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ZURN 4-375ASTDA Reduced-Pressure Zone Backflow Detector - Zurn Reduced-Pressure Zone Backflow Detectors
ZURNZurn Reduced-Pressure Zone Backflow Detectors

ZURN 4-375ASTDA Reduced-Pressure Zone Backflow Detector

The ZURN 375ASTDA is a 4-inch reduced-pressure zone backflow detector with flange connections and an OSY gate valve shut-off. This Zurn model (MPN 4-375ASTDA) features a stainless steel body and is designed for…

SKU 3G-OTH-440274

Also listed as: 4375ASTDA · 4 375ASTDA

Brand
ZURN
Item
4-375ASTDA Reduced-Pressure Zone Backflow Detector
Category
Zurn Reduced-Pressure Zone Backflow Detectors
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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

ZURN
Manufacturer Part Number
4-375ASTDA
Type
Flange, Stainless Steel
Pipe Size
4 in
Connection Type
Flange
Shut-Off Valve Type
OSY Gate Valve

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

Product Description

The ZURN 375ASTDA is a 4-inch reduced-pressure zone backflow detector with flange connections and an OSY gate valve shut-off. This Zurn model (MPN 4-375ASTDA) features a stainless steel body and is designed for backflow prevention in industrial water systems.

Frequently Asked Questions

What is the ZURN 4-375ASTDA reduced-pressure zone backflow detector used for?

The ZURN 4-375ASTDA is a 4-inch reduced-pressure zone backflow detector used to prevent reverse water flow in industrial water systems. It protects potable water supplies from contamination by detecting and stopping backflow, making it essential for commercial, municipal, and industrial applications where cross-connections exist.

What are the specifications of the ZURN 375ASTDA backflow preventer?

The ZURN 375ASTDA has a 4-inch pipe size with flange connections and a stainless steel body. It includes an OSY gate valve shut-off type. The manufacturer part number is 4-375ASTDA. This reduced-pressure zone backflow detector is designed for high-hazard backflow prevention in industrial water systems.

Where to buy the ZURN 4-375ASTDA backflow preventer worldwide?

You can source the ZURN 4-375ASTDA backflow preventer through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this Zurn model for your industrial water system needs.

How to install a ZURN reduced-pressure zone backflow detector?

Install the ZURN reduced-pressure zone backflow detector in a horizontal position with adequate clearance for testing and maintenance. Ensure flange connections are properly aligned and gasketed. Follow local plumbing codes and manufacturer guidelines. Always install test cocks and a relief valve drain line per code requirements for safe operation.

Used in

Common applications for ZURN
Commercial restrooms — ZURN AquaVantage® automatic flush valves (ZER6000AV series) for water-efficient toilet flushing
Institutional kitchens — ZURN cast iron floor drains (ZN415 series) for heavy-duty drainage in food preparation areas
Industrial washdown areas — ZURN height-adjustable PVC floor drains (EZ1 series) for chemical-resistant drainage
Hospital patient rooms — ZURN dome strainers (P1910 series) for floor sink drainage in sanitary environments
Office building maintenance — ZURN chrome-plated brass P-traps (ZR365B-PC) for sink trap replacements
Urinal retrofit projects — ZURN ZTR sensor flush valve retrofit kits (ZTR6203 series) for upgrading manual urinal flush valves

ZURN Products

3G Electric supplies ZURN zurn reduced-pressure zone backflow detectors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Reduced-pressure zone backflow detector with 2 in FNPT connections, bronze body, and OSY gate valve shut-off. Designed for water media to prevent backflow in commercial water systems, including fire sprinkler lines and high-hazard cross-connections
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Reduced-pressure zone backflow detector with 2 in FNPT connections, bronze body, and OSY gate valve shut-off. Designed for water media to prevent backflow in commercial water systems, including fire sprinkler lines and high-hazard cross-connections
Reduced-pressure zone backflow detector for water media. Bronze body with 3/4 in male NPT (MNPT) connections. Used to prevent backflow contamination in potable water systems, typically installed in commercial and industrial plumbing, irrigation, and fire sprinkler lines
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Reduced-pressure zone backflow detector for water media. Bronze body with 3/4 in male NPT (MNPT) connections. Used to prevent backflow contamination in potable water systems, typically installed in commercial and industrial plumbing, irrigation, and fire sprinkler lines
Double check backflow preventer with 6-inch pipe size and flange x flange connections. Features NRS gate valve shut-off and overall length of 43.5 inches. Used in commercial and industrial water systems to prevent reverse flow contamination in fire sprinkler, irrigation, and process water applications
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Double check backflow preventer with 6-inch pipe size and flange x flange connections. Features NRS gate valve shut-off and overall length of 43.5 inches. Used in commercial and industrial water systems to prevent reverse flow contamination in fire sprinkler, irrigation, and process water applications
Double check backflow preventer with 3-inch pipe size, flange x flange connections, and NRS gate valve shut-off. Overall length 32.88 inches. Used in cross-connections to prevent backflow of contaminated water into potable water supplies, such as in irrigation, fire sprinkler, and process water lines
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Double check backflow preventer with 3-inch pipe size, flange x flange connections, and NRS gate valve shut-off. Overall length 32.88 inches. Used in cross-connections to prevent backflow of contaminated water into potable water supplies, such as in irrigation, fire sprinkler, and process water lines
Double check backflow preventer with flange x flange connections and NRS gate valve shut-off valves. Pipe size 4 in, overall length 34.88 in. Used in commercial and industrial water systems to prevent reverse flow in non-health-hazard cross-connections such as fire sprinkler systems and irrigation lines
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Double check backflow preventer with flange x flange connections and NRS gate valve shut-off valves. Pipe size 4 in, overall length 34.88 in. Used in commercial and industrial water systems to prevent reverse flow in non-health-hazard cross-connections such as fire sprinkler systems and irrigation lines
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Double check backflow preventer with 10-inch pipe size, flange x flange connections, and NRS gate valve shut-offs. Overall length 55.75 inches. Used in commercial and industrial water systems to prevent reverse flow of contaminated water into potable supply, commonly installed in fire sprinkler, irrigation, and high-hazard plumbing applications

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Reduced-pressure zone backflow detector assembly with 6-inch pipe size and flange connections. Constructed of stainless steel with an outside stem and yoke (OSY) gate valve shut-off. Used in commercial water systems to prevent backflow contamination in potable water supplies
This ZURN reduced-pressure zone backflow detector is a 6-inch flanged assembly with a ductile iron body. It includes an OSY gate valve for shut-off. Used in commercial and industrial water systems to prevent reverse flow contamination, it is suitable for high-hazard cross-connections and fire sprinkler systems
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This ZURN reduced-pressure zone backflow detector is a 6-inch flanged assembly with a ductile iron body. It includes an OSY gate valve for shut-off. Used in commercial and industrial water systems to prevent reverse flow contamination, it is suitable for high-hazard cross-connections and fire sprinkler systems
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This reduced-pressure zone backflow detector is designed for commercial and industrial water systems to prevent backflow of contaminated water into the potable supply. It features a 4-inch pipe size with flange connections and an OSY gate valve shut-off valve. The body is constructed of stainless steel, suitable for high-hazard cross-connections and fire sprinkler systems
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Reduced-pressure zone backflow detector with 8-inch pipe size and flange connections. Constructed with stainless steel body and equipped with OSY gate valve shut-off. Used in commercial, industrial, and municipal water systems to prevent backflow of contaminated water into potable supplies
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Reduced-pressure zone backflow detector assembly with flange connections and OSY gate valve shut-off. Constructed of ductile iron for water distribution systems requiring backflow prevention at cross-connections