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Watts 009 M3 3/4 inch first check valve repair kit with check assembly and cover O-ring

Watts

Watts 009 M3 3/4 in 1st Check Valve Repair Kit

SKU CH-N3JK-6CQMP

First check valve repair kit for Watts Series 009 M3, includes check assembly and cover O-ring

  • Restores backflow protection with genuine Watts parts
  • Fits Watts Series 009 M3 3/4 in valves precisely
  • Includes check assembly and cover O-ring for complete repair
  • New condition ensures reliable sealing performance
  • California Prop 65 warning included for compliance transparency

First Check Valve Repair Kit

This repair kit fits Watts Series 009 M3 backflow preventers in the three-quarter inch size. It is intended for plumbers and facility managers who need to restore the first check valve to working order. The kit supplies the internal components required for that specific valve position.

Bundled Components

The package includes a complete check assembly and a cover O-ring. Replacing both parts at the same time restores the sealing surface and the moving check mechanism in one step. No additional seals, springs or hardware are supplied with this kit.

Installation Notes

Installation follows the standard procedure for the Series 009 M3 first check valve: isolate the device, relieve pressure, remove the cover, swap the check assembly and the O-ring, then reassemble and test. A common issue is reusing the old cover O-ring, which can leak after the repair. California Proposition 65 warning applies.

How it compares

Measured against everything we stock in Faucet Valves & Replacement Parts, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 62% of the 1,132 comparable items (median $54.99).

Specifications

Product
Brand nameWATTS
Product typeOther

Questions about this item

How often should the check assembly and cover O-ring in this Watts 009 M3 3/4 in kit be replaced?

The check assembly and cover O-ring should be inspected annually and replaced whenever wear, cracking, or loss of elasticity is found during routine backflow preventer testing.

What is the first performance limit reached when this repair kit operates continuously under pressure?

The cover O-ring will reach its sealing limit first if pressure spikes or debris cause extrusion or permanent deformation before the check assembly shows fatigue.

Does the Watts 009 M3 3/4 in kit generate any noise, heat, or extra power draw when the valve runs all day?

No, the kit adds no noise, heat, or power consumption; it simply restores the mechanical sealing function of the existing backflow preventer.

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