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APOLLO Double Check Valve Assembly: 4A, 1 1/2 in Pipe Size, FNPT x FNPT, 18 in Overall Lg - Apollo Double Check Backflow Preventers
APOLLOApollo Double Check Backflow Preventers

APOLLO Double Check Valve Assembly: 4A, 1 1/2 in Pipe Size, FNPT x FNPT, 18 in Overall Lg

The APOLLO Double Check Valve Assembly: 4A is a bronze backflow preventer with a 1 1/2 in pipe size and FNPT x FNPT connections. It features ball valve shut-offs and has an overall length of 18 in. This assembly is…

SKU 3G-OTH-431828

Brand
APOLLO
Item
Double Check Valve Assembly: 4A, 1 1/2 in Pipe Size, FNPT x FNPT, 18 in Overall Lg
Category
Apollo Double Check Backflow Preventers
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Technical Specifications

APOLLO
Manufacturer Part Number
4ALF107A2
Type
FNPT x FNPT, Bronze
Overall Lg
18 in
Pipe Size
1 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 backflow preventer with a 1 1/2 in pipe size and FNPT x FNPT connections. It features ball valve shut-offs and has an overall length of 18 in. This assembly is identified by manufacturer part number 4ALF107A2.

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 industrial water systems to stop contaminated water from flowing backward into the potable supply. It is typically installed on non-hazardous service lines, such as fire sprinkler or irrigation systems, where low-hazard backflow protection is required.

What are the specifications of the APOLLO 4ALF107A2 double check valve?

The APOLLO 4ALF107A2 double check valve assembly has a 1 1/2 in pipe size with FNPT x FNPT connections. It features ball valve shut-offs, a bronze body, and an overall length of 18 in. The manufacturer part number is 4ALF107A2, and it is part of the Apollo 4A series for backflow prevention.

Where to buy the APOLLO 4ALF107A2 double check valve worldwide?

You can source the APOLLO 4ALF107A2 double check valve assembly through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine Apollo backflow preventers to procurement teams internationally.

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 flow direction matching the arrow on the body. Use pipe thread sealant on the FNPT connections and ensure the ball valve shut-offs are fully open after installation. Always test the assembly per local plumbing codes to verify proper backflow prevention 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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