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Watts Reduced Pressure Zone Assembly: LF919, With Flood Detection Sensor & Strainer - Watts RPZ Backflow Preventers
WattsWatts RPZ Backflow Preventers

Watts Reduced Pressure Zone Assembly: LF919, With Flood Detection Sensor & Strainer

The Watts LF919 is a reduced pressure zone (RPZ) backflow preventer, part of the Watts RPZ Backflow Preventers product line. This assembly features a flood detection sensor and strainer, with a 3/4-inch FNPT…

SKU 3G-OTH-444389

Also listed as: 34LF919QTSFS · 3 4 LF919 QT S FS · 3-4-LF919-QT-S-FS

Brand
Watts
Item
Reduced Pressure Zone Assembly: LF919, With Flood Detection Sensor & Strainer
Category
Watts RPZ Backflow Preventers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
3/4 LF919-QT-S-FS
Type
With Flood Detection Sensor & Strainer, FNPT, Plastic
Connection Type
FNPT
Shut-Off Valve Type
Ball Valve

Technical Documents

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

Product Description

The Watts LF919 is a reduced pressure zone (RPZ) backflow preventer, part of the Watts RPZ Backflow Preventers product line. This assembly features a flood detection sensor and strainer, with a 3/4-inch FNPT connection and ball valve shut-off valves, as specified by the manufacturer part number 3/4 LF919-QT-S-FS.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Watts LF919 reduced pressure zone assembly used for?

The Watts LF919 reduced pressure zone assembly is used to prevent backflow of contaminated water into potable water supplies. It is commonly installed in commercial and industrial plumbing systems, irrigation, and fire protection lines where cross-connection hazards exist.

What are the specifications of the Watts LF919 backflow preventer?

The Watts LF919 is a reduced pressure zone backflow preventer with a 3/4-inch FNPT connection, ball valve shut-off valves, and a flood detection sensor with strainer. The manufacturer part number is 3/4 LF919-QT-S-FS. It is part of the Watts RPZ Backflow Preventers product line.

Where to buy the Watts LF919 backflow preventer worldwide?

3G Electric supplies the Watts LF919 reduced pressure zone assembly worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this RPZ backflow preventer.

How to install a Watts LF919 reduced pressure zone assembly?

Install the Watts LF919 in an accessible location with adequate drainage, as the flood detection sensor alerts to discharge. Ensure the FNPT connections are properly sealed and the ball valve shut-offs are oriented for easy operation. Follow local plumbing codes and manufacturer guidelines for backflow preventer installation.

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 watts rpz backflow preventers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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