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 Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 3 psi to 50 psi - Standard Capacity Water Pressure Regulators
WattsStandard Capacity Water Pressure Regulators

Watts Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 3 psi to 50 psi

The WATTS Pressure Regulator (MPN 1/4 LF 263A-B3-50PSI) is a standard capacity water pressure regulator with FNPT x FNPT connections in a 1/4 in pipe size. Constructed in brass, it is low-lead compliant and operates…

SKU 3G-OTH-439536

Brand
Watts
Item
Pressure Regulator: FNPT x FNPT, 1/4 in Pipe Size, Brass, 3 psi to 50 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
1/4 LF 263A-B3-50PSI
Type
Brass, 3 psi to 50 psi
Pipe Size
1/4 in
Max. Op Temp
140°F
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 Pressure Regulator (MPN 1/4 LF 263A-B3-50PSI) is a standard capacity water pressure regulator with FNPT x FNPT connections in a 1/4 in pipe size. Constructed in brass, it is low-lead compliant and operates within a 3 psi to 50 psi pressure range with a maximum operating temperature of 140°F.

Frequently Asked Questions

What is a WATTS 1/4 LF 263A-B3-50PSI pressure regulator used for?

This WATTS standard capacity water pressure regulator reduces and stabilizes incoming water pressure in plumbing systems. It is used in commercial and residential applications to protect downstream equipment from pressure surges, ensuring consistent flow within a 3 psi to 50 psi range.

What are the specifications of the WATTS 1/4 LF 263A-B3-50PSI?

This WATTS regulator has a 1/4 in FNPT x FNPT brass body, low-lead compliant construction, adjustable outlet pressure from 3 psi to 50 psi, and a maximum operating temperature of 140°F. The manufacturer part number is 1/4 LF 263A-B3-50PSI.

Where to buy a WATTS 1/4 LF 263A-B3-50PSI pressure regulator worldwide?

3G Electric supplies the WATTS 1/4 LF 263A-B3-50PSI pressure regulator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install a WATTS 1/4 LF 263A-B3-50PSI pressure regulator?

Install the WATTS regulator in the water line with flow arrow pointing downstream. Use thread sealant on FNPT connections and avoid overtightening. Set outlet pressure between 3 psi and 50 psi using the adjustment screw. Always follow local plumbing codes and manufacturer guidelines.

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 Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 1/2 LF 263AB). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 1/2 LF 263AB). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 3/8 LF 263A-A 1-25 PSI). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 3/8 LF 263A-A 1-25 PSI). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 1/2 LF 26AB). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 1/2 LF 26AB). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 3/8 LF 263 A-B). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 3/8 in Pipe Size, Brass, 3 psi to 50 psi, 140°F Max. Op Temp (MPN 3/8 LF 263 A-B). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/2 LF 263A-A 1-25 PSI). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/2 LF 263A-A 1-25 PSI). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/2 LF 26AA). Key specifications — Brand: WATTS; Low-Lead Compliance: Low-Lead Compliant.
Watts
WATTS Pressure Regulator: FNPT x FNPT, 1/2 in Pipe Size, Brass, 1 psi to 25 psi, 140°F Max. Op Temp (MPN 1/2 LF 26AA). 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.