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
Watts Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 50 psi to 175 psi - Standard Capacity Water Pressure Regulators
WattsStandard Capacity Water Pressure Regulators

Watts Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 50 psi to 175 psi

The WATTS Water Pressure Regulator is a standard capacity water pressure regulator with FNPT x FNPT connections. This 1/2 in pipe size, brass model (MPN 1/2 LF263A 50-175) is low-lead compliant and has a pressure…

SKU 3G-OTH-439376

Brand
Watts
Item
Water Pressure Regulator: FNPT x FNPT, 1/2 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 engineer
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

Technical Specifications

Watts
Manufacturer Part Number
1/2 LF263A 50-175
Type
Brass, 50 psi to 175 psi, NPT x NPT
Pipe Size
1/2 in
Low-Lead Compliance
Low-Lead Compliant
View Full Spec Sheet

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 Water Pressure Regulator is a standard capacity water pressure regulator with FNPT x FNPT connections. This 1/2 in pipe size, brass model (MPN 1/2 LF263A 50-175) is low-lead compliant and has a pressure range of 50 psi to 175 psi.

Frequently Asked Questions

What is a Watts water pressure regulator used for?

A Watts water pressure regulator reduces incoming water pressure to a safe, consistent level for plumbing systems. It protects pipes, fixtures, and appliances from damage caused by high or fluctuating pressure. This brass, low-lead model is suitable for residential and commercial water supply applications.

What are the specifications of the Watts LF263A water pressure regulator?

The Watts LF263A is a standard capacity water pressure regulator with FNPT x FNPT connections. It has a 1/2 in pipe size, a brass body, and an adjustable pressure range of 50 psi to 175 psi. It is low-lead compliant and carries MPN 1/2 LF263A 50-175.

Where to buy a Watts water pressure regulator worldwide?

3G Electric supplies the Watts LF263A water pressure regulator to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we provide genuine Watts parts and support for your procurement needs.

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 direction of flow. Use thread sealant on NPT connections and avoid overtightening. Adjust the pressure setting using the screw under the cap while monitoring a downstream gauge.

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 →

Similar products

Matched by specification & description
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/2 LF263A 10-125). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/2 LF263A 10-125). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
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). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
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). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Water Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/4 LF263A 10-125). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 10 psi to 125 psi, NPT x NPT (MPN 1/4 LF263A 10-125). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Water Pressure Regulator: FNPT x FNPT, 1 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1 LF223-S). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1 LF223-S). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
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). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
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). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Water Pressure Regulator: FNPT x FNPT, 1 1/4 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1-1/4 LF223-S). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1 1/4 in Pipe Size, Brass, 25 psi to 75 psi, NPT x NPT (MPN 1-1/4 LF223-S). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.

More from Watts

View all Watts parts →
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Stainless Steel, 10 psi to 125 psi (MPN 3/8 SS 263A 10 125). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Stainless Steel, 10 psi to 125 psi (MPN 3/8 SS 263A 10 125). Key specifications — Brand: WATTS.
WATTS Boiler Feed Valve: Union Solder x FNPT, Brass, 212°F Max. Op Temp, 5 1/4 in Overall Ht (MPN B911S-M3). Key specifications — Brand: WATTS.
Watts
WATTS Boiler Feed Valve: Union Solder x FNPT, Brass, 212°F Max. Op Temp, 5 1/4 in Overall Ht (MPN B911S-M3). Key specifications — Brand: WATTS.
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Stainless Steel, 3 psi to 50 psi, NPT x NPT (MPN 3/8 SS 263A 3 50). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Stainless Steel, 3 psi to 50 psi, NPT x NPT (MPN 3/8 SS 263A 3 50). Key specifications — Brand: WATTS.
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Stainless Steel, 100 psi to 300 psi (MPN 1/4 SS 263 A 100 300). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Stainless Steel, 100 psi to 300 psi (MPN 1/4 SS 263 A 100 300). Key specifications — Brand: WATTS.
WATTS Water Pressure Regulator: FNPT x FNPT, 1 in Pipe Size, Brass, 10 psi to 35 psi, NPT x NPT (MPN 1 LFU5B-LP-Z3). Key specifications — Brand: WATTS.
Watts
WATTS Water Pressure Regulator: FNPT x FNPT, 1 in Pipe Size, Brass, 10 psi to 35 psi, NPT x NPT (MPN 1 LFU5B-LP-Z3). Key specifications — Brand: WATTS.
WATTS Boiler Feed Water Pressure Regulator: MNPT x MNPT, 1/2 in Pipe Size, Cast Iron, NPT x NPT (MPN 1156F-A). Key specifications — Brand: WATTS.
Watts
WATTS Boiler Feed Water Pressure Regulator: MNPT x MNPT, 1/2 in Pipe Size, Cast Iron, NPT x NPT (MPN 1156F-A). Key specifications — Brand: WATTS.
WATTS Pressure Reducing Valve: FNPT x FNPT, Iron, 160°F Max. Op Temp, 6 3/8 in Overall Ht, NPT x NPT (MPN 0121243). Key specifications — Brand: WATTS.
Watts
WATTS Pressure Reducing Valve: FNPT x FNPT, Iron, 160°F Max. Op Temp, 6 3/8 in Overall Ht, NPT x NPT (MPN 0121243). Key specifications — Brand: WATTS.
WATTS Boiler Feed Water Pressure Regulator: FNPT x F, 1/2 in Pipe Size, Bronze, 10 psi to 25 psi (MPN B1156F). Key specifications — Brand: WATTS.
Watts
WATTS Boiler Feed Water Pressure Regulator: FNPT x F, 1/2 in Pipe Size, Bronze, 10 psi to 25 psi (MPN B1156F). Key specifications — Brand: WATTS.