Flat Rate Ground Shipping $9.95 Per Order! Call us at: 1-800-440-5556
Air Delights Commercial Restroom Products
Sloan Flushmate Repair Parts
Automatic Metered Air Fresheners
Commercial Restroom Bathroom Entrance Signs
Credit Application

Wilkins Double Check Valve Assembly

SECTION NAVIGATION
Model 350 (Sizes 2-1/2" -12")

Model 350 (Sizes 2-1/2" -12")

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 350 shall provide protection where a potential health hazard does not exist.

Double Check Valve Assembly

  • Short lay length makes replacement easier
  • Available in flanged, grooved, or grooved X flanged
  • Compound Check yields very low headloss
  • Repair Kits listed below
SKU Description 12" Price Qty
12IN-350 12" 12IN-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $12,589.96
12IN-350OSY 12" 12IN-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $12,879.85
12IN-350L 12" 12IN-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $7,652.25
SKU Repair Kits 12" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $168.43
SKU Description 10" Price Qty
10-350 10" 10-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $8,390.94
10-350BSE 10" 10-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $6,640.99
10-350L 10" 10-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $5,800.79
10-350G 10" 10-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $8,390.99
10-350PIOSY 10" 10-350PIOSY Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Flanged OSY $8,546.76
10-350OSYFG 10" 10-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $8,546.76
10-350OSYFSC 10" 10-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FSC Strainer $10,790.81
10-350OSYFS 10" 10-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $10,266.49
10-350OSY 10" 10-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $8,546.76
10-350FG 10" 10-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $8,528.20
10-350FSC 10" 10-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FSC Strainer $10,632.51
10-350FS 10" 10-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $10,108.19
10-350LBSE 10" 10-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves, With RP #1 Check $3,480.96
10-350LBSE-RPCK 10" 10-350LBSE-RPCK Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $3,475.67
10-350OSYG 10" 10-350OSYG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved OSY $8,546.76
SKU Repair Kits 10" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $168.43
SKU Description 8" Price Qty
8-350 8" 8-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $5,661.46
8-350OSYRH 8" 350 W/RT HND GATE VLV $6,818.10
8-350OSYPI 8" 8-350OSYPI Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged PI $6,081.05
8-350OSYFG 8" 8-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $6,081.05
8-350OSYPIFG 8" 8-350OSYPIFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved PI $6,081.05
8-350PIOSY 8" 8-350PIOSY Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Flanged OSY $6,081.05
8-350PIOSYFG 8" 8-350PIOSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Grooved OSY $6,081.05
8-350L 8" 8-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $4,519.35
8-350G 8" 8-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $5,661.46
8-350OSYG 8" 8-350OSYG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved OSY $6,081.05
8-350OSYFS 8" 8-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $7,146.43
8-350OSYFSC 8" 8-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, Epoxy Coated Strainer $7,277.45
8-350OSY 8" 8-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $6,081.05
8-350LBSE-DACHK 8" 350L W/BS10 E W/DA#2CK $3,733.84
8-350LBSE-RPCK 8" 350L W/BS10 E W/RP#1CK $3,663.91
8-350BSE 8" 8-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $5,253.19
8-350LBSE 8" 8-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $3,276.43
8-350FSC 8" 8-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, Epoxy Coated Strainer $6,857.85
8-350FS 8" 8-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $6,719.97
8-350FG 8" 8-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $5,661.46
8-350OSYPIG 8" 8-350OSYPIG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved PI $6,081.05
