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Copper water hammer arrestor, threaded 1 inch connection, cylindrical body with factory-set 60 psi pressure rating

Jay R. Smith Mfg. Co

Jay R. Smith Mfg. Co 520-T-C Water Hammer Arrestor 1 in bathware

SKU CH-29Q7-84MVE

Absorbs pressure surges in 1-inch threaded copper lines, factory-set at 60 psi and rated to 350 psi

  • Prevents pipe hammer with ASSE 1010 certified arrestor
  • Factory-set 60 psi cushion absorbs pressure spikes
  • Rated to 350 psi max for heavy-duty lines
  • Operates from 33 to 250 °F across hot and cold
  • Lead-free copper body meets NSF/ANSI 372 compliance

Product Identity

The Jay R. Smith Mfg. Co 520-T-C is a copper water hammer arrestor designed for 1 inch threaded pipe connections in plumbing systems. It protects piping from pressure surges caused by sudden valve closure in residential and light commercial installations. The unit is factory set at 60 psi and carries ASSE Standard 1010 certification with IAPMO listing.

Pressure and Temperature Limits

The arrestor operates within a temperature range of 33 to 250 degrees Fahrenheit and withstands a maximum working pressure of 350 psi. Its factory pre-charge of 60 psi is calibrated to absorb hydraulic shock in typical supply lines. Compliance with Lead Plumbing Law and NSF/ANSI 372 certification confirms suitability for potable water applications.

Installation Verification

Confirm that the existing piping uses 1 inch threaded connections matching the arrestor's specification. Verify that system pressure does not exceed the 350 psi maximum rating and that water temperature remains within the 33 to 250 degree Fahrenheit range. The 8 3/4 inch overall height and 1 3/8 inch diameter require adequate clearance at the installation point.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 58% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameJAY R. SMITH MFG. CO
Product typeOther

Questions about this item

Which pipe size version of the 520-T-C should I choose for a 1-inch supply line?

The 520-T-C is offered in a single 1-inch pipe size with a threaded connection, so it matches a 1-inch supply line directly.

What does the 60 psi factory-set pressure mean once the arrestor is installed?

The unit is pre-charged to 60 psi, which is the cushion pressure that absorbs shock when valves close in the system.

What does the ASSE 1010 standard cap in practice for this arrestor?

ASSE 1010 certifies the arrestor for water hammer control up to its 350 psi maximum working pressure.

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