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Brass tempering valve with compression fittings, compact square body

Acorn

Acorn ST70CP-38 Tempering Valve Brass 4 gpm

SKU CH-ACMC-NF74Q

Brass tempering valve blends hot and cold water to 85–115 °F at 4 gpm for lavatory supply

  • Main materialHAWA
  • Product weight1.01
  • Consistent 85-115°F output for safe lavatory use
  • Brass body handles 125 psi for durable installation
  • Compression 3/8 in connections simplify pipework
  • ASSE 1070 and CSA B 125.3 certified for code compliance
  • Four gpm flow rate suits standard lavatory demand

Brass Tempering Valve for Lavatory Installations

This Acorn ST70CP-38 valve blends hot and cold water for lavatory fixtures using a brass body and compression connections. It delivers a 4 gpm flow rate within a 85 to 115 Degrees F outlet range. The unit suits new or retrofit commercial and residential plumbing systems.

Practical Limits of ASSE 1070 Compliance

The valve operates with hot supply between 120 and 180 Degrees F and cold supply between 35 and 80 Degrees F. Maximum working pressure is 125 psi. Inlet and outlet ports are fixed at 3/8 in compression, so pipe sizing must match these dimensions exactly.

Replaces Non-Compensating Mixing Valves

Installers upgrade to this model when code requires ASSE 1070 and CSA B 125.3 compliance for point-of-use temperature control. It is not for high-flow shower systems or applications needing inlet sizes larger than 3/8 in. The jump is worth it when scald protection at the lavatory is mandated.

How it compares

Measured against everything we stock in Drain Cleaners & Plumbing Tools, at today’s prices. Recalculated every night.

Price $72.99
Pricier than about 55% of the 1,087 comparable items (median $57.99).

Specifications

Product
Brand nameACORN
Size & build
Main materialHAWA

Questions about this item

Should I choose the 3/8 in compression version or another size?

This valve is supplied with 3/8 in compression connections on both inlet and outlet; select it when your supply lines match that size.

What mixed-water temperature will I actually get at the tap?

The valve blends hot and cold water to deliver a stable outlet between 85 and 115 degrees Fahrenheit.

Does the ASSE 1070 rating limit the pressure I can run?

The valve meets ASSE 1070 and CSA B 125.3 and is rated for a maximum working pressure of 125 psi.

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