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

Watts Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 50 psi to 175 psi - Standard Capacity Water Pressure Regulators
WattsStandard Capacity Water Pressure Regulators

Watts Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 50 psi to 175 psi

The WATTS Pressure Regulator is a standard capacity water pressure regulator with FNPT x FNPT connections. It is constructed from brass, has a 3/8 in pipe size, and is adjustable from 50 psi to 175 psi. This model…

SKU 3G-OTH-439537

Also listed as: 38LF26A50175 · 3 8 LF26A 50 175 · 3-8-LF26A-50-175

Brand
Watts
Item
Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 50 psi to 175 psi
Category
Standard Capacity Water Pressure Regulators
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

Watts
Manufacturer Part Number
3/8 LF26A 50-175
Type
Brass, 50 psi to 175 psi, NPT x NPT
Pipe Size
3/8 in
Low-Lead Compliance
Low-Lead Compliant

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

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

Product Description

The WATTS Pressure Regulator is a standard capacity water pressure regulator with FNPT x FNPT connections. It is constructed from brass, has a 3/8 in pipe size, and is adjustable from 50 psi to 175 psi. This model (MPN 3/8 LF26A 50-175) is low-lead compliant.

Frequently Asked Questions

What is a WATTS pressure regulator used for?

A WATTS pressure regulator reduces and stabilizes incoming water pressure to protect plumbing systems and equipment from damage. It is commonly used in commercial and residential water supply lines, irrigation systems, and industrial process applications where consistent pressure is critical.

What are the specifications of the WATTS 3/8 LF26A 50-175 pressure regulator?

The WATTS 3/8 LF26A 50-175 is a standard capacity water pressure regulator with 3/8 in FNPT x FNPT connections. It is made of brass, adjustable from 50 psi to 175 psi, and is low-lead compliant. The pipe size is 3/8 in and the connection type is NPT x NPT.

Where to buy a WATTS pressure regulator worldwide?

3G Electric supplies the WATTS pressure regulator (MPN 3/8 LF26A 50-175) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this low-lead compliant brass regulator.

How to install a WATTS water pressure regulator?

Install the WATTS regulator in the main water line after the shut-off valve, with the arrow on the body pointing in the flow direction. Use pipe thread sealant on the NPT connections, tighten securely, and adjust the set screw to your desired outlet pressure between 50 psi and 175 psi.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

Watts Products

3G Electric supplies Watts standard capacity water pressure regulators. 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
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 3/8 LF26A 10-125)
Watts
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 3/8 LF26A 10-125)
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 20 psi to 175 psi, NPT x NPT (MPN 1/2 LF263AP 20-175)
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 20 psi to 175 psi, NPT x NPT (MPN 1/2 LF263AP 20-175)
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/2 LF26A 10-125)
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/2 LF26A 10-125)
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/4 LF26A 10-125)
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/4 LF26A 10-125)
WATTS Water Pressure Regulator: FNPT x FNPT, 3/4 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 3/4 LF223-S)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 3/4 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 3/4 LF223-S)
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 50 psi to 175 psi, NPT x NPT (MPN 1/2 LF263A 50-175)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 50 psi to 175 psi, NPT x NPT (MPN 1/2 LF263A 50-175)

More from Watts

View all Watts parts
WATTS Water Pressure Reducing Valve: NPT x NPT, 3/4 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 3/4 LF25AUB-HP-Z3)
Watts
WATTS Water Pressure Reducing Valve: NPT x NPT, 3/4 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 3/4 LF25AUB-HP-Z3)
WATTS Water Pressure Reducing Valve: NPT x NPT, 1 1/4 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 11/4 25AUB-GG-Z3)
Watts
WATTS Water Pressure Reducing Valve: NPT x NPT, 1 1/4 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 11/4 25AUB-GG-Z3)
WATTS Water Pressure Reducing Valve: NPT x NPT, 1 1/2 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 11/2 25AUB-GG-Z3)
Watts
WATTS Water Pressure Reducing Valve: NPT x NPT, 1 1/2 in Pipe Size, Copper Silicon Alloy, NPT x NPT (MPN 11/2 25AUB-GG-Z3)
WATTS Water Pressure Regulator: FNPT x FNPT, 1 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1-1/2 LF223-S)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1-1/2 LF223-S)
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/4 LF263A-1-25)
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/4 LF263A-1-25)
WATTS Water Pressure Regulator: FNPT x FNPT, 3 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 3 LFN223M1-B)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 3 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 3 LFN223M1-B)
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1/2 LF223-S)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1/2 LF223-S)
WATTS Water Pressure Regulator: FNPT x FNPT, 2 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 2-1/2 LFN223M2-B)
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 2 1/2 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 2-1/2 LFN223M2-B)