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AFQ Flow Controller for VFQ 2 (1)
Brand: Danfoss
The controller is a self-acting flow controller primarily for use in district heating systems. The controller closes when set max. flow is exceeded.
The controller has a control valve with adjustable flow restrictor and an actuator with one control diaphragm.
Further on two valve versions are available:
- VFQ 2 with metallic sealing cone
- VFQ 21 with soft sealing cone
Specifications
Brand
Actuator Size
- 38.7 in² (250 cm²)
Applications
- Used in District Heating Systems
Diaphragm Material
- EPDM (Rolling, Fibre Enforced)
Differential Pressure
- psi: 2.90 (kPa: 20, bar: 0.2)
- psi: 7.252 (kPa: 50, bar: 0.5)
Enclosure, Body Material
- Actuator: 1008 Stainless Steel
- Actuator: Zinc-Plated & Yellow Chromate
Mounting Position
- Any Position for DN 15 to 80, Tmax ≤ 120° C (248° F)
- Horizontal for DN 15 to 80, Tmax > 120° C (248° F), DN 100 to 250
Operating Pressure
- Maximum
- District Heating Systems
