Apollo 19MHGA220Q 1½″ 220 lb Bronze Safety Relief Valve

Description

Apollo 19MHGA220Q 1½″ Bronze Safety Relief Valve is a premium, ASME-certified safety valve designed for reliable overpressure protection in steam power boilers, pressure vessels, compressed-air lines, and industrial systems. Built to ASME Sections I & VIII standards, this valve offers a set pressure of 220 psi and is fully certified for steam, air, and non-hazardous gas service. The inlet is 1½″ MNPT and the outlet is 2″ FNPT, making installation easy with standard threaded piping.

Crafted with a durable bronze ASTM B584 body and brass trim, the Apollo 19MHGA220Q is rated for maximum operating pressures of 300 psi at ambient temperatures (-60 °F to 406 °F). It delivers National Board-certified capacity for ASME Sections I/II systems, supporting both high-capacity steam installations and compressed air applications.

Key safety features include a wide wrench hex for secure installation, stainless steel springs, and two control rings for precise calibration. A tapped body drain allows safe removal of condensate or steam during mounting. This valve is made in the USA, carries CRN approval, and ships with performance test reports, ensuring compliance and quality assurance.

H2 Key Features

• ASME Sections I & VIII certified for steam and pressure-vessel protection

• 220 psi set pressure with range from 5 to 300 psig over -60 °F to 406 °F

• Bronze ASTM B584 body and brass trim—durable for industrial conditions

• Threaded inlet/outlet: 1½″ MNPT × 2″ FNPT for easy installation

• Stainless steel spring & brass mechanism, ensuring corrosion resistance

• Tapped drain port vents condensate safely during setup

• USA-made with CRN compliance and performance test documentation

H2 Technical Specifications

H2 Applications

The Apollo 19MHGA220Q is ideal for:

• Steam boiler safety relief valve in commercial/industrial settings

• Compressed-air system pressure protection

• Overpressure safeguarding for pressure vessels and piping

• High-capacity steam/gas discharge scenarios

• Applications requiring ASME-certified relief valves

H2 Installation & Maintenance

1. Thread onto piping using proper sealant or tape (tapered threads only).

2. Orient drain port for safe condensate disposal.

3. For steam systems, discharge to suitable drain or receiver.

4. Periodically inspect seating, spring, and trim for wear.

5. Do not attempt tampering with set pressure—factory tested.

H2 Benefits

• ASME-certified and CRN-approved for safety and legal compliance

• High capacity and precise calibration (National Board-tested)

• Durable bronze and brass body with stainless spring ensure long life

• Easy to install with threaded connections and standard drain access

• Ideal for steam/air/gas systems needing reliable overpressure protection

H2 Why Choose Apollo 19MHGA220Q?

Developed by Conbraco’s Apollo brand, the 19MHGA220Q combines quality manufacturing, ASME and CRN certifications, and full test documentation. Its robust design and set pressure precision make it a trusted choice for demanding boiler, vessel, and pneumatic system safety.

Additional information