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Copper water hammer arrestor with threaded half-inch connection, cylindrical body about seven inches tall and one inch wide

Jay R. Smith Mfg. Co

Jay R. Smith Mfg. Co 520-T-A Water Hammer Arrestor 1/2 in bathware

SKU CH-BK7B-2F90C

Water hammer arrestor with copper body, 1/2 in threaded connection, factory-set at 60 psi and rated to 350 psi

  • TypeOther
  • Controls water hammer with factory-set 60 psi cushion
  • Copper body handles 350 psi maximum pressure
  • Operates from 33 to 250 degrees Fahrenheit
  • Certified to ASSE 1010 and NSF/ANSI 372 standards
  • 1/2 inch threaded connection fits standard plumbing

Smith 520-T-A Arrestor for 1/2 in piping

The Jay R. Smith Mfg. Co 520-T-A water hammer arrestor is built for light commercial and residential plumbing systems that use 1/2 inch threaded copper pipe. It controls pressure spikes caused by quick-closing valves to protect fixtures and reduce noise. The unit is factory set at 60 psi and rated for a maximum pressure of 350 psi.

Copper body with ASSE 1010 and IAPMO certifications

The copper body handles a temperature range from 33 to 250 degrees F and meets ASSE Standard 1010 with File No. 4785. It is IAPMO listed and certified by IAPMO R&T under File No. 8477 to NSF/ANSI 372 for lead plumbing law compliance. These listings confirm the arrestor meets recognized safety and material standards for potable water systems.

Verify 1/2 in threaded connection and pressure range

Before ordering, confirm that the installation point uses a 1/2 inch threaded connection compatible with the arrestor's threaded inlet. Ensure the system operating pressure does not exceed the 350 psi maximum rating and that the water temperature stays within the 33 to 250 degrees F range. The overall height is 6 7/8 in and diameter is 1 1/8 in for space planning.

Highlights

  • Controls water hammer with factory-set 60 psi cushion
  • Copper body handles 350 psi maximum pressure
  • Operates from 33 to 250 degrees Fahrenheit
  • Certified to ASSE 1010 and NSF/ANSI 372 standards
  • 1/2 inch threaded connection fits standard plumbing

Specifications

BrandJAY R. SMITH MFG. CO
TypeOther

Questions about this item

Will the piston or seals inside the 520-T-A arrestor need periodic replacement?

The sealed copper body with factory-set 60 psi charge is designed for maintenance-free life; no user-serviceable parts are specified.

At 350 psi max pressure, will the arrestor hit its limit before my supply lines do?

The 350 psi maximum working pressure exceeds typical residential supply pressure, so the arrestor should not be the first component to reach its limit.

Does the 33 to 250 °F temperature range mean the arrestor adds heat or noise to the line?

The arrestor is a passive copper chamber; it generates no heat or noise and simply absorbs pressure spikes within the rated temperature window.

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