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APOLLO Double Check Valve Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT, 10.88 in Overall Lg - Apollo Double Check Backflow Preventers
APOLLOApollo Double Check Backflow Preventers

APOLLO Double Check Valve Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT, 10.88 in Overall Lg

The APOLLO Double Check Valve Assembly: 4A is a bronze double check backflow preventer with a 1/2-inch pipe size and FNPT x FNPT connections. It features ball valve shut-offs and has an overall length of 10.88…

SKU 3G-OTH-431821

Brand
APOLLO
Item
Double Check Valve Assembly: 4A, 1/2 in Pipe Size, FNPT x FNPT, 10.88 in Overall Lg
Category
Apollo Double Check Backflow Preventers
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Technical Specifications

APOLLO
Manufacturer Part Number
4ALF103A2F
Type
FNPT x FNPT, Bronze
Overall Lg
10.88 in
Pipe Size
1/2 in
Connection Type
FNPT x FNPT
Shut-Off Valve Type
Ball Valve
View Full Spec Sheet

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

Product Description

The APOLLO Double Check Valve Assembly: 4A is a bronze double check backflow preventer with a 1/2-inch pipe size and FNPT x FNPT connections. It features ball valve shut-offs and has an overall length of 10.88 inches, identified by manufacturer part number 4ALF103A2F.

Frequently Asked Questions

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

The APOLLO Double Check Valve Assembly 4A is a backflow preventer used in commercial and residential plumbing to stop contaminated water from flowing backward into the potable water supply. It is typically installed on low-hazard cross-connections, such as irrigation systems or boiler feed lines, where non-toxic substances are present.

What are the specifications of the APOLLO Double Check Valve Assembly 4A?

The APOLLO Double Check Valve Assembly 4A has a 1/2-inch pipe size with FNPT x FNPT connections and ball valve shut-offs. It is made of bronze, has an overall length of 10.88 inches, and is identified by manufacturer part number 4ALF103A2F. This APOLLO model is designed for reliable backflow prevention in low-hazard applications.

Where to buy the APOLLO Double Check Valve Assembly 4A worldwide?

You can source the APOLLO Double Check Valve Assembly 4A worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this APOLLO backflow preventer.

How to install the APOLLO Double Check Valve Assembly 4A?

Install the APOLLO Double Check Valve Assembly 4A in a horizontal or vertical position with the flow arrow pointing downstream. Use thread sealant on the FNPT connections and ensure the ball valve shut-offs are accessible for testing. Follow local plumbing codes and APOLLO's generic guidelines for backflow preventer installation to ensure proper operation.

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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