Honeywell 14002374-004 Restrictor Block Assembly Kit 0.005 in. for TP970 Series Thermostats

The Honeywell 14002374-004 restrictor block assembly kit is a genuine replacement part for Honeywell TP970 series pneumatic thermostats. The restrictor block, also called a thermostat restrictor or restrictor assembly, controls the flow of air through the thermostat's pneumatic circuit. A new one restores proper proportional control in heating and air conditioning systems.

Key Features:

• Restrictor orifice size of 0.005 in.
• Supplied as a block assembly with gasket
• Designed for two-pipe pneumatic thermostats, including the TP970, TP971, TP972, TP973 and TP9600 families, and the HP970 and HP972 humidistat-style controllers
• Maximum operating pressure of 25 psi (170 kPa) for the TP970 series
• Genuine Honeywell OEM replacement part, part number 14002374-004

Replacing a clogged or worn restrictor block helps restore accurate, stable pneumatic thermostat output, so valves and damper actuators respond correctly.