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MUELLER Pressure Relief Valve: Straight-Thru, 70 psi to 450 psi, 1/2 in Male NPT - Refrigeration Pressure Relief Valves
MUELLERRefrigeration Pressure Relief Valves

MUELLER Pressure Relief Valve: Straight-Thru, 70 psi to 450 psi, 1/2 in Male NPT

The MUELLER Pressure Relief Valve: Straight-Thru is a refrigeration pressure relief valve designed for A2L-compatible systems. It features a pressure range of 70 psi to 450 psi, with 1/2 in Male NPT and 5/8 in Male…

SKU 3G-OTH-72055

Also listed as: A15504450 · A 15504 450 · A-15504-450

Brand
MUELLER
Item
Pressure Relief Valve: Straight-Thru, 70 psi to 450 psi, 1/2 in Male NPT
Category
Refrigeration Pressure Relief Valves
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

MUELLER
Manufacturer Part Number
A 15504-450
Type
70 psi to 450 psi
Male NPT
1/2 in
Male Flare
5/8 in
A2L Compatible
Yes

Technical Documents

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

Product Description

The MUELLER Pressure Relief Valve: Straight-Thru is a refrigeration pressure relief valve designed for A2L-compatible systems. It features a pressure range of 70 psi to 450 psi, with 1/2 in Male NPT and 5/8 in Male Flare connections (MPN A 15504-450).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a MUELLER pressure relief valve used for?

A MUELLER pressure relief valve protects refrigeration systems from overpressure. It opens automatically when pressure exceeds its set range, safeguarding compressors and piping. This straight-thru model is A2L-compatible, making it suitable for modern low-flammability refrigerant systems.

What are the specifications of the MUELLER A 15504-450 pressure relief valve?

The MUELLER A 15504-450 is a straight-thru pressure relief valve with a range of 70 psi to 450 psi. It has a 1/2 in Male NPT inlet and a 5/8 in Male Flare outlet. It is A2L-compatible, meaning it works with mildly flammable refrigerants. The brand is MUELLER.

Where to buy MUELLER pressure relief valves worldwide?

3G Electric supplies MUELLER pressure relief valves worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order the MUELLER A 15504-450 or other models. We source genuine parts for your refrigeration needs.

How to install a MUELLER straight-thru pressure relief valve?

Install the MUELLER valve with the 1/2 in Male NPT connection into the system port and tighten securely. Connect the 5/8 in Male Flare outlet to the discharge line. Ensure the valve is oriented vertically and not blocked. Always follow local codes and the manufacturer's instructions for safe operation.

Used in

Common applications for MUELLER
Commercial refrigeration systems — Mueller steel shell filter driers for moisture and contaminant removal in liquid lines.
HVAC installations — Mueller sweat connection ball valves for flow control in refrigerant circuits.
Industrial process cooling — Mueller magnetic check valves to prevent backflow in refrigerant piping.
Refrigeration system maintenance — Mueller flare nuts and bushings for access valve connections.
Low-GWP refrigerant systems — Mueller A2L-compatible ball valves for use with low-flammability refrigerants.
Retrofit projects — Mueller filter driers and valves for upgrading existing refrigeration equipment.

MUELLER Products

3G Electric supplies MUELLER refrigeration pressure relief valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MUELLER Refrigerant Ball Valve: 5 Cv, 1/2 in Female Swivel Right-Hand, Access Port, No Relief Port (MPN A 18947)
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MUELLER Refrigerant Ball Valve: 4 Cv, 3/8 in Female Swivel Right-Hand, Access Port, No Relief Port (MPN A 18946)
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MUELLER Refrigerant Ball Valve: 4 Cv, 3/8 in Female Swivel Right-Hand, Access Port, No Relief Port (MPN A 18946)
MUELLER Refrigerant Ball Valve: 1 Cv, 3/8 in Female Swivel Right-Hand, Access Port, No Relief Port (MPN A 18949)
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MUELLER Refrigerant Ball Valve: 1 Cv, 3/8 in Female Swivel Right-Hand, Access Port, No Relief Port (MPN A 18949)

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