We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
Mcdonnell & Miller Pressure Relief Valves - Relief Reducing Valves
Mcdonnell & MillerRelief Reducing Valves

Mcdonnell & Miller Pressure Relief Valves

Note: listed by manufacturer as obsolete/discontinued.

SKU 3G-OTH-02717

Also listed as: MM143381 · MM 143381

Brand
Mcdonnell & Miller
Item
Pressure Relief Valves
Part Number
MM-143381
Category
Relief Reducing 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

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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

Mcdonnell & Miller Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Note: listed by manufacturer as obsolete/discontinued.

Frequently Asked Questions

What is the McDonnell & Miller relief reducing valve used for?

This McDonnell & Miller relief reducing valve is used in tanks and hydronic heating systems to protect against over-pressure and minimize hammering caused by flash steam. It is designed for low differential pressure applications at 3 psi.

What are the specifications of the McDonnell & Miller relief reducing valve?

The McDonnell & Miller relief reducing valve features a low differential pressure of 3 psi. It is designed for use in hydronic heating systems and tanks to protect against over-pressure and reduce hammering from flash steam. Note: the manufacturer lists this model as obsolete/discontinued.

Where to buy McDonnell & Miller relief reducing valves in Singapore?

You can source McDonnell & Miller relief reducing valves through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this model, which the manufacturer lists as obsolete/discontinued.

How to select a replacement for an obsolete McDonnell & Miller relief reducing valve?

When selecting a replacement for an obsolete McDonnell & Miller relief reducing valve, verify the required differential pressure (3 psi) and connection size. Consult a hydronic system specialist to identify a compatible current model. 3G Electric can help source suitable alternatives for your Singapore application.

Used in

Common applications for Mcdonnell & Miller
Steam boiler low-water cutoff — McDonnell & Miller inline flow switches (e.g., FS-1) for automatic burner shutdown
Cooling water flow monitoring — McDonnell & Miller insertion-style switches (e.g., FS4-3D) in large-diameter pipes
Hazardous-area process lines — McDonnell & Miller FS7-4E with NEMA 7/9 enclosure for Class I, Div 1 locations
HVAC chilled water systems — McDonnell & Miller FS6-1 inline switch for pump flow verification
Industrial wastewater treatment — McDonnell & Miller FS4-3S stainless steel switch for corrosive fluid flow detection
Boiler feedwater control — McDonnell & Miller FS8-WJ with BSP connections for international installations
Not sure this is the right part? Photo-identify it

Mcdonnell & Miller Products

3G Electric supplies Mcdonnell & Miller relief reducing 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

More from McDonnell & Miller

View all McDonnell & Miller parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first