Sioux Chief 660-X2 Mini-Rester AA-Size 1/2" PEX Water Hammer Arrester, No-Lead

Sioux Chief 660-X2 Mini-Rester AA-Size 1/2" PEX Water Hammer Arrester, No-Lead

The Sioux Chief 660-X2 Mini-Rester is a 1/2" PEX water hammer arrester built for behind-the-wall rough-in on residential single-fixture supply lines. It is available in F1807 PEX Crimp or F1960 ProPex Tee connection types, so plumbers can match the arrester to their crew's standard PEX joining method without switching product lines. No-Lead construction and compact AA sizing let the 660-X2 absorb the pressure surge created when a fast-closing valve or appliance solenoid stops flow, cushioning the shock before it travels down the PEX branch line and stresses fittings, crimp rings, and joints elsewhere in the system. Manufactured in the United States, this Mini-Rester ships 50 EA per carton for repeat single-fixture rough-in work.

Key Features

• Trade Size: 1/2" connection sized to tie directly into PEX supply lines feeding a single fixture.
• No-Lead Construction: built to a no-lead specification, appropriate for potable water rough-in applications.
• Mini-Rester, AA Size: Sioux Chief's compact Mini-Rester design, sized AA for residential single-fixture installations rather than whole-house branch or main lines.
• Two Connection Options: available as F1807 PEX Crimp or F1960 ProPex Tee, letting plumbers choose the connection type that matches their PEX joining method.
• Shock Absorption: cushions the pressure spike created by fast-closing valves and appliance solenoids to help prevent water hammer noise and repeated stress on PEX joints.
• Compact Behind-the-Wall Profile: the Mini-Rester's small body is sized to fit in tight wall cavities and stub-out locations where a full-size arrester will not fit.
• Point-of-Use Placement: mounts on the PEX branch line ahead of the fixture's stop or appliance connection, inside the wall or below the fixture, reacting to the surge right where it starts.
• Contractor Packaging: supplied 50 EA per carton for distributors and plumbing contractors stocking single-fixture rough-in jobs.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Residential Single-Fixture Water Supply Lines
• Behind-the-Wall PEX Rough-In Plumbing
• New Construction and Remodel Plumbing Projects
• Point-of-Use Shock Absorption Ahead of Supply Stops
• Tight Wall Cavities and Stub-Out Locations Needing a Compact Arrester
• Distributor and Contractor Stock for Repeat Single-Fixture Rough-In Work

Why Sioux Chief?

Sioux Chief builds the Mini-Rester line with no-lead construction and manufactures the 660-X2 in the United States, giving plumbers a compact, single-fixture water hammer arrester they can install directly into 1/2" PEX rough-in without adding bulk behind the wall. Offering both F1807 PEX Crimp and F1960 ProPex Tee connection options across the 660-X2 line, Sioux Chief lets contractors match the arrester to their crew's standard PEX joining method without switching product lines. The AA sizing keeps the 660-X2 scaled to a single fixture, so contractors are not oversizing an arrester meant for a whole-house main onto a lavatory, appliance, or fixture branch line. Packed 50 EA per carton, it is built for plumbers and distributors who need a consistent, repeatable single-fixture arrester for new construction and remodel PEX rough-in work.