SKU Repair Kits 8" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $168.43
SKU Description 6" Price Qty
6-350 6" 6-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $3,322.69
6-350LBSE-RPCK 6"350L W/BS10 E W/RP#1CK $1,677.20
6-350PIOSY 6" 6-350PIOSY Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Flanged OSY $3,650.43
6-350LFS 6" 6-350LFS Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, FS Strainer, Less Gate Valves $2,655.96
6-350LFSC 6" 6-350LFSC Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, FSC Strainer, Less Gate Valves $2,819.16
6-350L 6" 6-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $2,390.52
6-350GF 6" 6-350GF Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Flanged NRS $3,322.75
6-350G 6" 6-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $3,322.75
6-350OSYGF 6" 6-350OSYGF Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Flanged OSY $3,650.43
6-350OSYG 6" 6-350OSYG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved OSY $3,650.43
6-350OSYPIG 6" 6-350OSYPIG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved PI $3,650.43
6-350PIOSYG 6" 6-350PIOSYG Double Check Valve, Lead-Free, Flanged Body, Grooved PI x Grooved OSY $3,650.43
6-350OSYPIFG 6" 6-350OSYPIFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved PI $3,650.43
6-350OSYFG 6" 6-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $3,650.43
6-350BSE 6" 6-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $3,036.19
6-350LBSE 6" 6-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $1,578.09
6-350FS 6" 6-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $3,625.00
6-350FSC 6" 6-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FSC Strainer $3,951.44
6-350FG 6" 6-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $3,322.75
6-350OSY 6" 6-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $3,650.48
6-350OSYFSC 6" 6-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, Epoxy Coated Strainer $4,279.12
6-350OSYFS 6" 6-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $3,937.39
6-350OSYPI 6" 6-350OSYPI Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged PI $3,650.48
6-350PIPIG 6" 6-350PIPIG Double Check Valve, Lead-Free, Flanged Body, Grooved PI x Grooved PI $3,582.13
SKU Repair Kits 6" Price Qty
RK6-350 6" RK6-350 Repair Kit - 375/475 Checks Only $152.00
SKU Description 4" Price Qty
4-350 4" 4-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $2,250.99
4-350NRSOSY 4" 350 W/NRSxOSY GV LEAD FREE $2,446.96
4-350OSYPIFG 4" 4-350OSYPIFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved PI $2,642.93
4-350PIOSY 4" 4-350PIOSY Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Flanged OSY $2,642.93
4-350PIOSYFG 4" 4-350PIOSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged PI x Grooved OSY $2,642.93
4-350LFS 4" 4-350LFS Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, FS Strainer, Less Gate Valves $1,697.72
4-350LFSC 4" 4-350LFSC Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, FSC Strainer, Less Gate Valves $1,728.83
4-350L 4" 4-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $1,514.89
4-350GF 4" 4-350GF Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Flanged NRS $2,250.99
4-350G 4" 4-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $2,250.99
4-350OSYGF 4" 4-350OSYGF Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Flanged OSY $2,642.93
4-350OSYPIGF 4" 4-350OSYPIGF Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Flanged PI $2,642.93
4-350OSYG 4" 4-350OSYG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved OSY $2,642.93
4-350OSYPIG 4" 4-350OSYPIG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved PI $2,642.93
4-350PIOSYGF 4" 4-350PIOSYGF Double Check Valve, Lead-Free, Flanged Body, Grooved PI x Flanged OSY $2,642.93
4-350OSYFG 4" 4-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $2,642.93
4-350OSYPI 4" 4-350OSYPI Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged PI $2,642.93
4-350LBSE-RPCK 4"350L W/BS10 E W/RP#1 CK $1,159.00
4-350LBSD 4" 4-350LBSD Double Check Valve, Lead-Free, Flanged Body, British BS10 D Flanged x Flanged $1,005.99
4-350BSE 4" 4-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $2,227.77
4-350LBSE 4" 4-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $1,125.41
