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

3G Electric
ZURN 350AST Double Check Backflow Preventer - Zurn Double Check Backflow Preventers
ZURNZurn Double Check Backflow Preventers

ZURN 350AST Double Check Backflow Preventer

<p>The ZURN 350AST Double Check Backflow Preventer is a robust, 6-inch flange x flange assembly designed for high-capacity water systems. Featuring an NRS (Non-Rising Stem) gate valve for shut-off, this unit measures…

SKU 3G-OTH-439817

Also listed as: 6350AST · 6 350AST

Brand
ZURN
Item
350AST Double Check Backflow Preventer
Part Number
6-350AST
Category
Zurn Double Check Backflow Preventers
Available to Order
Also known as:6-350ASTZURN
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

ZURN
Manufacturer Part Number
6-350AST
Type
Flange x Flange
Overall Lg
43.5 in
Pipe Size
6 in
Connection Type
Flange x Flange
Shut-Off Valve Type
NRS 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

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

Product Description

<p>The ZURN 350AST Double Check Backflow Preventer is a robust, 6-inch flange x flange assembly designed for high-capacity water systems. Featuring an NRS (Non-Rising Stem) gate valve for shut-off, this unit measures 43.5 inches in overall length and is engineered for reliable backflow prevention in commercial and industrial applications. Its flanged connections ensure secure, leak-tight installation.</p><p>Ideal for use in water mains, fire protection systems, and industrial process lines, the 350AST meets the demands of Singapore's rigorous building standards. As a trusted supplier, 3G Electric offers this unit with SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What are the key specifications of the ZURN 350AST backflow preventer?

The ZURN 350AST is a 6-inch double check backflow preventer with flange x flange connections. It has an overall length of 43.5 inches and comes with an NRS (Non-Rising Stem) gate valve for shut-off. The manufacturer part number is 6-350AST.

Can I get a quote in SGD and what are the delivery options for Singapore?

Yes, 3G Electric provides quotes in SGD upon request. For Singapore buyers, GST is handled accordingly. We offer fast delivery across Singapore and Southeast Asia, ensuring timely receipt of your order.

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
Not sure this is the right part? Photo-identify it

ZURN Products

3G Electric supplies ZURN zurn double check 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 ZURN

View all ZURN parts
ZURN
ZURN
The ZURN 8-350 is an 8-inch double check backflow preventer with flange x flange connections and NRS gate valve shut-off valves. It has an overall length of 60.88 inches. This device is used in commercial and industrial water systems to prevent backflow in non-health-hazard cross-connections, such as irrigation, fire sprinkler, and boiler feed lines
ZURN
ZURN
Double check backflow preventer for non-health-hazard applications such as irrigation, fire sprinkler systems, and water mains. Features 10 in pipe size, groove x groove connections, NRS gate valve shut-off, EPDM seals, temperature range 33°F to 140°F, overall length 64.63 in
ZURN
ZURN
Double check backflow preventer for non-health-hazard cross-connections in water systems. 8-inch pipe size with Groove x Groove connections and NRS gate valve shut-offs. EPDM seals, temperature range 33°F to 140°F. Overall length 62 inches
ZURN
ZURN
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
ZURN
ZURN
Double check backflow preventer with 10 in pipe size, flange x flange connections, and NRS gate valve shut-off valves. Overall length 63.88 in. Used in commercial and industrial water systems to prevent backflow of contaminated water into potable supply
ZURN
ZURN
Double check backflow preventer for water lines, with 2 1/2 in pipe size and groove x groove connections. Features NRS gate valve shut-off and operates in temperatures from 33°F to 140°F. Overall length is 35.13 in

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first