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Air Delights Commercial Restroom Products

Wilkins Double Check Assembly

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Model 450 (Sizes 2-1/2" - 10")

Model 450 (Sizes 2-1/2" - 10")

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 450 shall provide protection where a potential health hazard does not exist. Ideal for use where lead-free* valves are required.

  • "N" pattern construction provides small footprint
  • Excellent for retrofit installation in small spaces
  • Compound Check yields very low headloss
SKU Description 10" Price Qty
10-450 10" 10-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $9,766.90
10-450FG 10" 10-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $9,926.64
10-450OSY 10" 10-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $9,948.50
10-450OSYFG 10" 10-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $10,111.17
10-450BGVIC 10" 10-450BGVIC Double Check Valve Assy, Lead-Free, N-Pattern, Grooved BGVIC x Grooved BGVIC $10,710.04
10-450G 10" 10-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $9,926.64
10-450OSYGF 10" 10-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $10,111.17
10-450OSYG 10" 10-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $9,948.55
10-450L 10" 10-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $6,752.33
SKU Repair Kits 10" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $168.43
SKU Description 8" Price Qty
8-450 8" 8-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $5,936.94
8-450FG 8" 8-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $6,033.99
8-450OSY 8" 8-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $6,356.38
8-450MUOSY 8" 8-450MUOSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY, Mueller Gates $7,317.00
8-450MUOSY 8" 8-450MUOSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY, Mueller Gates $7,317.00
8-450OSYFG 8" 8-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $6,356.43
8-450BGVIC 8" 8-450BGVIC Double Check Valve Assy, Lead-Free, N-Pattern, Grooved BGVIC x Grooved BGVIC $7,112.81
8-450G 8" 8-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $6,033.99
8-450OSYGF 8" 8-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $6,460.39
8-450OSYG 8" 8-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $6,356.43
8-450OSYPIG 8" 8-450OSYPIG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved PI $6,356.43
8-450PIBGVICG 8" 8-450PIBGVICG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved PI x Grooved BGVIC $6,786.64
8-450L 8" 8-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $4,586.22
SKU Repair Kits 8" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $168.43
SKU Description 6" Price Qty
6-450LDR 6" 450 L/GV DR $1,931.33
6-450 6" 6-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $3,494.95
6-450FG 6" 6-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $3,495.00
6-450OSY 6" 6-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $3,762.07
6-450OSYFG 6" 6-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $3,762.11
6-450BGVIC 6" 6-450BGVIC Double Check Valve Assy, Lead-Free, N-Pattern, Grooved BGVIC x Grooved BGVIC $3,946.52
6-450GF 6" 6-450GF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Flanged NRS $3,495.00
6-450G 6" 6-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $3,495.00
6-450OSYGF 6" 6-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $3,762.11
6-450OSYG 6" 6-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $3,762.11
6-450L 6" 6-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $2,488.59
SKU Repair Kits 6" Price Qty
RK6-350 6" RK6-350 Repair Kit - 375/475 Checks Only $152.00
SKU Description 4" Price Qty
4-450LDR 4" 375 L/GV DR $1,410.49
4-450 4" 4-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $2,479.41
4-450FG 4" 4-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $2,479.36
4-450OSY 4" 4-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $2,643.97
4-450OSYFG 4" 4-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $2,643.92
4-450PIBGVICFG 4" 4-450PIBGVICFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged PI x Grooved BGVIC $2,725.45
4-450BGVIC 4" 4-450BGVIC Double Check Valve Assy, Lead-Free, N-Pattern, Grooved BGVIC x Grooved BGVIC $2,856.42
4-450GF 4" 4-450GF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Flanged NRS $2,479.36
4-450G 4" 4-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $2,479.36
4-450OSYGF 4" 4-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $2,643.92
4-450OSYG 4" 4-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $2,643.92
4-450OSYPIG 4" 4-450OSYPIG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved PI $2,643.92
4-450PIBGVICG 4" 4-450PIBGVICG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved PI x Grooved BGVIC $2,725.45
4-450PIOSYG 4" 4-450PIOSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved PI x Grooved OSY $2,643.92
4-450L 4" 4-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $1,612.76
SKU Repair Kits 4" Price Qty
RK4-350 4" RK4-350 Repair Kit - 375/475 Checks Only $90.92
SKU Description 3" Price Qty
3-450 3" 3-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $1,850.77
3-450FG 3" 3-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $1,850.83
3-450OSY 3" 3-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $2,230.61
3-450OSYFG 3" 3-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $2,230.71
3-450G 3" 3-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $1,850.83
3-450OSYGF 3" 3-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $2,230.71
3-450OSYG 3" 3-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $2,230.71
3-450L 3" 3-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $1,444.01
SKU Repair Kits 3" Price Qty
RK212-350 3" RK212-350 Repair Kit - 375/475 Checks Only $27.67
SKU Description 2-1/2" Price Qty
212-450 2 1/2" 212-450 Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS $1,759.67
212-450FSC 2 1/2" 212-450FSC Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Flanged NRS, Epoxy Coated Strainer $1,948.37
212-450FG 2 1/2" 212-450FG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged NRS x Grooved NRS $1,779.97
212-450OSY 2 1/2" 212-450OSY Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Flanged OSY $2,126.56
212-450OSYFG 2 1/2" 212-450OSYFG Double Check Valve Assy, Lead-Free, N-Pattern, Flanged OSY x Grooved OSY $2,126.56
212-450G 2 1/2" 212-450G Double Check Valve Assy, Lead-Free, N-Pattern, Grooved NRS x Grooved NRS $1,759.67
212-450OSYGF 2 1/2" 212-450OSYGF Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Flanged OSY $2,126.56
212-450OSYG 2 1/2" 212-450OSYG Double Check Valve Assy, Lead-Free, N-Pattern, Grooved OSY x Grooved OSY $2,126.56
212-450L 2 1/2" 212-450L Double Check Valve Assy, Lead-Free, N-Pattern, Grooved x Grooved, Less Gate Valves $1,444.01
SKU Repair Kits 2-1/2" Price Qty
RK212-350 3" RK212-350 Repair Kit - 375/475 Checks Only $27.67
Documents
Specification Sheet - 2-1/2" & 3" PDF icon
Specification Sheet - 4", 6", 8" & 10" PDF icon
Installation and Maintenance Instructions 8" & 10" PDF icon
Installation and Maintenance Instructions 4" & 6" PDF icon
Installation and Maintenance Instructions 2-1/2" & 3" PDF icon
Repair Parts 2-1/2" & 3" PDF icon
Repair Parts 4" -10" PDF icon


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