Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
AQUATROL Adjustable Relief Valve: MNPT x FNPT, 3/8 in x 1/2 in, Bronze - Non-Code Air, Inert Gas & Liquids Pressure Relief Valves
AQUATROLNon-Code Air, Inert Gas & Liquids Pressure Relief Valves

AQUATROL Adjustable Relief Valve: MNPT x FNPT, 3/8 in x 1/2 in, Bronze

The AQUATROL Adjustable Relief Valve (SKU 3G-OTH-437788) is a Non-Code Air, Inert Gas & Liquids Pressure Relief Valve with a 3/8 in x 1/2 in MNPT x FNPT connection in bronze, rated for a maximum operating pressure of…

SKU 3G-OTH-437788

Also listed as: 55BA1M2U125 · 55BA1M2U1 25

Brand
AQUATROL
Item
Adjustable Relief Valve: MNPT x FNPT, 3/8 in x 1/2 in, Bronze
Category
Non-Code Air, Inert Gas & Liquids Pressure Relief Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

AQUATROL
Manufacturer Part Number
55BA1M2U1-25
Type
3/8 in x 1/2 in, Bronze
Max. Op Pressure
200 psi

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

AQUATROL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The AQUATROL Adjustable Relief Valve (SKU 3G-OTH-437788) is a Non-Code Air, Inert Gas & Liquids Pressure Relief Valve with a 3/8 in x 1/2 in MNPT x FNPT connection in bronze, rated for a maximum operating pressure of 200 psi (MPN 55BA1M2U1-25). 3G Electric sources this genuine AQUATROL valve as part of our broad industrial supply across 14 departments, with specialist expertise in pumps and controls to support your pressure management needs.

Frequently Asked Questions

What is the AQUATROL 55BA1M2U1-25 adjustable relief valve used for?

The AQUATROL 55BA1M2U1-25 is a non-code pressure relief valve for air, inert gas, and liquids. It protects systems from overpressure up to 200 psi. Common in industrial pneumatic circuits, hydraulic return lines, and water systems where adjustable relief is needed.

What are the specifications of the AQUATROL 55BA1M2U1-25 relief valve?

This AQUATROL valve has a 3/8 in MNPT x 1/2 in FNPT connection, bronze body, and maximum operating pressure of 200 psi. It is a non-code adjustable relief valve for air, inert gas, and liquids. The manufacturer part number is 55BA1M2U1-25.

Where to buy the AQUATROL 55BA1M2U1-25 relief valve worldwide?

3G Electric supplies the AQUATROL 55BA1M2U1-25 adjustable relief valve to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this bronze, 200 psi relief valve.

How to install the AQUATROL 55BA1M2U1-25 adjustable relief valve?

Install the AQUATROL 55BA1M2U1-25 in a vertical position with the outlet piped to a safe drain. Use thread sealant on the 3/8 in MNPT inlet and 1/2 in FNPT outlet. Adjust the set pressure by turning the adjustment screw while monitoring a pressure gauge. Never exceed 200 psi.

Used in

Common applications for AQUATROL
Industrial compressed air systems — AQUATROL 69 series non-code adjustable relief valves for overpressure protection on air receivers and piping.
Steam boiler pressure vessels — AQUATROL 740 series ASME Section VIII safety relief valves for code-compliant steam overpressure relief.
Hydraulic fluid circuits — AQUATROL 69 series non-code adjustable relief valves for pressure limiting in liquid systems up to 250 psi.
Inert gas blanketing systems — AQUATROL 69 series non-code adjustable relief valves for pressure control on nitrogen or argon lines.
Process water piping — AQUATROL 69 series non-code adjustable relief valves for thermal expansion or pump discharge overpressure protection.
Steam distribution headers — AQUATROL 740 series ASME Section VIII safety relief valves for protecting steam mains and branch lines.

AQUATROL Products

3G Electric supplies AQUATROL non-code air, inert gas & liquids pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
Bronze adjustable relief valve with 1/4 in MNPT x 1/2 in FNPT connections. Rated for maximum operating pressure of 200 psi. Designed for overpressure protection in pneumatic and liquid systems handling air, inert gases, or liquids
AQUATROL
Bronze adjustable relief valve with 1/4 in MNPT x 1/2 in FNPT connections. Rated for maximum operating pressure of 200 psi. Designed for overpressure protection in pneumatic and liquid systems handling air, inert gases, or liquids
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 3/4 in MNPT x 3/4 in FNPT connections and a maximum operating pressure of 50 psi. The valve automatically opens at the set pressure to prevent equipment damage in applications such as industrial piping, compressors, and hydraulic circuits
AQUATROL
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 3/4 in MNPT x 3/4 in FNPT connections and a maximum operating pressure of 50 psi. The valve automatically opens at the set pressure to prevent equipment damage in applications such as industrial piping, compressors, and hydraulic circuits
This AQUATROL pressure relief valve is designed for non-code applications involving air, inert gases, and liquids. It features a bronze body with 1 1/4 in MNPT x FNPT connections and a maximum operating pressure of 50 psi. Typical uses include overpressure protection in industrial piping systems where precise pressure control is required
AQUATROL
This AQUATROL pressure relief valve is designed for non-code applications involving air, inert gases, and liquids. It features a bronze body with 1 1/4 in MNPT x FNPT connections and a maximum operating pressure of 50 psi. Typical uses include overpressure protection in industrial piping systems where precise pressure control is required
This pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 1/2 in MNPT x 1/2 in FNPT connections and a maximum operating pressure of 15 psi. The valve automatically opens when system pressure exceeds the set limit, helping to prevent damage to piping and equipment
AQUATROL
This pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 1/2 in MNPT x 1/2 in FNPT connections and a maximum operating pressure of 15 psi. The valve automatically opens when system pressure exceeds the set limit, helping to prevent damage to piping and equipment
AQUATROL Adjustable Relief Valve: MNPT x FNPT, 1 1/2 in x 1 1/2 in, Bronze, 15 psi Max. Op Pressure (MPN 69E1A1M2U1-15)
AQUATROL
AQUATROL Adjustable Relief Valve: MNPT x FNPT, 1 1/2 in x 1 1/2 in, Bronze, 15 psi Max. Op Pressure (MPN 69E1A1M2U1-15)
This AQUATROL pressure relief valve is designed for air, inert gas, and liquids in non-code applications. It features a 1/2 in MNPT x 1/2 in FNPT bronze body with a maximum operating pressure of 50 psi. Typical uses include protecting industrial piping, pneumatic systems, and hydraulic circuits from overpressure
AQUATROL
This AQUATROL pressure relief valve is designed for air, inert gas, and liquids in non-code applications. It features a 1/2 in MNPT x 1/2 in FNPT bronze body with a maximum operating pressure of 50 psi. Typical uses include protecting industrial piping, pneumatic systems, and hydraulic circuits from overpressure

