Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

WILKINS RK34-375R Backflow Preventer Repair Kit for Series 375/375ST/375XL - Repair Kits & Parts for Zurn Backflow Preventers
WILKINSRepair Kits & Parts for Zurn Backflow Preventers

WILKINS RK34-375R Backflow Preventer Repair Kit for Series 375/375ST/375XL

The WILKINS Rubber Repair Kit (SKU RK34-375R, MPN RK34-375R) is a repair kit for Zurn backflow preventers, compatible with Series 375, 375ST, and 375XL models. It includes a Second Check Seal Ring and fits valve…

SKU 3G-OTH-427818

Also listed as: RK34375R · RK34 375R

Brand
WILKINS
Item
RK34-375R Backflow Preventer Repair Kit for Series 375/375ST/375XL
Category
Repair Kits & Parts for Zurn Backflow Preventers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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

WILKINS
Manufacturer Part Number
RK34-375R
Type
6AVY0, 375/375ST/375XL, Repair Kit
Includes
Second Check Seal Ring
Compatible Valve Size
1/2 in to 3/4 in
Compatible with Series
375
Compatible with Mfr. Model No.
375XL

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The WILKINS Rubber Repair Kit (SKU RK34-375R, MPN RK34-375R) is a repair kit for Zurn backflow preventers, compatible with Series 375, 375ST, and 375XL models. It includes a Second Check Seal Ring and fits valve sizes from 1/2 in to 3/4 in.

Frequently Asked Questions

What is the WILKINS RK34-375R repair kit used for?

The WILKINS RK34-375R rubber repair kit is used to service Zurn backflow preventers in Series 375, 375ST, and 375XL. It includes a Second Check Seal Ring and fits valve sizes from 1/2 in to 3/4 in, helping maintain backflow prevention in commercial and industrial water systems.

What are the specifications of the WILKINS RK34-375R repair kit?

The WILKINS RK34-375R repair kit (SKU 3G-OTH-427818) is compatible with valve sizes 1/2 in to 3/4 in and fits Series 375, 375ST, and 375XL backflow preventers. It includes a Second Check Seal Ring and is identified by Part No. 1-375 and manufacturer part number RK34-375R.

Where to buy the WILKINS RK34-375R repair kit worldwide?

3G Electric supplies the WILKINS RK34-375R repair kit worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this genuine Zurn-compatible repair kit to your facility, regardless of location.

How to install the WILKINS RK34-375R repair kit?

To install the WILKINS RK34-375R repair kit, first depressurize and isolate the backflow preventer. Remove the valve cover, replace the old seal ring with the included Second Check Seal Ring, and reassemble. Always follow the manufacturer's instructions for your specific Series 375 model to ensure proper sealing.

Used in

Common applications for WILKINS
Commercial water distribution — WILKINS 600XL series pressure reducing valves for regulating supply pressure in multi-story buildings.
Irrigation systems — WILKINS 975XL2 backflow preventers to protect potable water from contamination in agricultural setups.
Industrial process control — WILKINS 375ST reduced pressure principle backflow preventers for cross-connection control in manufacturing plants.
Municipal water treatment — WILKINS low-lead pressure regulators like the 1-600XL3DU for compliance with potable water standards.
HVAC systems — WILKINS 112-NR3XLDULU regulators for maintaining consistent water pressure in heating and cooling loops.
Fire protection systems — WILKINS backflow preventers for backflow prevention in sprinkler and standpipe systems.

WILKINS Products

3G Electric supplies WILKINS repair kits & parts for zurn backflow preventers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Repair kit for Zurn backflow preventers, compatible with Series 375XL and Model 375. Includes second check seal ring. Fits valve sizes 1-1/4 in to 2 in. Suitable for servicing backflow prevention assemblies in water systems
WILKINS
Repair kit for Zurn backflow preventers, compatible with Series 375XL and Model 375. Includes second check seal ring. Fits valve sizes 1-1/4 in to 2 in. Suitable for servicing backflow prevention assemblies in water systems
Repair kit for Zurn backflow preventers, compatible with Series 375XL and Model 4-375A. Includes a seal ring. Fits valve sizes 2-1/2 in to 6 in. Used for maintenance of backflow prevention assemblies in water supply systems
WILKINS
Repair kit for Zurn backflow preventers, compatible with Series 375XL and Model 4-375A. Includes a seal ring. Fits valve sizes 2-1/2 in to 6 in. Used for maintenance of backflow prevention assemblies in water supply systems
Repair kit for Zurn backflow preventers, compatible with 1 in valve sizes, Series 375XL, and Model 375ST. Includes a First Check Seal Ring for replacing worn seals in backflow prevention assemblies
WILKINS
Repair kit for Zurn backflow preventers, compatible with 1 in valve sizes, Series 375XL, and Model 375ST. Includes a First Check Seal Ring for replacing worn seals in backflow prevention assemblies
Repair kit for Zurn backflow preventers, compatible with Series 975XL and Model 34-975XL. Includes relief valve stem. Fits valve sizes 3/4 in to 1 in. Used to service backflow preventers in water supply systems
WILKINS
Repair kit for Zurn backflow preventers, compatible with Series 975XL and Model 34-975XL. Includes relief valve stem. Fits valve sizes 3/4 in to 1 in. Used to service backflow preventers in water supply systems
Repair kit for Zurn backflow preventers, includes relief valve diaphragm. Compatible with valve sizes 1-1/4 in to 2 in, Series 975XL2, and Mfr. Model No. 114-975XL. Used for servicing backflow preventers in water systems
WILKINS
Repair kit for Zurn backflow preventers, includes relief valve diaphragm. Compatible with valve sizes 1-1/4 in to 2 in, Series 975XL2, and Mfr. Model No. 114-975XL. Used for servicing backflow preventers in water systems
This repair kit includes replacement checks for servicing Zurn backflow preventers. Compatible with valve sizes from 1/4 in to 1/2 in, it is designed for use with Series 975XL2 and Model 975XL backflow preventers. Used to restore proper backflow protection in plumbing systems
WILKINS
This repair kit includes replacement checks for servicing Zurn backflow preventers. Compatible with valve sizes from 1/4 in to 1/2 in, it is designed for use with Series 975XL2 and Model 975XL backflow preventers. Used to restore proper backflow protection in plumbing systems

