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VMA 2-Way Seated Valve
Brand: DanfossVMA is 2-way seated valve primarily for use in district heating systems. It can be combined with:
- ABV thermohydraulic actuators
- VMA DN 15 can additionally be combined with self-acting thermostatic actuators RAVI, RAVK and RAVV
All sizes have external thread for flat packing (DIN 7603)
Specifications
Brand
Applications
- District Heating
- Heating Systems
Approvals & Certifications
- Conical Extension Thread - EN 10226-1
BSP Connection
- G 3/4” A Male
- 1/2” BSPT Male
Cone Material
- Valve Cone: EPDM
Connection Style
- Cylindrical External Thread According to ISO 228/1
- Tailpieces: Weld-On & External Thread
Control Functions Characteristics
- Approximately Linear
Differential Pressure
- psi: 14.5 to 72.52 (kPa: 100 to 500, bar: 1 to 5) - RAVI/RAVV
- psi: 58.02 to 101.5 (kPa: 400 to 700, bar: 4 to 7) - ABV
- psi: 7.25 to 43.51 (kPa: 50 to 300, bar: 0.5 to 3) - RAVK
Enclosure, Body Material
- Valve: Dezincing Free Brass
Flow Rate
- 0.25 to 2.5 m³/hour (Kvs)
Materials of Construction
- Valve Insert & Valve Stuffing Box: Dezincing Free Brass
Measuring Range
- Medium PH: 7 to 10
Media
- Circulation Water, Glycolic Water up to 30 %
Nominal Pressure
- psi: 232.1 (bar: 16, kPa: 1,600)
Process Temperature
- 2° to 130° C (35.6° to 266° F)
Ratio
- Control Ratio:1:50
Seat / Seal Material
- Seat: 303 Stainless Steel, 1.4305
Spindle Material
- Dezincing Free Brass
Valve Size
- 1/2” (15 mm)
- District Heating Systems
