Industrial Valves

Backflow Preventer Accessories

Find premium backflow preventer accessories at ValveMan to keep your system running safely and efficiently. We supply a wide variety of components, including air gaps, flood sensors, test cocks, and relief valve parts that help ensure compliance and performance across multiple applications. Whether you are upgrading an existing installation or performing scheduled maintenance, our accessories are manufactured from durable materials built to withstand demanding conditions. ValveMan’s selection supports leading backflow preventer brands and includes replacement parts suitable for both commercial and industrial systems. Our knowledgeable team can assist with product selection to ensure compatibility with your current setup. Explore our online catalog to find the parts you need, learn more about available specifications, and place your order for quick delivery.

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All Backflow Preventors Accessories

31 products
SKU: Watts-AIRGAP
2 sizes available
Watts Composite Airgap Series
$104.00Starting at $72.99
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SKU: AIRGAP-P-1
1/2 to 1"
Watts AIRGAP-P-1, Composite Air Gap for 1/2 IN 009, 3/4 IN 009M2/M3, 1/2 to 1 IN 995, and 3/4 to 1 IN 919 Series
$104.00$72.99
SKU: Watts-909-EL
1/2" – 1-1/4" Available
Watts 909-EL Series- Vent Elbows
$167.50Starting at $102.99
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SKU: Watts-909AG
2-1/2-10" – 8-10" Available
Watts Airgap Series
$525.00Starting at $179.99
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SKU: 909ELA
1/2"
Watts 909ELA- Vent Elbows
$167.50$102.99
SKU: 909AGK
4-10"
Watts 909AGK, Air Gap for 4 to 6 IN 909 and 8 to 10 IN 909M1 Series
$1,027.00$315.99
SKU: 909ELF
1-1/4"
Watts 909ELF- Vent Elbows
$348.00$199.99
SKU: AIRGAP-P-2
3/4 to 2"
Watts AIRGAP-P-2, Composite Air Gap for 3/4 to 1 IN 009/909, 1 to 1 1/2 IN 009M2, 1 1/4 to 2 IN 995, and 1 1/4 to 2 IN 919 Series
$174.50$121.99
SKU: 957-AG
2-1/2-10"
Watts 957-AG, Air Gap for 2 1/2 to 10 IN 957 Series
$678.50$229.99
SKU: 909AGM
8-10"
Watts 909AGM, Air Gap for 8 to 10 IN 909 Series
$1,027.00$522.99
SKU: 909AGF
1-1/4 to 3"
Watts 909AGF, Air Gap for 1 1/4 to 3 IN 009/909, 1 1/4 to 2 IN 009M1, and 2 IN 009M2 Series
$525.00$281.99
SKU: 909ELC
3/4"
Watts 909ELC- Vent Elbows
$182.50$104.99
SKU: 909ELH-VERTICAL
1-1/4"
Watts 909ELH-VERTICAL- Vent Elbows
$1,038.00$681.99
SKU: FP-RFK-BF-BMS-CFS 2-1/2-3
2-1/2"
Watts FP-RFK-BF-BMS-CFS 2-1/2-3, BMS Flood Sensor Retrofit Connection Kit for LF909 Large Sizes 2 1/2 to 3 IN
$30.25$21.99
SKU: FP-BF-CFS_2-1/2-10
2-1/2"
Watts FP-BF-CFS_2-1/2-10, Cellular Flood Sensor Connection Kit
$2,393.00$604.99
SKU: FP-BF-BMS_2-1/2-10
2-1/2"
Watts FP-BF-BMS_2-1/2-10, BMS Flood Sensor Connection Kit
$957.00$402.99
SKU: FP-RFK-BF-BMS-CFS 4-10
Watts FP-RFK-BF-BMS-CFS 4-10, BMS Flood Sensor Retrofit Connection Kit for LF909 Large Sizes 4 to 10 IN
$73.00$50.99
SKU: FP-RFK-BF-CFS 2-1/2-3
2-1/2"
Watts FP-RFK-BF-CFS 2-1/2-3, Cellular Flood Sensor Retrofit Connection Kit for LF909 Large Sizes 2 1/2 to 3 IN
Contact for Pricing
Contact for Pricing
SKU: FP-RFK-BF-BMS-CFS 1/2-3/4
Watts FP-RFK-BF-BMS-CFS 1/2-3/4, BMS Flood Sensor Retrofit Connection Kit for 009, LF009, LFU009, SS009, U009 Sizes 1/2 to 3/4 IN
$22.00$15.99
SKU: FP-RFK-BF-CFS 4-10
Watts FP-RFK-BF-CFS 4-10, Cellular Flood Sensor Retrofit Connection Kit for LF909 Large Sizes 4 to 10 IN
$2,393.00$604.99
SKU: FP-RFK-BF-BMS-CFS-2
Watts FP-RFK-BF-BMS-CFS-2, BMS Flood Sensor Retrofit Connection Kit for 009, LFU009, SS009, U009 Size 2 IN, for LF009 Sizes 2 to 3 IN, for LF909 Sizes 1 1/4 to 2 IN
$30.25$21.99
SKU: FP-BF-BMS-1/2-2
Watts FP-BF-BMS-1/2-2, BMS Flood Sensor Connection Kit for 009, LFU009, SS009, U009 Sizes 1/2 to 2 IN, for LF009 Sizes 2 to 3 IN, for LF909 Small Sizes 3/4 to 2 IN.
$631.00$402.99
SKU: FP-RFK-BF-CFS-1/2-3/4
Watts FP-RFK-BF-CFS-1/2-3/4, Cellular Flood Sensor Retrofit Connection Kit for 009, LF009, LFU009, SS009, U009, Sizes 1/2 to 3/4 IN
Contact for Pricing
Contact for Pricing
SKU: FP-RFK-BF-BMS-CFS-1-11/2
Watts FP-RFK-BF-BMS-CFS-1-11/2, BMS Flood Sensor Retrofit Connection Kit for 009, LF009, LFU009, SS009, U009 Sizes 1 to 1 1/2 IN, for LF909 Sizes 3/4 to 1 IN
$631.00$402.99
31+
Products Available
All 50
States Served
Net 30
Terms Available
60 Years
Valve Expertise

Why Buy Backflow Preventors Accessories From ValveMan?

Authorized Distributor Since 1965
We are an authorized distributor — not a grey market reseller. Every Backflow Preventors Accessories product ships new, with the documentation your purchasing department needs — and whatever warranty the manufacturer offers is passed through to you in full.
Expedited Options + Net 30 Terms
In a hurry? Call 888-825-8800 — depending on the item we may be able to expedite your order, and we'll tell you what's realistic. Qualified buyers can apply for Net 30 terms — ideal for MRO, OEM, and project purchasing.
Technical Support from Valve Experts
Our team has 60+ years of valve product knowledge. Call 888-825-8800 or start a chat — we'll help you select the right Backflow Preventors Accessories product for your application, pressure class, and end connection.
Need a volume quote or custom order?
Our B2B team responds within 2 hours on business days. Exton, PA — Trusted Since 1965.
888-825-8800