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

Image not available
WILKINSZurn RPZ Backflow Preventers

WILKINS Reduced Pressure Principle Backflow Prev: 375AST, Std Configuration

The WILKINS 375AST Reduced Pressure Principle Backflow Preventer, part of the Zurn RPZ Backflow Preventers product type, is a flange-connected assembly with a 304L Stainless Steel body and an OSY Gate Valve shut-off…

SKU 3G-OTH-440452

Also listed as: 3375ASTOSY · 3 375ASTOSY

Brand
WILKINS
Item
Reduced Pressure Principle Backflow Prev: 375AST, Std Configuration
Category
Zurn 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 — 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

WILKINS
Manufacturer Part Number
3-375ASTOSY
Type
Std Configuration
Body Material
304L Stainless Steel
Connection Type
Flange
Stainless Steel
304L
Shut-Off Valve Type
OSY Gate 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

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

Product Description

The WILKINS 375AST Reduced Pressure Principle Backflow Preventer, part of the Zurn RPZ Backflow Preventers product type, is a flange-connected assembly with a 304L Stainless Steel body and an OSY Gate Valve shut-off valve type. This model, identified by manufacturer part number 3-375ASTOSY, is designed for backflow prevention applications requiring a reduced pressure principle configuration.

Frequently Asked Questions

What is the WILKINS 375AST Reduced Pressure Principle Backflow Preventer used for?

The WILKINS 375AST is used to prevent backflow of contaminated water into potable water supplies in commercial, industrial, and municipal systems. It is a Zurn RPZ backflow preventer with a 304L stainless steel body and flanged connections, suitable for high-hazard cross-connection control applications.

What are the specifications of the WILKINS 375AST backflow preventer?

The WILKINS 375AST is a reduced pressure principle backflow preventer with a 304L stainless steel body, flanged connections, and an OSY gate valve shut-off. It is part of the Zurn RPZ product type and carries manufacturer part number 3-375ASTOSY. The assembly is designed for standard configuration in backflow prevention systems.

Where to buy the WILKINS 375AST backflow preventer worldwide?

3G Electric supplies the WILKINS 375AST Reduced Pressure Principle Backflow Preventer 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 Zurn RPZ backflow preventer model.

How to install a WILKINS 375AST reduced pressure backflow preventer?

Install the WILKINS 375AST in a horizontal or vertical orientation with adequate clearance for testing and maintenance. Ensure flanged connections are properly aligned and gasketed. Follow local plumbing codes and the manufacturer's instructions for the Zurn RPZ assembly. Always test the device after installation to verify proper operation.

Used in

Common applications for WILKINS
Commercial water distribution — WILKINS 600XL series pressure reducing valves for regulating supply pressure in multi-story buildings.
Irrigation systems — WILKINS 975XL2 backflow preventers to protect potable water from contamination in agricultural setups.
Industrial process control — WILKINS 375ST reduced pressure principle backflow preventers for cross-connection control in manufacturing plants.
Municipal water treatment — WILKINS low-lead pressure regulators like the 1-600XL3DU for compliance with potable water standards.
HVAC systems — WILKINS 112-NR3XLDULU regulators for maintaining consistent water pressure in heating and cooling loops.
Fire protection systems — WILKINS backflow preventers for backflow prevention in sprinkler and standpipe systems.

WILKINS Products

3G Electric supplies WILKINS zurn 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
WILKINS
WILKINS
WILKINS Reduced Pressure Principle Backflow Prev: 375AST, Std Configuration, 304L Stainless Steel (MPN 4-375ASTOSY)
WILKINS
WILKINS
WILKINS Reduced Pressure Principle Backflow Prev: 375AST, Std Configuration, 304L Stainless Steel (MPN 3-375AST)
WILKINS
WILKINS
WILKINS Reduced Pressure Principle Backflow Prev: 375AST, Std Configuration, 304L Stainless Steel (MPN 8-375ASTOSY)
WILKINS Pressure Principle Backflow Preventer 21: 375AST, Std Configuration, 304L Stainless Steel (MPN 212-375AST)
WILKINS
WILKINS Pressure Principle Backflow Preventer 21: 375AST, Std Configuration, 304L Stainless Steel (MPN 212-375AST)
WILKINS
WILKINS
Reduced pressure principle backflow preventer with standard configuration. Constructed of stainless steel with female NPT connections and ball valve shut-off valves. Used in water supply systems to prevent backflow contamination
WILKINS
WILKINS
Reduced pressure detector assembly with 304L stainless steel body and flange connections. Includes OSY gate valve shut-off. Used in commercial and industrial water systems to prevent reverse flow, commonly on fire sprinkler systems and high-hazard cross-connections

