Danfoss OFV Overflow Valves

OFV and OFV-SS 20-25 are angle-way pressure regulating valves with adjustable opening pressure, covering a differential pressure range (ΔP) of 2 – 8 bar. Specially designed to prevent fluttering at low velocity and/or low density, they handle wide capacity fluctuations from maximum performance to part load.

Three functions in one valve: pressure regulating valve + check valve + shut-off valve. The valve can be closed manually (e.g. during plant service) and has backseating, so the spindle seal can be replaced with the valve still under pressure.

Wenzhou Phonetoo Electromechanical Co., Ltd. is an authorized Danfoss distributor in China. Contact us for availability, pricing and delivery time.

Range

Key features

• Three functions in one: regulating + check + shut-off
• Adjustable opening pressure, ΔP 2 – 8 bar (29 – 116 psi)
• Anti-flutter design for low velocity / low density duty
• Flexible O-ring for perfect sealing over the seat
• Full temperature range packing gland; backseating for seal replacement under pressure
• Refrigerants: HCFC, HFC, R717 (ammonia), R744 (CO₂)
• Classification: DNV, CRN, BV, EAC

Confirm the exact OFV type and code number in your RFQ and we will quote it.

Applications

• Pressure/temperature control during hot-gas defrosting (defrost pressure control in the evaporator)
• Overflow duty in pumped liquid and liquid injection lines
• Any application needing combined regulating, check and shut-off in one valve

Code numbers

Ordering codes for Danfoss OFV and OFV-SS overflow valves (opening differential pressure 2 - 8 bar / 29 - 116 psi). Confirm the exact type and code number in your RFQ and we will quote it.