. All valves have near linear flow characteristics per turn open and are tight closing with Teflon seats. These valves have stainless steel stems with back seating for seal replacement. The patented non-leak seal plus packing design permits low torque operation for valve adjustments since the packing nut requires little tightening. Bar handle or yellow seal caps distinguish them from shut-off valves.
HD101 Defrost Drainer
The HD101 Defrost Drainer, a variation of the HT100 high side float, has an adjustable vent valve bypass to fine-tune individual systems which may experience evaporator defrost gas binding. It is designed as a liquid condensate drain for an evaporator during hot gas defrost. It drains liquid while preventing most hot gas from flowing to the suction line. This process saves energy by eliminating artificial loading of the compressor.
HT Series High Side Floats
These carefully designed and manufactured high-pressure float drain regulators are ideal for metering
high-pressure refrigerant liquid to a lower-pressure
vessel without allowing refrigerant gas to pass. These
self-contained, nonelectrical float drain regulators
provide a simple solution for many applications.
Liquid and gas enter the valve inlet and collect in
the valve body. As the liquid level rises, it lifts the
float ball assembly exposing the slide valve orifice
and metering liquid to the outlet.
Receiver Level Transducer Probes
(For Halocarbon Systems, especially Supermarkets)
Designed to be inserted directly into refrigerant receivers and facilitate the continuous measurement of refrigerant liquid levels.
The following results can be tracked: refrigerant loss detection, refrigerant inventory measurements, warnings of excessive refrigerant levels, and insufficient refrigerant quantity. Factory pre-calibrated and tested with no moving parts to break, jam, or fail.
Horizontal Receiver Probes (SHP) can also be used in short [less than 30˝ (762 mm) insertion] vertical receivers. For vertical receivers 12˝ to 20˝ (305 to 508 mm) diameter (other diameters need special engineering). Maximum insertion length is 69˝ (1752 mm). Output signal 0-5V or 1-6V; 4-20 mA available.
Techni-level™ Level Transducer Probes
These specially-designed Techni-Level Transducer Probes with 4-20 mA output are for refrigerant level control in computer operated industrial and commercial plants.
All transducer electronics are compact, sealed watertight, and located on top of the probe. A 24 Volt DC power input is required. Fifty feet of two-wire cable is included with longer lengths available. An optional 0-100% built-in digital readout is available. Probe active lengths up to 168″ (4267 mm). Level columns are available from Hansen or can be field-fabricated.
For use with ammonia, R22, R134a and other compatible refrigerants.Techni-Level Transducer Probes are an ideal solution for computer-controlled applications on vertical or horizontal vessels, pump accumulators, pilot receivers, and refrigerant loss monitoring.
Vari-Level™ Adjustable Level Control
The Hansen Vari-Level Adjustable Level Control provides excellent level control and monitoring flexibility for industrial and large commercial refrigeration systems. It takes the place of multiple single point level switches on new or existing refrigerant vessels.
This popular, user-friendly, and field-proven system consists of a control unit, and a probe to be inserted in a level column. Control unit models are available with up to five individual level set point relays. Level set points and differentials can be easily set up, and then simply changed by moving knobs when necessary. A built-in level simulator enables the operator to easily check proper operation of control valves, pumps, and alarms at the various set points.
For use with ammonia, R22, R134a and other compatible refrigerants.
SEE-LEVEL™ Refrigerant Liquid Indicators
Hansen SEE-LEVEL™ liquid indicators provide simple
indication of true liquid levels in industrial and
commercial refrigeration systems. When liquid is
present the distinctive reflex lens appears dark; when
vapor is present, the lens is light. The long universal
housing provides adequate length for ease of welding
as well as insulation clearance for low temperature
applications. The optional frost shield facilitates clear
viewing of liquid level under frosting conditions.
Single Point Sensors and Switches
These compact Single Point Level Sensors and Switches are economical solutions for reliable and accurate level detection. They are designed to detect the presence of ammonia or halocarbon refrigerant liquid (but not oil) at a specific location in vessels containing refrigerant by capacitance-type, non-optic sensing.
The computer-compatible, low-voltage signal output of the level sensor can be used directly with plant computers, PLC’s, solid-state relays or other controllers. The relay output from the level switch is suitable for direct connection to solenoids, alarms, and computers. Single Point Level Sensors & Switches for refrigerants for Refrigerant Vessels, Compressor Packages, Pump Packages, and Flooded Evaporators.
HA2A, HA2B Small Pressure Regulators
These small pressure regulators are rugged, compact, and designed for use with refrigerant liquid or vapor. They are suitable for ammonia, R22, R134a, CO2 to 600 psig and other approved refrigerants.
These regulators are commonly-used in small capacity applications or as a pilot valve to operate larger main valve and a non-atmospheric relief to low side (HA2BK). These regulators are furnished with flanges for FPT (Female Pipe Thread, American National Standard, tapered), socket weld or weld neck (to match American Pipe Schedule 40), or ODS (Outside Diameter Sweat) for copper tubing size connections. They have an inlet pressure gauge port.
These regulators can be furnished with close-coupled strainers on the inlet. The HA2BQ and HA2BT are different construction, using the same screw-in control modules (pilots) found on the Hansen HA4AQ and HA4AT pressure regulators.