Master Mixing Valve Sizing Guide

Welcome to the Master Mixing Calculator. We built this tool so that you could size and select the correct Acorn MV17 Master Mixing Thermostatic Valve based on the characteristics of your project.

3 Easy Steps

Step 1 of 3: Enter all of your project details. On the next step you will enter all of your fixtures.

Project Information

Project Type*

Project Name*

Project Location*

We do not store any of this information. These fields are used for your convenience and included in the printed version available in Step 3

Preparer Information

Preparer Name*

Preparer Email Address

Preparer Phone #

We do not store any of this information. These fields are used for your convenience and included in the printed version available in Step 3

Temperatures

Master Mixing Temp (°F)* Must be 100-160

Min Cold Water Temp (°F)* Must be 32-80

Fixture Outlet Temp (°F)* Must be 32-160

Inlet Pressure and Distances

Inlet Pressure (PSI)* Must be 0-125

Vertical Rise (ft)* - highest fixture If Master Mixing is above the fixtures, enter a negative number for vertical rise

Horizontal Dist (ft)* - farthest or highest fixture Must be 0-1000

Usage Factor (%) - on at a time Must be 0-100. If you do not enter a usage factor, a default value of 80% will be used to calculate Actual Demand results if applicable.

Required Minimum Flow (GPM)* Must be 0-12

Pressure Difference

Total Available PSID Based on 0.43 PSI/Vertical ft plus 0.01 PSI/Horizontal ft loss

Recommended PSID 10 PSID is reserved for farthest/highest fixture

PSID* Enter the PSID you'd like to use for valve selection.

Warning! A PSID much lower than the recommended PSID will result in an oversized valve and unnecessary higher cost.

Enter Fixture Totals