We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brass tempering valve with NPT connections, compact square body

Acorn

Acorn ST70CP-12 Tempering Valve Brass 4.5 gpm

SKU CH-QJKZ-TMX7M

A brass tempering valve mixes hot and cold water to deliver a safe 85 to 115 °F supply at 4.5 gpm for lavatories, with 1/2 in NPT connections and ASSE 1070 compliance

  • Delivers safe mixed water for lavatories using ASSE 1070 compliance
  • Maintains stable output between 85 and 115 degrees F across supply variations
  • Handles up to 4.5 gpm flow for reliable fixture performance
  • Brass body withstands 125 psi maximum pressure for durable service
  • Accepts hot supply from 120 to 180 degrees F and cold from 35 to 80 degrees F

Brass Tempering Valve for Lavatories

The Acorn ST70CP-12 is a brass tempering valve designed for lavatory installations. It blends hot and cold water to deliver a controlled output within a range of 85 to 115 degrees Fahrenheit. The valve accepts 1/2 inch NPT connections on both inlet and outlet sides. It is built for new installations requiring point-of-use temperature control.

Steady 4.5 gpm Flow Under Continuous Demand

Rated at 4.5 gpm, the valve maintains its set temperature during sustained draw rather than only in short bursts. It operates with cold inlet temperatures between 35 and 80 degrees Fahrenheit and hot inlet temperatures between 120 and 180 degrees Fahrenheit. The body withstands a maximum pressure of 125 psi. Compliance with ASSE 1070 and CSA B 125.3 confirms consistent performance under continuous load.

Direct Replacement for Worn Mechanical Mixing Valves

This unit replaces aging two-handle mixing valves that drift over time or lack integral temperature limiting. The jump is worth it when a facility needs code-compliant scald protection at each lavatory without adding a separate thermostatic controller. It is not suited for high-volume shower batteries or systems requiring flow rates above 4.5 gpm.

Highlights

  • Delivers safe mixed water for lavatories using ASSE 1070 compliance
  • Maintains stable output between 85 and 115 degrees F across supply variations
  • Handles up to 4.5 gpm flow for reliable fixture performance
  • Brass body withstands 125 psi maximum pressure for durable service
  • Accepts hot supply from 120 to 180 degrees F and cold from 35 to 80 degrees F

Specifications

BrandACORN

Questions about this item

How much heat does the valve dissipate when it runs continuously at 4.5 gpm?

The valve is a passive mixing device with no electrical components, so it generates no measurable heat during continuous operation.

What pipe fittings must already be in place for the 1/2 in NPT connections?

Both inlet and outlet require 1/2 in NPT threaded pipe or adapters; the valve body is brass with matching NPT ports.

Will the valve accept hot water from an older heater that delivers water at 180 °F?

Yes, the hot inlet temperature range is 120 °F to 180 °F, so it is compatible with heaters supplying water at the upper end of that range.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.