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Wilkins Reduced Pressure Principle Assembly

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Model 375AR (Sizes 2-1/2" - 10")

Model 375AR (Sizes 2-1/2" - 10")

Reduced Pressure Principle Assembly - Replacement

Designed for drop-in replacement of existing longer lay length assemblies without the need for additional spools or spacers, saving 2 to 6 hours of installation labor and up to 2 machine hours per backflow replacement.

  • Designed to replace old, long lay length Reduced Pressure Principle Assemblies
  • Reduces the cost of assembly replacement
  • Wilkins Compound Checks yield low headloss
  • Click here for the Air Gap assemblies
SKU Description 10" Price Qty
10-375AR-A 10" 10-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $13,222.16
10-375AR-B 10" 10-375AR-B Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length B $13,353.19
10-375AR-C 10" 10-375AR-C Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length C $13,483.52
10-375AROSY-A 10" 10-375AROSY-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged OSY x Flanged OSY, Internal Spool Length A $13,421.92
10-375AROSY-B 10" 10-375AROSY-B Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged OSY x Flanged OSY, Internal Spool Length B $13,552.96
10-375AROSY-C 10" 10-375AROSY-C Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged OSY x Flanged OSY, Internal Spool Length C $13,683.24
SKU Repair Kits 10" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $216.26
3711-CU-XL 8"-10" CNTRL ASSY, Lead-Free $1,256.87
RK8-375R 8" RK8-375R Repair Kit - 375/475 Relief Valve, Rubber Only $76.55
RK8-375 8" RK8-375 Repair Kit - 375/475 Relief Valve Complete $236.90
SKU Description 8" Price Qty
8-375AR-B 8" 375A W/GRV SPOOL B LEAD FREE $9,561.22
8-375AROSY-A 8" 375AOSY W/GRV SPOOL A LEAD FREE $10,082.46
8-375AROSY-B 8" 375AOSY W/GRV SPOOL B LEAD FREE $10,180.20
8-375AR-A 8" 8-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $9,463.40
SKU Repair Kits 8" Price Qty
RK8-350 RK8-350 Repair Kit - 375/475 Checks Only $216.26
3711-CU-XL 8"-10" CNTRL ASSY, Lead-Free $1,256.87
RK8-375R 8" RK8-375R Repair Kit - 375/475 Relief Valve, Rubber Only $76.55
RK8-375 8" RK8-375 Repair Kit - 375/475 Relief Valve Complete $236.90
SKU Description 6" Price Qty
6-375AR-B 6" 375A W/GRV SPOOL B LEAD FREE $5,826.58
6-375AROSY-A 6" 375AOSY W/GRV SPOOL A LEAD FREE $6,231.41
6-375AROSY-B 6" 375AOSY W/GRV SPOOL B LEAD FREE $6,310.09
6-375AR-A 6" 6-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $5,747.87
SKU Repair Kits 6" Price Qty
RK6-350 6" RK6-350 Repair Kit - 375/475 Checks Only $195.17
3707-CU-XL Wilkins Relief Valve Assy $1,022.32
RK212-375R 6" RK212-375R Repair Kit - 375/475 Relief Valve, Rubber Only $69.64
RK212-375 6" RK212-375 Repair Kit - 375/475 Relief Valve Complete $100.34
SKU Description 4" Price Qty
4-375AR-B 4" 375A W/GRV SPOOL B LEAD FREE $4,153.27
4-375AROSY-A 4" 375AOSY W/GRV SPOOL A LEAD FREE $4,336.37
4-375AROSY-B 4" 375AOSY W/GRV SPOOL B LEAD FREE $4,392.00
4-375AR-A 4" 4-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $4,097.64
SKU Repair Kits 4" Price Qty
RK4-350 4" RK4-350 Repair Kit - 375/475 Checks Only $116.74
3707-CU-XL Wilkins Relief Valve Assy $1,022.32
RK212-375R 6" RK212-375R Repair Kit - 375/475 Relief Valve, Rubber Only $69.64
RK212-375 6" RK212-375 Repair Kit - 375/475 Relief Valve Complete $100.34
SKU Description 3" Price Qty
3-375AROSY-A 3" 375AOSY W/GRV SPOOL A LEAD FREE $3,473.75
3-375AR-A 3" 3-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $3,068.24
SKU Repair Kits 3" Price Qty
RK4-350 4" RK4-350 Repair Kit - 375/475 Checks Only $116.74
3707-CU-XL Wilkins Relief Valve Assy $1,022.32
RK212-375R 6" RK212-375R Repair Kit - 375/475 Relief Valve, Rubber Only $69.64
RK212-375 6" RK212-375 Repair Kit - 375/475 Relief Valve Complete $100.34
SKU Description 2-1/2" Price Qty
212-375AROSY-A 2-1/2" 375AOSY W/GRV SPOOL A LEAD FREE $3,305.90
212-375AR-A 2 1/2" 212-375AR-A Reduced Pressure Principle Assy, Lead-Free, Grooved Body, Flanged NRS x Flanged NRS, Internal Spool Length A $2,946.83
SKU Repair Kits 2-1/2" Price Qty
RK4-350 4" RK4-350 Repair Kit - 375/475 Checks Only $116.74
3707-CU-XL Wilkins Relief Valve Assy $1,022.32
RK212-375R 6" RK212-375R Repair Kit - 375/475 Relief Valve, Rubber Only $69.64
RK212-375 6" RK212-375 Repair Kit - 375/475 Relief Valve Complete $100.34
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 PDF icon
Videos
Troubleshooting Pressure Relief Valve Discharge Video YouTube Videos
Wilkins 300AR Series Backflow YouTube Videos
Wilkins AR Installation Video YouTube Videos
Model 375 (8" & 10") Repair Video YouTube Videos
Model 375 (2 1/2" & 3") Repair Video YouTube Videos
Model 375 (4" & 6") Repair Video YouTube Videos


More Info

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  • Our Flushmate 503 developed a broken cartridge at 4PM central time. AirDelights is pacific time, so by the time I placed my order it was 2:47 pacific time. They sent the parts by FEDEX next day standard delivery. I had the parts in my hand in St Louis MO at 10:18 AM the next morning. The order was before 3PM so they shipped the same day.

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