Watts number 9D backflow preventer with 3/4" female union on inlet and outlet connections and intermediate atmospheric vent. This backflow prevention valve is all brass with stainless steel parts, integral strainer, and rubber discs. It is designed with protection against back-siphoning in continuous pressure applications including process tanks, sterilizers, and low hazard applications, as well as for boiler feed lines to prevent backflow when supply pressure falls below system pressure. Its maximum pressure is 175 psi.

Online Price: $45.46
Regular Price: $55.89

  • SKU: WC1040
  • Ships within 48 hours

Watts number 7 dual check backflow preventer with 1" female union on inlet and 1" IPF outlet connections. This backflow prevention valve is all brass with stainless steel parts and two compact replaceable check modules. It is designed with protection against back-siphoning in residential water supply service and be installed immediately downstream of the water meter.

Online Price: $53.06
Regular Price: $64.60

  • SKU: WC1015
  • 2 In Stock

Watts number N9 1/4" IPF by IPF in-line backflow preventer with atmospheric vent. This backflow prevention valve is all brass with a double check design, which provides protection against back-siphoning in continuous pressure applications. Its maximum pressure is 125 psi.

Online Price: $115.50
Regular Price: $124.39

  • SKU: WC1020
  • Ships within 48 hours

Watts number N9 3/8" IPF by IPF in-line backflow preventer with atmospheric vent. This backflow prevention valve is all brass with a double check design, which provides protection against back-siphoning in continuous pressure applications. Its maximum pressure is 125 psi.

Online Price: $115.50
Regular Price: $124.39

  • SKU: WC1475
  • Ships within 2 weeks

Watts number 709NRS 2-1/2" flanged backflow preventer with a double check valve assembly for non-health, low hazard cross-connections, and continuous pressure applications. It is furnished with ball type test cocks and quarter-turn, full-port bronze ball valves for shut-offs. It is rated for supply pressures up to 175 psi and temperatures of up to 110°F.

Online Price: $2,365.62
Regular Price: $2,911.53

  • SKU: WC1480
  • Ships within 10 days

Watts number 709NRS 3" flanged backflow preventer with a double check valve assembly for non-health, low hazard cross-connections, and continuous pressure applications. It is furnished with ball type test cocks and quarter-turn, full-port bronze ball valves for shut-offs. It is rated for supply pressures up to 175 psi and temperatures of up to 110°F.

Online Price: $2,596.94
Regular Price: $3,196.24

  • SKU: WC1485
  • Ships within 10 days

Watts number 709NRS 4" flanged backflow preventer with a double check valve assembly for non-health, low hazard cross-connections, and continuous pressure applications. It is furnished with ball type test cocks and quarter-turn, full-port bronze ball valves for shut-offs. It is rated for supply pressures up to 175 psi and temperatures of up to 110°F.

Online Price: $2,755.82
Regular Price: $3,391.77

  • SKU: WC1490
  • Ships within 10 days

Watts number 709NRS 6" flanged backflow preventer with a double check valve assembly for non-health, low hazard cross-connections, and continuous pressure applications. It is furnished with ball type test cocks and quarter-turn, full-port bronze ball valves for shut-offs. It is rated for supply pressures up to 175 psi and temperatures of up to 110°F.

Online Price: $4,547.37
Regular Price: $5,596.76

  • SKU: WC1495
  • Ships within 10 days

Watts number 709NRS 8" flanged backflow preventer with a double check valve assembly for non-health, low hazard cross-connections, and continuous pressure applications. It is furnished with ball type test cocks and quarter-turn, full-port bronze ball valves for shut-offs. It is rated for supply pressures up to 175 psi and temperatures of up to 110°F.

Online Price: $9,479.37
Regular Price: $10,573.14

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