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

3G Electric
WATTS 1-1/2 LF909M1-QT-FS Reduced Pressure Zone Backflow Preventer - Watts RPZ Backflow Preventers
WATTSWatts RPZ Backflow Preventers

WATTS 1-1/2 LF909M1-QT-FS Reduced Pressure Zone Backflow Preventer

The Watts Reduced Pressure Zone Backflow Preventer (MPN 1-1/2 LF909M1-QT-FS) is a backflow prevention device with a ball valve shut-off and MNPT connection. 3G Electric interprets customer demand and delivers this…

SKU 3G-OTH-740662

Also listed as: 112LF909M1QTFS · 1 1 2 LF909M1 QT FS · 1-1-2-LF909M1-QT-FS

Brand
WATTS
Item
1-1/2 LF909M1-QT-FS Reduced Pressure Zone Backflow Preventer
Part Number
1-1/2 LF909M1-QT-FS
Category
Watts RPZ Backflow Preventers
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 Specifications

WATTS
Manufacturer Part Number
1-1/2 LF909M1-QT-FS
Connection Type
MNPT
Shut-Off Valve Type
Ball Valve

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 Reduced Pressure Zone Backflow Preventer (MPN 1-1/2 LF909M1-QT-FS) is a backflow prevention device with a ball valve shut-off and MNPT connection. 3G Electric interprets customer demand and delivers this genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a Watts Reduced Pressure Zone Backflow Preventer used for?

A Watts Reduced Pressure Zone Backflow Preventer, such as the 1-1/2 LF909M1-QT-FS, protects potable water supplies from contamination by preventing reverse flow. It is commonly installed in commercial, industrial, and irrigation systems where cross-connection hazards exist.

What are the specifications of the Watts 1-1/2 LF909M1-QT-FS backflow preventer?

The Watts 1-1/2 LF909M1-QT-FS features a ball valve shut-off type and MNPT connection. It is a reduced pressure zone backflow preventer designed for reliable backflow protection in water systems.

Where to buy a Watts RPZ backflow preventer worldwide?

3G Electric supplies the genuine Watts RPZ backflow preventer (MPN 1-1/2 LF909M1-QT-FS) worldwide. We handle full logistics, customs clearance, and delivery to your site, ensuring you receive the correct industrial equipment for your application.

How to install a Watts reduced pressure zone backflow preventer?

Install the Watts RPZ backflow preventer in a horizontal or vertical position with adequate clearance for testing and maintenance. Follow local plumbing codes and manufacturer guidelines for proper orientation, support, and connection using the MNPT fittings.

Used in

Common applications for WATTS
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
Not sure this is the right part? Photo-identify it

WATTS Products

3G Electric supplies WATTS watts rpz backflow preventers. 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

More from WATTS

View all WATTS parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first