this part is built for field-service replacement within Robertshaw 1820 and 1830 series pilot assemblies

5-inch and 4-inch octagon

007 orifice provides a consistent 1

This genuine Alco power head is fully compatible with both R22 and R407C refrigerant

Johnson Controls D-3073-600 Diaphragm Assembly Els PW 17895 this part is built forThe Johnson Controls D 3073 600 Diaphragm Assembly is a high performance replacement component specifically engineered for the D 3070 Series of pneumatic actuators. Designed for heavy duty HVACR applications, this assembly ensures the precise modulation and stroke required to maintain system calibration and air tight operation. Constructed from durable, flexible elastomer materials, the D 3073 600 is built to withstand the repetitive cycling and