More from AQUATROL

View all AQUATROL parts →
Non-code pressure relief valve for air, inert gas, and liquids. Bronze body with 1 1/4 in MNPT x 1 1/4 in FNPT connections. Maximum operating pressure 100 psi. Used in industrial plumbing, pneumatic, and hydraulic systems to protect against overpressure
AQUATROL
Non-code pressure relief valve for air, inert gas, and liquids. Bronze body with 1 1/4 in MNPT x 1 1/4 in FNPT connections. Maximum operating pressure 100 psi. Used in industrial plumbing, pneumatic, and hydraulic systems to protect against overpressure
This AQUATROL pressure relief valve is designed for non-code air, inert gas, and liquid systems. It features a bronze body with 1/2 in MNPT x 1/2 in FNPT connections and a maximum operating pressure of 100 psi. Typical applications include overpressure protection in plumbing, HVAC, and process control systems
AQUATROL
This AQUATROL pressure relief valve is designed for non-code air, inert gas, and liquid systems. It features a bronze body with 1/2 in MNPT x 1/2 in FNPT connections and a maximum operating pressure of 100 psi. Typical applications include overpressure protection in plumbing, HVAC, and process control systems
This AQUATROL pressure relief valve is designed for non-code applications with air, inert gas, and liquids. It features a bronze body with 1 in MNPT x FNPT connections and a maximum operating pressure of 100 psi. Suitable for use in industrial piping, compressors, and hydraulic systems to protect against overpressure
AQUATROL
This AQUATROL pressure relief valve is designed for non-code applications with air, inert gas, and liquids. It features a bronze body with 1 in MNPT x FNPT connections and a maximum operating pressure of 100 psi. Suitable for use in industrial piping, compressors, and hydraulic systems to protect against overpressure
This AQUATROL pressure relief valve is designed for overpressure protection on non-code air, inert gas, and liquid systems. It features a 1 1/2 in MNPT x 1 1/2 in FNPT connection, a bronze body, and a maximum operating pressure of 50 psi. The valve automatically opens when system pressure exceeds its set point, preventing damage to piping and equipment
AQUATROL
This AQUATROL pressure relief valve is designed for overpressure protection on non-code air, inert gas, and liquid systems. It features a 1 1/2 in MNPT x 1 1/2 in FNPT connection, a bronze body, and a maximum operating pressure of 50 psi. The valve automatically opens when system pressure exceeds its set point, preventing damage to piping and equipment
Non-code pressure relief valve for overpressure protection in air, inert gas, and liquid systems. Bronze body with 1 1/2 in male NPT inlet and 1 1/2 in female NPT outlet. Maximum operating pressure 300 psi. Suitable for industrial piping, compressors, and hydraulic circuits
AQUATROL
Non-code pressure relief valve for overpressure protection in air, inert gas, and liquid systems. Bronze body with 1 1/2 in male NPT inlet and 1 1/2 in female NPT outlet. Maximum operating pressure 300 psi. Suitable for industrial piping, compressors, and hydraulic circuits
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 1 in MNPT x FNPT connections and a maximum operating pressure of 600 psi. The valve automatically opens when system pressure exceeds the set point, safeguarding piping and equipment in industrial process lines, compressor stations, and hydraulic systems
AQUATROL
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a bronze body with 1 in MNPT x FNPT connections and a maximum operating pressure of 600 psi. The valve automatically opens when system pressure exceeds the set point, safeguarding piping and equipment in industrial process lines, compressor stations, and hydraulic systems
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a 1 1/4 in MNPT x 1 1/4 in FNPT connection, a bronze body, and a maximum operating pressure of 200 psi. Typical applications include industrial process lines and compressor stations where automatic pressure relief is required
AQUATROL
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a 1 1/4 in MNPT x 1 1/4 in FNPT connection, a bronze body, and a maximum operating pressure of 200 psi. Typical applications include industrial process lines and compressor stations where automatic pressure relief is required
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a 1 1/4 in MNPT x 1 1/4 in FNPT connection, bronze body construction, and a maximum operating pressure of 250 psi. Typical applications include industrial piping, compressors, and hydraulic circuits where corrosion resistance is required
AQUATROL
This AQUATROL pressure relief valve is designed for overpressure protection in non-code air, inert gas, and liquid systems. It features a 1 1/4 in MNPT x 1 1/4 in FNPT connection, bronze body construction, and a maximum operating pressure of 250 psi. Typical applications include industrial piping, compressors, and hydraulic circuits where corrosion resistance is required