Threaded Shut-Off Valves

The advanced design and materials of Hansen threaded refrigerant shut-off valves make them far superior to commonly-available products, especially in regard to non-leakage of seats, stems, and bonnets. Anyone who has experienced the failure of a shut-off valve at a crucial time will take care to insist upon these highly-reliable valves.

Coils and Pilot Lights

All Hansen solenoid valves utilize a one-size encapsulated, watertight coil. These coils are strong and efficient, requiring only 16 watts of power. All common voltages and frequencies are available. Coils are designed to operate from 85% to 110% of rated voltage. Pilot light assemblies are also available. The pilot light assemblies require no additional wiring.

The standard coil connection is a ½” female straight pipe fitting (NPSM) for conduit, with two 18” long, insulated 18 AWG wire leads plus ground wire. Coils with a DIN plug or a Quick Disconnect plug are available where codes permit. All coils meet NEMA 3R (IP32) (rainproof) and NEMA 4 (splashproof) requirements. This sealed construction can withstand direct contact with splashing or hose-directed water, wind blown dust or rain, and remain undamaged by the formation of ice.

HS8A Solenoid Valve

This heavy-duty HS8A refrigeration solenoid valve is flanged, compact, and pilot-operated. It is now more dirt resistant, erosion resistant, and corrosion resistant than other similar refrigerant valves. A dirt controlling Teflon piston seal helps prevent sticking. The valve body has improved, erosion resistant flow passages.

A proprietary coating on the valve body gives unmatched corrosion protection. The HS8A is used to provide on-off control of refrigerant flow. When the coil is energized, a pressure difference across the piston opens the valve seat. When the coil is de-energized, a spring closes the main Teflon seat to stop all flow.

HS7 Solenoid Valve

This flanged, heavy duty, pilot-operated, industrial refrigeration solenoid valve controls the flow of refrigerant. When electrically energized, a slight pressure difference across the valve causes it to open wide; when de-energized, a spring promptly closes the main Teflon seat to stop all flow in the arrow direction on the valve body.

The advanced design is ideal as a standard, stock, ammonia liquid line solenoid valve. While primarily for ammonia, this valve is also suitable for R22, R134a, CO2 and other approved refrigerants. Most common use is to automatically stop liquid line feed to recirculating liquid overfeed evaporators, to float switch controlled accumulators, and to thermal expansion valves; it is also suitable for hot gas defrost, and evaporator suction. (Note: for gravity liquid drain or equalization applications use low pressure drop HCK2 gas-powered suction stop valve or HS9B gas-powered solenoid valve.)

HS6 Solenoid Valve

This flanged, industrial refrigeration duty solenoid valve is very simple and compact but rugged in construction. Body is plated steel alloy with a direct lifting stainless steel plunger that contains a teflon seat that closes on a stainless steel orifice. When electrically energized, seat opens wide; when de-energized, it closes to stop flow in the arrow direction on the valve body.

This small, direct lifting valve is used primarily as a pilot for various larger gas-powered or liquid powered main valves, as a remote pilot for back pressure regulators or other devices, or as a liquid stop valve for expansion valves, float valves, or as a general purpose pilot line for ammonia, R22, R134a, CO2 and other approved refrigerants or oil.

HS4D Two Step Solenoid Valve

Hansen Technologies introduces the HS4D Two Step Solenoid Valve. The HS4D is based on the same strength, reliability, design principles and craftsmanship as the standard Hansen HS4A Solenoid Valve—with added versatility. The two step solenoid design provides three positions for the valve: fully closed, partially open (10% stroke), and fully open. These valves are normally closed and will revert to the closed position in the event of a power failure. The valve can be opened via the manual opening stem for pump-out during maintenance.

Similar to the standard HS4A, the HS4D is superior in its ability to overcome dirt and sticky oil during opening, as well as function in an oil-free “dry” system.

HS4A Solenoid Valves

These advanced design, strong bodied, precision manufactured solenoid valves control the on-off flow of refrigerant. They are superior in their ability to overcome dirt and sticky oil during opening and closing, and operate smoothly even in an oil-free “dry” system.

When electrically energized, the upstream pressure is ported through the pilot solenoid to the top of the piston to push it downward and open the main valve seat wide; when de-energized, pressure is no longer ported to the top of the piston and a spring closes the main valve seat to stop flow in the arrow direction on the valve body.

ST Strainer

These rugged Strainers (Filters) are specifically designed to facilitate the removal of foreign materials from refrigeration systems. Strainers help prevent damage to valves and other components, thereby reducing costly service and downtime. They can also be installed as a separate unit. They are available in 1/2″ to 6″ (13 mm to 150 mm) sizes.

Motorized Control Valves

Hansen’s new ½” thru 4” Motorized Control Valve is a direct motor actuated valve designed for operation in Dx, liquid makeup, temperature, pressure and level control applications for a wide variety of refrigerants.

With its industry leading Safe Working Pressure (SWP) and MOPD rating of 800 PSIG, this valve also features water tight, weather proof, IP 67 rating for reliable outdoor use along with factory set plug-and-play logic for quick and hassle-free installation. Manufactured for quality & reliability with automotive grade assembly technology, this valve has been proven in the lab and field.

Refrigerant Float Switch

The Hansen Refrigerant Float Switch (HLL series) is used to electrically indicate or control a liquid level by opening or closing a single pole, double throw (SPDT) switch. Its simple, reliable design provides long life performance for almost any application.

To overcome the most common reason for existing float switch failure-switch burnout-a heavy-duty 10 amp snap action Honeywell Micro Switch® is used. This switch is sealed in a clear housing to allow visual confirmation of switch action but protection from tampering. In addition, the switch is surrounded by an inert gas that provides an environment which inhibits corrosion. An optional switch housing heater prevents moisture penetration in humid environments. These float switches have a rugged steel tank assembly and a high-strength, large diameter ball stem to eliminate potential stem bending or breakage. Hansen Refrigerant Float Switches are interchangeable with R/S LL series float switches.