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HA2a, ha2b refrigerant small pressure regulator

Product Information

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.


Available Model

HA2B - Back Pressure (Range A, B, C, D, V)

HA2A - Back Pressure (High Capacity) (Range A, B, C D)

HA2BK - Relief (Range A, B, C, D, V)

HA2BO - Oultet (Range V, B)

HA2BL - Differential (Range A)

HA2BQ - Electronic (0 to 87 psig, 0 to 6 bar)

HA2BP - Pneumatic (Range A)

HA2BM - Motor (Range A)


Pressure Settings

Range A, 0 to 150 psig (0 to 10 bar g)

Range B, 30 to 300 psig (2 to 21 bar g)

Range C, 100 to 550 psig (6 to 38 bar g)

Range D, 30 to 450 psig (0 to 31 bar g)

Range V, 20" to 130 psig (-.0.67 to 9 bar g)

0 to 87 psig (0 to 6 bar) 

HA2A, HA2B Refrigerant Small Pressure Regulator, Hansen Technologies Ammonia Refrigeration

HA2A, HA2B Refrigerant Small Pressure Regulator, Hansen Technologies Ammonia Refrigeration 

technical catalog

HA2A and HA2B Small Pressure Regulator 2019 (pdf)Download
HA2A and HA2B (pdf)Download
HA2 Rebuild Kit (pdf)Download

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Rurich Industrial Trading is the authorized distributor of Hansen Technologies in the Philippines.

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