|INCH||3/16"||1/2"||3/4"-1"||1/2"-1-1/4"||3/4"- 1-1/4"||1-5/8" - 4"||1-1/4"||1-5/8" - 3"||5"-8"|
|SAFETY RELIEF VALVES
Used with ammonia and halocarbon refrigerant in noncorrosive environments. Relief valves protect each refrigeration system pressure vessel that can be isolated by valves. Municipal codes may govern selection and installation.
The type H safety relief valve is intended to prevent the pressure of the vessel from rising more than 10% above: [a] The design working pressure (DWP) of the vessel, or [b] The pressure setting of the relief device.
Whenever condition permit, it is advisable to have the relief valve pressure setting at least 25% higher than the normal operating pressure for the system. The relief valve pressure setting must not exceed the design working pressure of the vessel.
GAS POWERED SUCTION STOP VALVES GAS POWERED SOLENOID VALVES A typical APM installed in a plant with normal-entering noncondensible loads will handle up to a 200 ton (700 kW) ammonia system. Each purge point will be active between 10 and 30 minutes, depending on the noncondensible gas presence (mostly air) and the purger mode of operation. HANSEN REFRIGERANT PUMS
These heavy duty, flanged, gas-powered suction stop valves are designed to control the flow of refrigerant in large industrial and commercial applications. They remain normally open via a spring and require no pressure drop to operate. A single pilot solenoid valve is required to control a higher pressure refrigerant gas which closes these valves during defrosting.
These heavy duty, flanged, gas-powered suction stop valves are designed to control the flow of refrigerant in large industrial and commercial applications. They remain normally open via a spring and require no pressure drop to operate and have no internal bleed to suction. A dual pilot solenoid valve assembly introduces a high pressure refrigerant source which closes these valves. To open valves, pressure is bled-off back through the low pressure bleed pilot valve and upstream the line pressure plus the spring causes the valve to open wide.
These Items are designed to remove foreign materials, like dirt and weld slag, from refrigeration systems. Strainers help prevent damage to valves and other componints, and thereby reducing costly service and downtime. Strainers are usually close-couple to solenoid valves, pressure regulators and other flanged valves.
Available in the following sizes: 1/2" (13mm), 1" (25mm), 1-1/4" (32mm), 2" (50mm), 2-1/2" (65mm), 3" (75mm), 4" (100mm), 5" (125mm), 6"(150mm), 8" (200mm).
HANSEN AUTO PURGER
The Auto-Purger is a compact and totally automatic, electronically-controlled, noncondensible gas refrigerant purger for reducing condensing pressure, and thereby saving electrical energy used by the refrigeration system. These purging systems are preassembled, prewired, tested, insulated, and includes an automatic water bubbler. Installation requires piping the "foul gas" line, liquid line, suction line, water line, drain line, and wiring the power connection and the remote 1/2" (13 mm) port purge point solenoid valves, which must be purchased separately. Up to four (4) purge points can be controlled by this purger. The AUTO-PURGER M (APM) features welded piping and watertight electrical construction. The APM meets the requirements of the Canadian Standards Association (CSA certified).
Hermetic pumps are superior to most other pumps for refrigeration systems because they are sealless, requiring no oil or grease lubricant, are very smooth and quiet, are not bothered by frost or moisture, and normally provide many years of reliable operation.
Like many fine pieces of machinery, hermetic pumps must be properly installed with regard to system layout, sizing, and controls so the pump receives adequate solid liquid which is free of gas bubbles and abbrasive particles.
GAS POWERED SUCTION STOP VALVES
GAS POWERED SOLENOID VALVES
A typical APM installed in a plant with normal-entering noncondensible loads will handle up to a 200 ton (700 kW) ammonia system. Each purge point will be active between 10 and 30 minutes, depending on the noncondensible gas presence (mostly air) and the purger mode of operation.
HANSEN REFRIGERANT PUMS