QCC AA Series Pressure Regulators | Hydrogen Pressure Control

QCC’s exclusive AA Series hydrogen pressure regulators are engineered for precise gas control in hydrogen control manifolds used in power generation and other high-demand industrial applications. Designed to handle inlet pressures up to 2,200 PSI, these high-performance regulators deliver consistent, accurate delivery pressure to ensure safe and efficient hydrogen flow. The AA Series offers multiple configuration options—including gauges, high-pressure relief valves and CGA and NPT fittings—providing flexibility for a wide range of system requirements. Built for durability and reliability in critical environments, QCC AA Series regulators help improve operational efficiency, maintain system stability and enhance safety in hydrogen gas distribution systems.

Features

Large 2.5” brass gauges (where applicable) for easy-to-read pressure monitoring

Multi-component seat assembly for improved accuracy and quick maintenance

Precision machined brass or aluminum body for structural integrity and corrosion resistance

Minimal pressure drop during operation with less than 1 PSI pressure creep when set

Hand-set and performance tested to verify pressure accuracy, consistency, and operational reliability

Requirements

For use with hydrogen

Applications

Hydrogen control manifolds on generators and other similar equipment

Model Information

Part #	Gas	Inlet Max Pressure (PSI)	Delivery Pressure (PSI)	Inlet Fitting	Outlet Fitting	Pressure Relief Valve	Gauges
AA0805-7	Hydrogen	100	0-50	CGA555 / 982	CGA300	Yes	Yes
AA1126	Hydrogen	100	0-5	CGA555 / 982	CGA300	No	No
AA1591	Hydrogen	100	5	CGA555 / 982	CGA300	Yes	No
AA1591-2	Hydrogen	100	0-50	CGA555 / 982	CGA300	Yes	No
AA1591-3	Hydrogen	100	0-30	CGA555 / 982	CGA300	Yes	No
AA1591-4	Hydrogen	100	0-50	CGA555 / 982	CGA300	Yes	No
AA1591-5	Hydrogen	100	0-60	CGA555 / 982	CGA300	Yes	No
AA1591-6	Hydrogen	100	0-70	CGA555 / 982	CGA300	Yes	No
AA2623	Hydrogen	100	2	1/4" NPTF	1/4" NPTF	No	Yes
AA0147	Hydrogen	2,200	0-50	CGA555 / 982	CGA300	Yes	No
AA0147-2	Hydrogen	2,200	0.50	CGA555 / 982	CGA300	Yes	No
AA0647	Hydrogen	2,200	0-120	CGA555 / 982	CGA300	Yes	No
AA0805-2	Hydrogen	2,200	0-100	CGA555 / 982	CGA300	Yes	Yes
AA1125	Hydrogen	2,200	0-50	CGA555 / 982	CGA300	No	No
AA1298	Hydrogen	2,200	0-75	CGA555 / 982	CGA300	Yes	Yes