4-350FSC 4" 4-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, Epoxy Coated Strainer $2,635.51
4-350FS 4" 4-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $2,463.69
4-350FG 4" 4-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $2,250.99
4-350OSY 4" 4-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $2,642.93
4-350OSYFSC 4" 4-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, Epoxy Coated Strainer $3,027.47
4-350OSYFS 4" 4-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $2,848.30
4-350OSYMU 4" 4-350OSYMU Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, Mueller GV $3,081.72
4-350OSYSB 4" 4-350OSYSB Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, SS Bolts $2,823.08
4-350PIOSYG 4" 4-350PIOSYG Double Check Valve, Lead-Free, Flanged Body, Grooved PI x Grooved OSY $2,642.93
SKU Repair Kits 4" Price Qty
RK4-350 4" RK4-350 Repair Kit - 375/475 Checks Only $90.92
SKU Description 3" Price Qty
3-350 3" 3-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $1,832.20
3-350OSYPIFG 3"350 W/FXF OSY FXG PI GV LEAD FREE $2,136.11
3-350OSYGF 3" 3-350OSYGF Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Flanged OSY $2,136.11
3-350G 3" 3-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $1,832.20
3-350L 3" 3-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $1,107.93
3-350OSYFG 3" 3-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $2,136.11
3-350OSYFSC 3" 3-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FSC Strainer $2,369.48
3-350OSYFS 3" 3-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $2,257.52
3-350OSY 3" 3-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $2,136.11
3-350FG 3" 3-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $1,832.20
3-350NRSPI 3" 3-350NRSPI Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged PI $1,947.00
3-350FSC 3" 3-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FSC Strainer $2,065.68
3-350FS 3" 3-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $1,959.36
3-350LBSE 3" 3-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $735.33
3-350BSE 3" 3-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $1,602.03
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
212-350 2 1/2" 212-350 Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS $1,745.23
212-350OSYPI 2-1/2" 350 W/OSY & PI GV LEAD FREE $1,998.36
212-350G 2 1/2" 212-350G Double Check Valve, Lead-Free, Flanged Body, Grooved NRS x Grooved NRS $1,745.23
212-350L 2 1/2" 212-350L Double Check Valve, Lead-Free, Flanged Body, Flanged x Flanged, Less Gate Valves $1,086.63
212-350OSYFG 2 1/2" 212-350OSYFG Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Grooved OSY $1,998.36
212-350OSYFSC 2 1/2" 212-350OSYFSC Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FSC Strainer $2,187.07
212-350OSYFS 2 1/2" 212-350OSYFS Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY, FS Strainer $2,075.75
212-350OSY 2 1/2" 212-350OSY Double Check Valve, Lead-Free, Flanged Body, Flanged OSY x Flanged OSY $1,998.36
212-350FG 2 1/2" 212-350FG Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Grooved NRS $1,745.23
212-350FSC 2 1/2" 212-350FSC Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FSC Strainer $1,933.83
212-350FS 2 1/2" 212-350FS Double Check Valve, Lead-Free, Flanged Body, Flanged NRS x Flanged NRS, FS Strainer $1,827.28
212-350LBSE 2 1/2" 212-350LBSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged, Less Gate Valves $787.07
212-350BSE 2 1/2" 212-350BSE Double Check Valve, Lead-Free, Flanged Body, British BS10 Flanged x Flanged $1,530.84
212-350OSYG 2 1/2" 212-350OSYG Double Check Valve, Lead-Free, Flanged Body, Grooved OSY x Grooved OSY $1,998.36
SKU Repair Kits 2-1/2" Price Qty
RK212-350 3" RK212-350 Repair Kit - 375/475 Checks Only $27.67
Documents
Specification Sheet PDF icon
Installation and Maintenance Instructions 2-1/2" - 6" PDF icon
Installation and Maintenance Instructions 8" & 10" PDF icon
Repair Parts 2-1/2" & 3" PDF icon
Repair Parts 4" - 12" PDF icon
Videos
Model 350 (2 1/2" & 3") Repair Video YouTube Videos
Model 350 (8" - 12") Repair Video YouTube Videos
Model 350 (4" & 6") Repair Video YouTube Videos


More Info

Reviews

Be the first to write a review for this product!