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HA4A Pressure Regulator
HA4AB Pressure Regulator
HA4AM Pressure Regulator
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The complete line of modular Pressure Regulators has been designed for simple, reliable operation. Available in 3/4" through 6" (20 mm through 150 mm) port sizes, these Pressure Regulators use a series of easily-changed, screw-in control modules (pilots) to determine regulating function.
Other features include strong ductile iron or steel bodies, disc-pistons with Teflon seal rings to overcome the problems associated with dirt and dry running systems, reliable Teflon seats, V-port modulation for finer control, stainless steel closing springs, manual-opening stems, and 1/4" NPT gauge ports. These regulators replace R/S model A4A using the same flanges and spacing.
Applications:
Applications include evaporator pressure control, defrost pressure control, receiver pressure control, hot gas bypass regulation, suction pressure control, air or liquid temperature regulation, and internal system pressure relief. Shipped assembled and 100% tested.
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MATERIAL SPECIFICATIONS (HA4A MODULAR PRESSURE REGULATORS)
Body:
¾" through 4": Ductile iron, ASTM A536 (5" & 6": Cast steel, ASTM A352 LCB)
Adapter:
Ductile iron, ASTM A536
Piston:
Steel, disc type, Teflon piston seal
V-Port/Seat:
ductile iron, with Teflon seat
Main Seat:
¾" through 1¼": integral ductile iron (
1½" through 6": stainless steel, removable)
Gaskets:
Nonasbestos, graphite composite
Manual Opening Stem:
Steel, plated
Pilots:
Stainless steel trim
Pilot Orifice:
Stainless steel
Flanges:
Forged steel, ASTM A105
Safe Working Pressure:
400 psig (27 bar)
Operating Temperature:
–60F to +240F (–50°C to +115°C), lower temperatures possible at pressure downratings |
SPECIFICATIONS (HA4AM)
The HA4AM can be ordered “less motor,” which includes control module, cam, and motor-mounting bracket. A three port bonnet with blanking plugs is standard on the HA4AM (up to 4²/100 mm port) so that other pilots can be field installed if required. The “M” feature can also be ordered with other valve combinations, most commonly the HA4ADM Dual Pressure Regulator with motorized pilot. See Hansen Bulletin R429. All material specifications for the HA4A modular pressure regulator apply to the HA4AM. The
following additional specifications apply to the HA4AM.
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MATERIAL SPECIFICATIONS (Sealed Motor Valve)
Mechanical
Body:
ductile iron, ASTM A536
Bonnet Plate:
steel, zinc plated with yellow chromate
V-port Seat:
Teflon
Rotor Can:
stainless steel
Rotor Can O-ring:
neoprene
Stator Housing:
stainless steel
Safe Working Pressure:
400 psig (27 bar)
Operating Temperature:
–60°F to +240°F (–50°C to +115°C)
Corrosion Protection:
Zinc plating is standard up to 1¼". Acrylic enamel paint on larger sizes.
Electrical:
HMMV, HMMVC, HMMR, HMMRC
Power:
24 VAC, 75 W peak, 10 W average running
Enclosure:
watertight, NEMA 4X (IP65)
Cable:
7 wire, 18 AWG, length 10 feet (3 m)
mA loop impedance:
350 ohm
Electrical:
HMSV, HMSVC
Power:
24 VAC, 75 W peak, 10 W average running
Enclosure:
watertight, NEMA 4X (IP65)
Cable:
4 wire, 18 AWG, length 10 feet (3 m) |
Bulletins
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