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ZURN WILKINS Air Gap Fitting, AG-9, 4 in NPT, Cast Iron, for 475V Series - Air Gaps
ZURN WILKINSAir Gaps

ZURN WILKINS Air Gap Fitting, AG-9, 4 in NPT, Cast Iron, for 475V Series

The ZURN WILKINS Air Gap Fitting (SKU AG-9, MPN AG-9) is a cast-iron air gap fitting with a 4-inch NPT connection on side 1. It is designed for use with the 475V series Pressure Principle Backflow Preventer.

SKU 3G-OTH-444553

Also listed as: AG9 · AG 9

Brand
ZURN WILKINS
Item
Air Gap Fitting, AG-9, 4 in NPT, Cast Iron, for 475V Series
Category
Air Gaps
Available to Order
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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 WILKINS
Manufacturer Part Number
AG-9
Type
475V, Cast Iron, 4 in Connection Size - Side 1, NPT
Product Type
Air Gap Fitting
Compatible with Series
475V
Compatible Product Type
Pressure Principle Backflow Preventer

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

Product Description

The ZURN WILKINS Air Gap Fitting (SKU AG-9, MPN AG-9) is a cast-iron air gap fitting with a 4-inch NPT connection on side 1. It is designed for use with the 475V series Pressure Principle Backflow Preventer.

Frequently Asked Questions

What is the ZURN WILKINS Air Gap Fitting AG-9 used for?

The ZURN WILKINS Air Gap Fitting AG-9 is used to create a physical air gap between a pressure principle backflow preventer and a drain, preventing backflow contamination. It is designed for use with the 475V series backflow preventer in commercial or industrial water systems.

What are the specifications of the ZURN WILKINS Air Gap Fitting AG-9?

The ZURN WILKINS Air Gap Fitting AG-9 is a cast-iron fitting with a 4-inch NPT connection on side 1. It is compatible with the 475V series Pressure Principle Backflow Preventer. The manufacturer part number is AG-9, and the product type is Air Gap Fitting.

Where to buy the ZURN WILKINS Air Gap Fitting AG-9 worldwide?

You can source the ZURN WILKINS Air Gap Fitting AG-9 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time.

How to install the ZURN WILKINS Air Gap Fitting AG-9?

Install the ZURN WILKINS Air Gap Fitting AG-9 by connecting the 4-inch NPT side to the drain outlet of the 475V series backflow preventer. Ensure the air gap is unobstructed and meets local plumbing codes. Use thread sealant on NPT connections and test for leaks after installation.

Used in

Common applications for ZURN WILKINS
Commercial building water supply — ZURN WILKINS 350XL double check backflow preventer for cross-connection control
Industrial process lines — ZURN WILKINS 3-ZW209 automatic control valve for pressure regulation
Municipal irrigation systems — ZURN WILKINS 1-710 pressure vacuum breaker for backflow prevention
Potable water distribution — ZURN WILKINS 34-20XLDULU water pressure regulator for reducing inlet pressure
Fire protection systems — ZURN WILKINS 950XLTDA reduced-pressure zone backflow detector for high-hazard applications
HVAC makeup water — ZURN WILKINS 212-500XLFC flanged pressure reducing valve for boiler feed control

ZURN WILKINS Products

3G Electric supplies ZURN WILKINS air gaps. 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
Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 4 in FNPT x 4 in MNPT threaded male-to-female NPT connections. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit runs and drain condensation in industrial environments
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Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 4 in FNPT x 4 in MNPT threaded male-to-female NPT connections. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit runs and drain condensation in industrial environments
Iron vertical sealing fitting with drain, 1-1/4 in FNPT x 1-1/4 MNPT threaded connection, 5-1/16 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used in conduit systems to prevent gas or vapor passage and drain accumulated moisture
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Iron vertical sealing fitting with drain, 1-1/4 in FNPT x 1-1/4 MNPT threaded connection, 5-1/16 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used in conduit systems to prevent gas or vapor passage and drain accumulated moisture
Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 3 in FNPT x 3 in MNPT threaded male-to-female NPT connections, 8 1/2 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit and drain accumulated moisture
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Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 3 in FNPT x 3 in MNPT threaded male-to-female NPT connections, 8 1/2 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit and drain accumulated moisture
Iron vertical sealing fitting with drain for 25% fill applications. Features 1 in FNPT x 1 in MNPT threaded ends with NPT threads, 4 5/16 in overall length. Rated for Class III hazardous locations. Complies with CSA C22.2 No 30. Used to seal conduit systems and drain moisture in industrial environments
APPLETON ELECTRIC
Iron vertical sealing fitting with drain for 25% fill applications. Features 1 in FNPT x 1 in MNPT threaded ends with NPT threads, 4 5/16 in overall length. Rated for Class III hazardous locations. Complies with CSA C22.2 No 30. Used to seal conduit systems and drain moisture in industrial environments
Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 3/4 in FNPT x 3/4 in MNPT threaded connections, male to female, with 3 11/16 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit against gas or vapor passage while allowing condensate drainage
APPLETON ELECTRIC
Iron vertical sealing fitting with drain for 25% fill conduit systems. Features 3/4 in FNPT x 3/4 in MNPT threaded connections, male to female, with 3 11/16 in overall length. UL 886 listed for Class I, Division 1 and 2, Groups C and D hazardous locations. Used to seal conduit against gas or vapor passage while allowing condensate drainage
Iron vertical sealing fitting with drain, 4 in trade size, female NPT threaded ends (4 in FNPT x 4 in FNPT), overall length 9 3/4 in. Rated for Class II, Division 1 and 2, Groups E, F, G hazardous locations per UL 886. Used in conduit systems to seal against passage of gases, vapors, or dust while allowing moisture drainage
APPLETON ELECTRIC
Iron vertical sealing fitting with drain, 4 in trade size, female NPT threaded ends (4 in FNPT x 4 in FNPT), overall length 9 3/4 in. Rated for Class II, Division 1 and 2, Groups E, F, G hazardous locations per UL 886. Used in conduit systems to seal against passage of gases, vapors, or dust while allowing moisture drainage

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