Deringer 2 1/2"-4" Model 20/40G 1st and 2nd Check Rubber Rebuild
Fits MODEL20 · MODEL40G Sizes 2 1/2" · 3" · 4"
Check rubber kit for Deringer Model 20 and Model 40G assemblies from 2 1/2 to 4 inch, sold under Deringer part number BFD-1140. One kit carries the rubber for both the first and second checks, and the metal check parts stay in the body.
Doing a full rebuild?See the parts that fit this device
Call (916) 251-7071 or send us a message.
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.