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APOLLO Double Check Valve Backflow Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT - Apollo Double Check Backflow Preventers
APOLLOApollo Double Check Backflow Preventers

APOLLO Double Check Valve Backflow Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT

The APOLLO Double Check Valve Backflow Assembly: 4A is a backflow preventer from Apollo, featuring a 1/2 in pipe size with FNPT x FNPT connections and a ball valve shut-off type. This assembly, identified by…

SKU 3G-OTH-431822

Brand
APOLLO
Item
Double Check Valve Backflow Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT
Category
Apollo Double Check Backflow Preventers
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Technical Specifications

APOLLO
Manufacturer Part Number
4A103A2F
Type
FNPT x FNPT
Overall Lg
10.88 in
Pipe Size
1/2 in
Connection Type
FNPT x FNPT
Shut-Off Valve Type
Ball Valve
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APOLLO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APOLLO Double Check Valve Backflow Assembly: 4A is a backflow preventer from Apollo, featuring a 1/2 in pipe size with FNPT x FNPT connections and a ball valve shut-off type. This assembly, identified by manufacturer part number 4A103A2F, has an overall length of 10.88 inches.

Frequently Asked Questions

What is the APOLLO Double Check Valve Backflow Assembly 4A used for?

The APOLLO Double Check Valve Backflow Assembly 4A prevents contaminated water from flowing backward into potable water lines. It is used in commercial and industrial plumbing systems to protect drinking water supplies from cross-connections, such as in irrigation, boiler feed, or fire sprinkler applications.

What are the specifications of the APOLLO 4A103A2F backflow preventer?

The APOLLO 4A103A2F has a 1/2 in pipe size with FNPT x FNPT connections and a ball valve shut-off type. Its overall length is 10.88 in. This double check valve assembly is designed for backflow prevention in water lines and is manufactured by Apollo under part number 4A103A2F.

Where to buy the APOLLO 4A backflow preventer worldwide?

3G Electric supplies the APOLLO 4A Double Check Valve Backflow Assembly worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order the 4A103A2F or any Apollo backflow prevention product for your region.

How to install the APOLLO double check valve backflow assembly?

Install the APOLLO double check valve assembly in a horizontal or vertical position with flow arrow pointing downstream. Use thread sealant on FNPT connections and ensure ball valves are fully open after installation. Always follow local plumbing codes and test the assembly per manufacturer guidelines to verify proper backflow prevention.

Used in

Common applications for APOLLO
Water supply systems — APOLLO double check valve backflow preventers (Series 4A) for backflow protection in commercial buildings.
HVAC piping — APOLLO bronze ball valves (two-piece, FNPT) for shut-off and isolation in heating and cooling loops.
Irrigation networks — APOLLO double check valve assemblies (bronze, FNPT) to prevent contamination of potable water sources.
Process piping — APOLLO three-piece ball valves (full-port, sweat connections) for maintenance-friendly flow control in industrial lines.
Safety systems — APOLLO spring-return lever ball valves (bronze, FNPT) for fail-safe shut-off in fuel or gas applications.
Plumbing repairs — APOLLO repair kits (complete check kits) for servicing backflow preventers in existing installations.

APOLLO Products

3G Electric supplies APOLLO apollo double check 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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