ARI1 1/2"Complete assembly

1.5" ARI RP501

Part #RP501-15
Device details
ARI RP501
Sizes 1 1/2"
Part #RP501-15

A 1 1/2 inch reduced pressure assembly for potable-water service: the ARI RP501, part number RP501-15, with composite ball valves as shutoffs. Its two check valves are independent, spring loaded and capsulated, and the relief valve works off the reduced pressure zone between them. ARI makes the body from plastic thermal resin and uses stainless steel for the screws and springs. Ends are NPT threaded, and servicing needs no special tools. Applications ARI names include irrigation systems, water handling and potable water lines.

Pricing by quote
How it works

Add it to a quote. We confirm price, stock and shipping, then email you an estimate. No charge until you approve.

Ships from Rocklin, CA or pick up at our shop.
PDFManufacturer spec sheetARI · dimensions and approvals
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Questions about fit?

Call (916) 251-7071 or send us a message.

1.5" ARI RP501Part # RP501-15Pricing by quote
Pricing by quote
How quotes work
  • Add this assembly to your quote.
  • Send the quote with your details.
  • We email an estimate with price, lead time and shipping.
  • Approve it to order. No charge until you do.
Shipping & returns

Your estimate shows the shipping cost or pickup option before you approve anything.

Pickup: 4487 Pacific St, Suite E, Rocklin, CA.

Returns: see our return policy.

Frequently Asked Questions

How do I find repair parts for this assembly?

Use our Repair Parts Finder: pick the brand, size and model of the assembly to see the repair parts listed for it. Not sure? Send us a message with the brand, size and model from the assembly's tag.

Why does this item say “Request a quote”?

Some items are sold by quote, such as larger sizes, special orders and items that need special shipping. Add the item to your quote and send your details. We confirm availability, shipping and price, then email you an estimate to approve. Nothing is charged until you approve it.

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?

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.

Authorized dealerWatts, Febco, Wilkins, Apollo, Ames, Deringer
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1,000+ parts in stockReady to ship or pick up
Trusted by water districtsAnd testers across California