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Wilkins 700XL 1-inch FNPT union x FNPT dual check valve, cast bronze lead-free body, side view showing union and threaded ends.

Wilkins 700XL Dual Check Valve, 1 in. FNPT Union, Lead-Free

Brand: Zurn Industries, LLC
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$77.96
$58.47
SKU 1UFX1F-700XL

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The Wilkins 700XL Dual Check Valve (model 1UFX1F-700XL) provides reliable backflow protection for low-hazard potable water applications. Designed for inline installation with a union FNPT x FNPT connection, this lead-free valve combines durable materials and compact dimensions to simplify service and reduce system downtime.

  • Nominal size: 1 in. (1 x 1). Union female FNPT x FNPT connections; union configurable on inlet or outlet.
  • Body: ASTM B584 cast bronze, lead-free construction; elastomers Buna-N; seats: Delrin or Noryl depending on size.
  • Rated for 175 PSI maximum working pressure and 180°F maximum temperature; suitable for potable water lines (low hazard).
  • Flow capacity: up to 40 GPM at 15 ft/sec; overall end-to-end length approximately 4-1/2 inches for compact installs.
  • Springs: 300 series stainless steel; horizontal or vertical installation; not field testable — refer to manufacturer guidance.
  • Standards: ASSE 1024, NSF/ANSI 61/372, CSA certified; meets applicable FDA and EPA considerations for potable water.
  • Documentation: specification sheet, installation and maintenance instructions, and repair part guide are available for download.

Choose the Wilkins 700XL when you need a compact, lead-free dual check for routine potable line protection. For installation, maintenance, and parts, follow the included Zurn Wilkins documentation and consult local plumbing codes.

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Frequently Asked Questions

What connections and size does this valve use?
1 in. nominal size with union FNPT x FNPT female threaded connections; union can be fitted on inlet or outlet.
What are the operating pressure and temperature limits?
Rated to 175 PSI maximum working pressure and a 180°F maximum operating temperature.
Is this valve suitable for potable water and standards compliance?
Yes — lead-free cast bronze construction; complies with ASSE 1024 and NSF/ANSI 61/372.
Can the 700XL be field tested or serviced on-site?
Model 700/700XL is not field-testable; consult the Zurn Wilkins installation manual and repair parts guide for servicing.

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