Wilkins 2 1/2", 3", and 4" 375AST/375ASTDA 1st Check Assembly
Fits 375AST · 375ASTDA Sizes 2 1/2" · 3" · 4"
RK4-375ASTCK1 replaces the first check on 2 1/2, 3 and 4 inch Wilkins 375AST and 375ASTDA reduced pressure assemblies. Check assembly and retainer both come in the package.
Doing a full rebuild?See the parts that fit this device
Call (916) 251-7071 or send us a message.
Wilkins 2 1/2", 3", and 4" 375AST/375ASTDA 1st Check AssemblyPart # RK4-375ASTCK1$531.98In stock
Shipping & returns
Shipping: in-stock parts ship from our Rocklin, CA warehouse, typically within 1–2 business days. The shipping cost shows at checkout.
Pickup: 4487 Pacific St, Suite E, Rocklin, CA.
Returns: see our return policy.
Frequently Asked Questions
How do I know this is the right part?
How do I know this is the right part?
Check the brand, size and model on your device's tag against the details on this page. For backflow repair parts, our Repair Parts Finder lets you pick the brand, size and model and shows the parts listed for that device. Still not sure? Send us a message with what you are working on and we will help you check.
Can I pick up my order instead of having it shipped?
Can I pick up my order instead of having it shipped?
Yes. You can pick up at our shop: 4487 Pacific Street, Unit E, Rocklin, CA 95677, Monday–Friday, 7am–4pm.
Do you offer accounts for contractors?
Do you offer accounts for contractors?
Yes. Approved business customers can buy on net terms and get a customer portal with their invoices and statements. Send us a message to set up an account.