streamlining the setup for field technicians and contractors

Engineered for high-demand HVACR and industrial pump applications

this OEM-grade replacement part provides the precise gas flow control and durability required for heavy-duty thermal cycles

and is specifically engineered to handle fresh water and neutral brines with an orifice size of 10mm for precise modulating control

Common Questions: How do I confirm if the 971-C100-19 is the correct protector for my compressor

Schneider Electric (Barber Colman) MK-4611 Proportional Control 30067439-890 streamlining the setup for fieldThe Schneider Electric MK 4611 is a rugged proportional pneumatic valve actuator designed for precise linear control in HVAC systems. Engineered with an 11 square inch effective diaphragm area, this Barber Colman MK 4611 replacement delivers reliable 5 to 10 PSI spring return action, ensuring the valve defaults to its normal position upon loss of pilot signal. The proportional control actuator features a 1 2 inch nominal stroke and a standard 1 8 inch