Wilkins

Model

375AST

Description
Specification
Parts Breakdown

The Wilkins 375AST is a reduced pressure assembly (RPA). It is available in 2 1/2″-10″ sizes and has been in production since 2011. The body is made of stainless steel. Parts are not interchangeable between the 375/375A and the 375AST.

Spec Sheet

Parts Breakdown

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product
Relief Valve Internal Module

Part #: RK8-375RVCI
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8″ Ring Gasket/Bolt Set

Part #: GSNAG8
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6″ Ring Gasket/Bolt Set

Part #: GSNAG6
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4″ Ring Gasket/Bolt Set

Part #: GSNAG4
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3″ Ring Gasket/Bolt Set

Part #: GSNAG3
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2.5″ Ring Gasket/Bolt Set

Part #: GSNAG2.5
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10″ Ring Gasket/Bolt Set

Part #: GSNAG10
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Relief Valve Internal Module

Part #: RK212-375RVCI
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1st and 2nd Check Rubber Rebuild

Part #: RK8-350
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1st and 2nd Check Rubber Rebuild

Part #: RK6-350
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1st and 2nd Check Rubber Rebuild

Part #: RK6-350
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1st and 2nd Check Rubber Rebuild

Part #: RK4-350
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1st and 2nd Check Rubber Rebuild

Part #: RK4-350
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Test Cock

Part #: 850BVLF-34
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Test Cock

Part #: 850BVLF-12
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10″ 375AST w/ BFG

Part #: 375ASTBG-10
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10″ 375AST w/ OS&Y

Part #: 375ASTY-10
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8″ 375AST w/ BFG

Part #: 375ASTBG-8
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8″ 375AST w/ OS&Y

Part #: 375ASTY-8
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Air Gap

Part #: AG-7
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6″ 375AST w/ BFG

Part #: 375ASTBG-6
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6″ 375AST w/ OS&Y

Part #: 375ASTY-6
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4″ 375AST w/ BFG

Part #: 375ASTBG-4
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4″ 375AST w/ OS&Y

Part #: 375ASTY-4
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3″ 375AST w/ BFG

Part #: 375ASTBG-3
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3″ 375AST w/ OS&Y

Part #: 375ASTY-3
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2 1/2″ 375AST w/ BFG

Part #: 375ASTBG-25
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2 1/2″ 375AST w/ OS&Y

Part #: 375ASTY-25
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Air Gap

Part #: AG-6
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10″ Flange x Groove Adapter

Part #: FP8-10
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10″ Flg Gasket/Bolt Set

Part #: GSFFG10
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8″ Flange x Groove Adapter

Part #: 7010456
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8″ Flexible Grooved Coupling

Part #: GCC-8
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8″ Flg Gasket/Bolt Set

Part #: GSFFG8
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6″ Flange x Groove Adapter

Part #: 7010455
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6″ Flexible Grooved Coupling

Part #: GCC-6
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6″ Flg Gasket/Bolt Set

Part #: GSFFG6
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4″ Flange x Groove Adapter

Part #: 7010453
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4″ Flexible Grooved Coupling

Part #: GCC-4
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4″ Flg Gasket/Bolt Set

Part #: GSFFG4
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3″ Flange x Groove Adapter

Part #: 7010452
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3″ Flexible Grooved Coupling

Part #: GCC-3
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3″ Flg Gasket/Bolt Set

Part #: GSFFG3
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2 1/2″ Flange x Groove Adapter

Part #: 7010451
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2 1/2″ Flexible Grooved Coupling

Part #: GCC-25
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2-1/2″ Flg Gasket/Bolt Set

Part #: GSFFG2.5
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2nd Check Assembly

Part #: RK10-350ASTCK2
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1st Check Assembly

Part #: RK8-375ASTCK1
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Relief Valve Rubber Rebuild w/Spring

Part #: RK8-375
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Relief Valve Cover

Part #: RK8-RV-COVER
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Relief Valve O-Ring

Part #: 142N
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Relief Valve Assembly

Part #: RK8-RV-ASSY
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Relief Valve Internal Module (Assembled)

Part #: RK8-375VT
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Relief Valve Rubber Rebuild

Part #: RK8-375R
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2nd Check Assembly

Part #: RK8-350ASTCK2
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Complete Rubber Rebuild

Part #: RK8-350
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1st Check Assembly

