Model # 34UFX34F-700XL

Internet # 203999058

3/4 in. FNPT Inlet and Outlet Lead-Free Dual Check Valve

$34.62 /each

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Product Overview

The Zurn Wilkins Model 700XL dual check is an economical way of providing backflow protection against backpressure and back-siphonage in low hazard applications. The 700XL's tubular design houses two in-line checks and is available in several end connection configurations. Ideal for use where lead-free valves are required.

  • Dual check valve backflow preventer consisting of two independently operated in-line spring-loaded check valves
  • Low lead bronze body construction
  • Corrosion-resistant internal parts
  • 3/4 in. union FNPT inlet connection x 3/4 in. FNPT outlet connection
  • Valve may be installed horizontally or vertically
  • ASSE listed 1024, CSA certified, NSF listed - standard 61, annex G

Info & Guides

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Inlet size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
Product Width (in.) 


Above ground 
Irrigation System Component 
Irrigation Valve Type 
Backflow prevention 
Pressure Rating 
Valve Type 

Warranty / Certifications

Manufacturer Warranty 
All goods sold hereunder are warranted to be free from defects in material and factory workmanship for a period on one year from date of purchase. 

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Customer Questions & Answers

3/4 in. FNPT Inlet and Outlet Lead-Free Dual Check Valve
3/4 in. FNPT Inlet and Outlet Lead-Free Dual Check Valve

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Will this work as replacement for Wilkins Model 750 backflow preventer with markings DCW/ATM Vent B643 on fitting?Is a vent on this? Is vent needed?

This question is from 3/4 in. FNPT Inlet and Outlet Lead-Free Dual Check Valve
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Virginia Beach, VA
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April 24, 2016
Dimensions of the installed fitting are approximately 4-3/4" wide from the end of one union to the end of the other union. The OD of the union is about 1-3/4".
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