More from WILKINS

View all WILKINS parts
Reduced pressure zone backflow preventer with standard configuration. Bronze body, 1/2-inch male NPT connections, and ball valve shut-off. Temperature range 33°F to 180°F. Used in plumbing systems to prevent backflow contamination in commercial and industrial applications such as irrigation and fire sprinkler lines
WILKINS
Reduced pressure zone backflow preventer with standard configuration. Bronze body, 1/2-inch male NPT connections, and ball valve shut-off. Temperature range 33°F to 180°F. Used in plumbing systems to prevent backflow contamination in commercial and industrial applications such as irrigation and fire sprinkler lines
The WILKINS 375XL is a reduced pressure zone backflow preventer with a glass-filled nylon body and FNPT connections. It features a ball valve shut-off type and is configured for standard applications. This assembly is used to protect potable water supplies from contamination due to backpressure or backsiphonage in plumbing systems
WILKINS
The WILKINS 375XL is a reduced pressure zone backflow preventer with a glass-filled nylon body and FNPT connections. It features a ball valve shut-off type and is configured for standard applications. This assembly is used to protect potable water supplies from contamination due to backpressure or backsiphonage in plumbing systems
WILKINS 375A reduced pressure zone backflow preventer with flange connections and NRS gate valve shut-off. Constructed of ductile iron in standard configuration. Used in commercial and industrial water systems to prevent backflow in high-hazard cross-connections such as fire sprinkler, irrigation, and boiler feed applications
WILKINS
WILKINS 375A reduced pressure zone backflow preventer with flange connections and NRS gate valve shut-off. Constructed of ductile iron in standard configuration. Used in commercial and industrial water systems to prevent backflow in high-hazard cross-connections such as fire sprinkler, irrigation, and boiler feed applications
The WILKINS 975XL2 is a reduced pressure zone backflow preventer in standard configuration. Constructed of bronze with female NPT connections, it includes ball valve shut-off valves. This assembly is used in water supply systems to prevent backflow from cross-connections
WILKINS
The WILKINS 975XL2 is a reduced pressure zone backflow preventer in standard configuration. Constructed of bronze with female NPT connections, it includes ball valve shut-off valves. This assembly is used in water supply systems to prevent backflow from cross-connections
The WILKINS 975XL is a reduced pressure zone backflow preventer constructed of bronze with FNPT connections. It features ball valve shut-off valves and is configured as a standard assembly. This device is used in plumbing systems to prevent backflow contamination in potable water lines
WILKINS
The WILKINS 975XL is a reduced pressure zone backflow preventer constructed of bronze with FNPT connections. It features ball valve shut-off valves and is configured as a standard assembly. This device is used in plumbing systems to prevent backflow contamination in potable water lines
Reduced pressure zone backflow preventer in standard configuration. Constructed of bronze with 1-inch female NPT connections. Equipped with ball valve shut-offs. Used to protect potable water supplies from backflow contamination in commercial, industrial, and irrigation systems
WILKINS
Reduced pressure zone backflow preventer in standard configuration. Constructed of bronze with 1-inch female NPT connections. Equipped with ball valve shut-offs. Used to protect potable water supplies from backflow contamination in commercial, industrial, and irrigation systems
Reduced pressure zone backflow preventer with bronze body and FNPT connections. Equipped with ball valve shut-off. Used in commercial, industrial, and municipal water systems to protect potable water from backflow contamination
WILKINS
Reduced pressure zone backflow preventer with bronze body and FNPT connections. Equipped with ball valve shut-off. Used in commercial, industrial, and municipal water systems to protect potable water from backflow contamination
WILKINS
WILKINS
Reduced pressure principle backflow preventer with 304L stainless steel body and flanged connections. Equipped with non-rising stem gate valve shut-off. Used in commercial and industrial water systems to prevent backflow from high-hazard cross-connections