Danfoss 034G2850 Electric Regulating Valve – KVS 42, 1 1/8 inch Solder ODF, R22, R134a, R404A

The Danfoss 034G2850 electric regulating valve (KVS 42) is designed for large HVAC and refrigeration systems. Built with a balanced port and bi-flow capability, it provides precision refrigerant control and efficient performance in demanding conditions. Compatible with refrigerants such as R22, R134a, and R404A.

Key Features

• Refrigerant compatibility: R22, R134a, R404A, R407A, R407C, R407F, R410A, R422B, R422D, R438A, R448A, R449A, R450A, R452A, R507A, R513A, R1234ze(E)
• Rated capacity: 40.4 kW (11.4 tons) with R22, 29.3 kW (8.3 tons) with R134a, 35.3 kW (10 tons) with R404A
• Temperature range: -40 F to 150 F
• Connections: 1 1/8 inch Solder ODF inlet × 1 1/8 inch Solder ODF outlet
• Valve type: Straightway, externally equalized, bi-flow
• Capillary tube: Not applicable
• Maximum working pressure: 493 psig
• Flow time speed: 12.7 to 25.4 seconds
• Enclosure rating: IP67
• Electrical connection: M12, 4-pin male, step motor (bi-polar), 11.5V to 13.8V DC
• Resistance: 0.1 kOhm
• Compatible controllers: EKC 368, EKE 1A, EKE 1B, EKE 1C
• Balanced port: Yes

Applications

Ideal for supermarket refrigeration racks, chillers, walk-in freezers, and cold storage rooms requiring high-capacity electronic expansion valve control with wide refrigerant compatibility.

Competitor Equivalent Part Numbers

• Emerson EXV-30-404A
• Sporlan SEH-30
• Alco EX6-04-R22

Frequently Asked Questions

• What refrigerants can be used with the 034G2850 valve?
  It supports a wide range including R22, R134a, R404A, and low-GWP alternatives like R1234ze(E).
• What is the maximum cooling capacity?
  Up to 40.4 kW (11.4 tons) with R22, suitable for heavy-duty refrigeration applications.
• Does it feature bi-flow operation?
  Yes, with a balanced port design for consistent flow in both directions.
• How is it electrically controlled?
  Operates via a bi-polar step motor at 11.5V to 13.8V DC with M12 4-pin connector.