Part #: RK6-375ASTCK1
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2nd Check Retainer (Bag of 2)

Part #: 3510ST-140x2
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2nd Check Assembly

Part #: RK6-350ASTCK2
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1st Check Retainer

Part #: 3510ST-14B
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Complete Rubber Rebuild

Part #: RK6-350
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Relief Valve Hose

Part #: 3710-36
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2nd Check Assembly

Part #: RK4-350ASTCK2
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1st Check Assembly

Part #: RK4-375ASTCK1
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Relief Valve Rubber Rebuild w/Spring

Part #: RK212-375
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product
Relief Valve Hose

Part #: 3709-36
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Relief Valve Cover

Part #: RK212-RV-COVER
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Relief Valve O-Ring

Part #: 032N
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Relief Valve Assembly

Part #: RK212-RV-ASSY
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Relief Valve Internal Module (Assembled)

Part #: RK212-375VT
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Relief Valve Rubber Rebuild

Part #: RK212-375R
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2nd Check Retainer (Bag of 2)

Part #: 3509ST-140x2
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2nd Check Assembly

Part #: RK212-350ASTCK2
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1st Check Retainer

Part #: 3509ST-14B
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Complete Rubber Rebuild

Part #: RK4-350
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Outlet Shutoff Valve

Part #: 850BVLF-34
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Outlet Shutoff Valve

Part #: 850BVLF-12
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Backflow Preventer Repair Manual

Part #: BFCAT
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Wilkins

375AST

Select

Relief Valve Internal Module

8″ Ring Gasket/Bolt Set

6″ Ring Gasket/Bolt Set

4″ Ring Gasket/Bolt Set

3″ Ring Gasket/Bolt Set

2.5″ Ring Gasket/Bolt Set

10″ Ring Gasket/Bolt Set

Relief Valve Internal Module

1st and 2nd Check Rubber Rebuild

1st and 2nd Check Rubber Rebuild

1st and 2nd Check Rubber Rebuild

1st and 2nd Check Rubber Rebuild

1st and 2nd Check Rubber Rebuild

Test Cock

Test Cock

10″ 375AST w/ BFG

10″ 375AST w/ OS&Y

8″ 375AST w/ BFG

8″ 375AST w/ OS&Y

Air Gap

6″ 375AST w/ BFG

6″ 375AST w/ OS&Y

4″ 375AST w/ BFG

4″ 375AST w/ OS&Y

3″ 375AST w/ BFG

3″ 375AST w/ OS&Y

2 1/2″ 375AST w/ BFG

2 1/2″ 375AST w/ OS&Y

Air Gap

10″ Flange x Groove Adapter

10″ Flg Gasket/Bolt Set

8″ Flange x Groove Adapter

8″ Flexible Grooved Coupling

8″ Flg Gasket/Bolt Set

6″ Flange x Groove Adapter

6″ Flexible Grooved Coupling

6″ Flg Gasket/Bolt Set

4″ Flange x Groove Adapter

4″ Flexible Grooved Coupling

4″ Flg Gasket/Bolt Set

3″ Flange x Groove Adapter

3″ Flexible Grooved Coupling

3″ Flg Gasket/Bolt Set

2 1/2″ Flange x Groove Adapter

2 1/2″ Flexible Grooved Coupling

2-1/2″ Flg Gasket/Bolt Set

2nd Check Assembly

1st Check Assembly

Relief Valve Rubber Rebuild w/Spring

Relief Valve Cover

Relief Valve O-Ring

Relief Valve Assembly

Relief Valve Internal Module (Assembled)

Relief Valve Rubber Rebuild

2nd Check Assembly

Complete Rubber Rebuild

1st Check Assembly

2nd Check Retainer (Bag of 2)

2nd Check Assembly

1st Check Retainer

Complete Rubber Rebuild

Relief Valve Hose

2nd Check Assembly

1st Check Assembly

Relief Valve Rubber Rebuild w/Spring

Relief Valve Hose

Relief Valve Cover

Relief Valve O-Ring

Relief Valve Assembly

Relief Valve Internal Module (Assembled)

Relief Valve Rubber Rebuild

2nd Check Retainer (Bag of 2)

2nd Check Assembly

1st Check Retainer

Complete Rubber Rebuild

Outlet Shutoff Valve

Outlet Shutoff Valve