Watts 0121344 Valve 326010-701 The Johnson Controls R-3710-3107 is

The Johnson Controls R-3710-3107 is a precision-engineered pneumatic restrictor designed for stable airflow control in low-pressure HVAC control circuits

This genuine OEM Pressure Switch Nema 4 is engineered to monitor combustion air and flue gas pressures

the MTZ series with POE oil is typically required

providing stable performance under varying thermal loads

3-inch frame construction is built for heavy-duty residential heating service

Watts 0121344 Valve 326010-701 The Johnson Controls R-3710-3107 isThe Watts 0121344 (Series LF100XL 4 175) is a heavy duty 3 4 inch T&P relief valve designed specifically for hot water storage tanks and commercial water heater applications. Engineered with a lead free copper silicon alloy body, this valve provides critical automatic temperature and pressure protection for systems rated up to 105,000 BTU hr. The 100XL 4 model features an extended 4 inch thermostat with a specialized thermo bonded coating, ensuring