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APOLLO Dual Check Valve: 4A, 3/4 in Pipe Size, FNPT x FNPT, 24 gpm Flow Rate, 4.5 in Overall Lg - Potable Water Dual Check Backflow Preventers
APOLLOPotable Water Dual Check Backflow Preventers

APOLLO Dual Check Valve: 4A, 3/4 in Pipe Size, FNPT x FNPT, 24 gpm Flow Rate, 4.5 in Overall Lg

The APOLLO Dual Check Valve: 4A is a potable water dual check backflow preventer with a 3/4 in pipe size and FNPT x FNPT connections. It has a flow rate of 24 gpm and an overall length of 4.5 in, with NPT threading…

SKU 3G-OTH-437178

Brand
APOLLO
Item
Dual Check Valve: 4A, 3/4 in Pipe Size, FNPT x FNPT, 24 gpm Flow Rate, 4.5 in Overall Lg
Category
Potable Water Dual Check Backflow Preventers
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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

APOLLO
Manufacturer Part Number
4ALF3A44A
Type
FNPT x FNPT, NPT
Overall Lg
4.5 in
Pipe Size
3/4 in
Flow Rate
24 gpm
Connection Type
FNPT x FNPT

Technical Documents

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

Product Description

The APOLLO Dual Check Valve: 4A is a potable water dual check backflow preventer with a 3/4 in pipe size and FNPT x FNPT connections. It has a flow rate of 24 gpm and an overall length of 4.5 in, with NPT threading (MPN 4ALF3A44A).

Frequently Asked Questions

What is the APOLLO Dual Check Valve 4A used for?

The APOLLO Dual Check Valve 4A is used to prevent backflow of contaminated water into potable water lines. It is installed in residential, commercial, and industrial plumbing systems to protect drinking water quality, typically at meter or service connections.

What are the specifications of the APOLLO Dual Check Valve 4A?

The APOLLO Dual Check Valve 4A has a 3/4 in pipe size, FNPT x FNPT connections, a flow rate of 24 gpm, and an overall length of 4.5 in. It uses NPT threading and is manufactured by APOLLO under part number 4ALF3A44A.

Where to buy the APOLLO Dual Check Valve 4A worldwide?

3G Electric supplies the APOLLO Dual Check Valve 4A to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this backflow preventer.

How to install the APOLLO Dual Check Valve 4A?

Install the APOLLO Dual Check Valve 4A in a horizontal or vertical position with flow arrow pointing downstream. Use pipe thread sealant on FNPT connections, tighten to 25-35 ft-lb, and test for leaks. Always follow local plumbing codes.

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 potable water dual 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
APOLLO Double Check Valve Assembly: 4A, 3/4 in Pipe Size, FNPT x FNPT, 12.63 in Overall Lg, Bronze (MPN 4ALF104A2F)
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APOLLO Double Check Valve Assembly: 4A, 3/4 in Pipe Size, FNPT x FNPT, 12.63 in Overall Lg, Bronze (MPN 4ALF104A2F)
APOLLO Double Check Valve Assembly: 4A, 2 in Pipe Size, FNPT x FNPT, 20.13 in Overall Lg, Bronze, 4A (MPN 4ALF108A2F)
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APOLLO Double Check Valve Assembly: 4A, 2 in Pipe Size, FNPT x FNPT, 20.13 in Overall Lg, Bronze, 4A (MPN 4ALF108A2F)
APOLLO Double Check Valve Assembly: 4A, 1 in Pipe Size, FNPT x FNPT, 14.63 in Overall Lg, Bronze, 4A (MPN 4ALF105A2F)
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APOLLO Double Check Valve Assembly: 4A, 1 in Pipe Size, FNPT x FNPT, 14.63 in Overall Lg, Bronze, 4A (MPN 4ALF105A2F)
APOLLO Double Check Valve Assembly: 4A, 1 1/4 in Pipe Size, FNPT x FNPT, 17.5 in Overall Lg, Bronze (MPN 4ALF106A2F)
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APOLLO Double Check Valve Assembly: 4A, 1 1/4 in Pipe Size, FNPT x FNPT, 17.5 in Overall Lg, Bronze (MPN 4ALF106A2F)
APOLLO Double Check Valve Assembly: 4A, 1 1/2 in Pipe Size, FNPT x FNPT, 18 in Overall Lg, Bronze (MPN 4ALF107A2)
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APOLLO Double Check Valve Assembly: 4A, 1 1/2 in Pipe Size, FNPT x FNPT, 18 in Overall Lg, Bronze (MPN 4ALF107A2)

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