Danfoss 034L0093 Pressure Regulator

The Danfoss 034L0093 is a high-performance KVR 12 condensing pressure regulator engineered to maintain stable head pressures in refrigeration and air conditioning systems. Designed for use with air-cooled condensers, this 1/2" ODF solder connection valve ensures consistent operation even during low ambient temperature conditions by modulating the flow of liquid or hot gas. Built with a stainless steel bellows and a pulsation damping design, the KVR 12 pressure regulator provides precise control over a regulation range of 73 to 254 psig (5 to 17.5 bar), with a factory setting of 145 psig.

For veteran technicians, the 034L0093 offers reliable performance with a maximum working pressure (MWP) of 406 psig and a wide medium temperature range of -49°F to 266°F. This Danfoss KVR 12 model features a 1/4" Schrader access port for simplified pressure monitoring and field adjustments. Its hermetic brazed construction is compatible with a broad spectrum of refrigerants, including R22, R134a, R404A, R407C, R448A, and R449A. This HVACR pressure control valve is typically paired with an NRD differential valve to optimize receiver pressure management in complex commercial systems.

• Precise Head Pressure Control: Maintains optimal condensing pressure to prevent evaporator icing and ensure proper expansion valve performance in low ambient conditions.
• Extreme Durability: Features a robust stainless steel bellows and hermetically sealed body to withstand high-vibration environments.
• Service-Friendly Design: Integrated 1/4" Schrader valve allows for rapid gauge connection and accurate onsite calibration.
• Broad Compatibility: Rated for use with HCFC, HFC, and various flammable refrigerants (KVR 12-22 models), supporting modern system retrofits.
• Flexible Installation: Compact angle design permits mounting in any orientation on either the liquid or gas side of the condenser.

What is the primary function of the KVR 12 in a system?
The KVR 12 acts as a condensing pressure regulator that throttles flow to maintain a constant minimum pressure in the condenser, ensuring the system operates efficiently regardless of outdoor temperature fluctuations.

Can the Danfoss 034L0093 be used with newer A2L refrigerants?
Yes, the KVR 12 is evaluated for use with various refrigerants, including R454A, R454C, and R1234yf, provided the installation adheres to specific safety standards for the application.

How do I adjust the pressure setting on this valve?
The setting is adjusted by removing the seal cap and turning the setting screw; the valve opens on a rise in inlet pressure, and the 1/4" access port should be used to verify the setpoint during commissioning.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.