The VT3221 is primarily designed for liquid media

Using an incorrect color-coded spring will lead to calibration failures and inaccurate pneumatic valve modulation

This rubber seat poppet model is specifically designed for main burner and pilot load applications where maintaining accurate control of low flow rates is critical for stable combustion

Does this unit require a secondary fuse

Can this replace a limit switch with a different temperature rating

Johnson Controls GRD10-1R Wire Guard Els PW 17895 The VT3221 is primarily designedThe Johnson Controls GRD10 1R Wire Guard is a heavy duty field accessory designed to protect critical environmental controls from physical damage, tampering, and unauthorized setpoint adjustment. This steel wire thermostat guard features a robust, open web design that ensures maximum airflow to the sensing element while providing a physical barrier in high traffic or hostile environments. With inside dimensions of 6. 19" x 3. 81" x 2. 56", the GRD10