More from WILKINS

View all WILKINS parts
This complete repair kit is designed for servicing Zurn backflow preventers in the 950XL3 series, specifically model 1-950XL3. It includes an O-Ring Cover and is compatible with 1 in valve sizes. Used for maintaining backflow prevention in water systems
WILKINS
This complete repair kit is designed for servicing Zurn backflow preventers in the 950XL3 series, specifically model 1-950XL3. It includes an O-Ring Cover and is compatible with 1 in valve sizes. Used for maintaining backflow prevention in water systems
Repair kit for Zurn backflow preventers in the 950XL3 series. Includes two check seals for a 1 in compatible valve. Compatible with model 114-950XL3 and types 801H80/801H82. Used to restore sealing performance in backflow prevention assemblies
WILKINS
Repair kit for Zurn backflow preventers in the 950XL3 series. Includes two check seals for a 1 in compatible valve. Compatible with model 114-950XL3 and types 801H80/801H82. Used to restore sealing performance in backflow prevention assemblies
Repair kit for Zurn backflow preventers, compatible with Series 350XL and model 1-350XL. Includes O-rings for 1 in valve size. Used to service backflow prevention assemblies in water supply systems
WILKINS
Repair kit for Zurn backflow preventers, compatible with Series 350XL and model 1-350XL. Includes O-rings for 1 in valve size. Used to service backflow prevention assemblies in water supply systems
This repair kit includes a relief valve cover for Zurn backflow preventers. Compatible with Series 975XL3 and Model 34-975XL3, it fits valve sizes from 1/2 in to 1 in. Used in commercial and industrial water systems to maintain backflow prevention assembly integrity
WILKINS
This repair kit includes a relief valve cover for Zurn backflow preventers. Compatible with Series 975XL3 and Model 34-975XL3, it fits valve sizes from 1/2 in to 1 in. Used in commercial and industrial water systems to maintain backflow prevention assembly integrity
Repair kit for Zurn 950XL3 series backflow preventers with 1 in valve size. Includes (2) seat O-rings. Compatible with model 1-950XL3. Used to replace worn seals in commercial and industrial water systems
WILKINS
Repair kit for Zurn 950XL3 series backflow preventers with 1 in valve size. Includes (2) seat O-rings. Compatible with model 1-950XL3. Used to replace worn seals in commercial and industrial water systems
Repair kit for Zurn backflow preventers, compatible with Series 375ASTDA and Model 8-375AST. Includes lubricant. Designed for 10-inch valve size. Suitable for servicing backflow preventers in commercial and industrial water systems
WILKINS
Repair kit for Zurn backflow preventers, compatible with Series 375ASTDA and Model 8-375AST. Includes lubricant. Designed for 10-inch valve size. Suitable for servicing backflow preventers in commercial and industrial water systems
Relief valve repair kit for Zurn backflow preventers. Includes relief valve seat O-ring. Compatible with 2 in valve size, 975XL3 series, and model 2-975XL3. Used to service backflow preventers in commercial water systems
WILKINS
Relief valve repair kit for Zurn backflow preventers. Includes relief valve seat O-ring. Compatible with 2 in valve size, 975XL3 series, and model 2-975XL3. Used to service backflow preventers in commercial water systems
Repair kit for Zurn backflow preventers, compatible with 975XL3 series and model 112-950XL3. Includes a relief valve cover O-ring. For 1-inch valve sizes. Used to service backflow preventers in water systems for cross-connection control
WILKINS
Repair kit for Zurn backflow preventers, compatible with 975XL3 series and model 112-950XL3. Includes a relief valve cover O-ring. For 1-inch valve sizes. Used to service backflow preventers in water systems for cross-connection control