Protect your copper water lines from the jarring impact of water hammer with the Sioux Chief MiniRester 3/8 in. Compression x 3/8 in. D Compression Copper Water Hammer Arrester. Designed for 3/8 in copper supply lines, this lead-free copper device uses compression-to-compression ends, letting you install quickly and solder-free. It’s a compact, dependable solution built to keep sinks, dishwashers, and drinking water lines steady and quiet.
Why this matters
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Effective water hammer protection absorbs the surge when valves shut off, reducing banging noises and protecting valves, fittings, and fixtures from stress.
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Lead-free copper body delivers durable, corrosion-resistant performance in residential plumbing.
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3/8 in to 3/8 in compression connections make it ideal for tight spaces under sinks and behind appliances without soldering.
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Compact design fits in limited spaces where a traditional arrestor wouldn’t.
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High compatibility specifically designed for copper piping, ensuring a reliable seal with standard compression fittings.
Ideal for
- Under-sink installations for kitchens and bathrooms where quick shutoffs cause pressure spikes
- Connections to dishwashers, dishwashers’ supply lines, and washing machines that can generate water hammer
- Small-diameter copper runs where space is at a premium but shock absorption is still essential
Installation at a glance
- Shut off the water supply and relieve pressure.
- Cut the copper pipe cleanly and deburr the interior edge.
- Slide the compression nut and ferrule onto the pipe, then insert the pipe into the arrester end until seated.
- Tighten the compression nut with a wrench until snug—avoid overtightening to prevent deformation of the ferrule.
- Restore water supply and check for leaks; run water to prime the arrestor as part of regular use.
Key specifications
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Product type: Water Hammer Arrester
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Brand / Series: Sioux Chief miniRester
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End connections: 3/8 in compression to 3/8 in compression
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Material: Copper (lead-free)
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Maximum working pressure: 250 psi
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Packaged as: Clamshell
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Compatible pipe material: Copper
Built to last, easy to use
The MiniRester line is crafted for reliability in home plumbing. This 3/8 in compression x 3/8 in compression copper water hammer arrester is a focused solution for small-diameter runs where water hammer is most noticeable. By choosing a lead-free copper body, you’re opting for a durable, corrosion-resistant component that stands up to daily use in hot and cold water lines alike. If you’re upgrading a kitchen faucet, replacing a valve, or simply tidying a cramped under-sink area, this arrestor provides a straightforward, tool-friendly installation that improves comfort and longevity without the guesswork.
