Mechanical pressure regulating valves
Product types shown: 7
KDC / GVD
The KDC/GVD valve is a pressure control valve. The valve controls the discharge pressure of the compressor to ensure fast build-up of pressure and lubrication pressure. The valve also acts as a check valve in the discharge line of the compressor.
The KDC/GVD valve is force-controlled so that when pressure in the oil separator becomes 2 bar (29 psi) higher than the suction pressure, the spring is compressed, and the valve opens. In low-pressure units (boosters), the spring requires a differential pressure of 0.5 bar (7 psi) for the valve to open.
KVD
KVD is a modulating receiver pressure regulator. It opens on falling receiver pressure and bypasses hot gas to maintain the receiver pressure at the regulator setting (adjustable).
KVD and KVR form a regulating system, used to maintain constant and adequately high condensing and receiver pressure in plant with heat–recovery, and in refrigeration and air conditioning plant with air - cooled condensers.
KVP
Der KVP ist in der Saugleitung nach dem Verdampfer montiert und dient folgenden Zwecken:
1. Aufrechterhaltung eines konstanten Verdampfungsdrucks und damit einer konstanten Oberflächentemperatur am Verdampfer. Die Regelung erfolgt modulierend. Durch Drosselung in der Saugleitung wird die Kältemittelmenge an die Verdampferlast angepasst.
2. Schutz vor zu niedrigem Verdampfungsdruck (z. B. zum Schutz vor Einfrieren in einem Wasserkühler). Der Regler schließt, wenn der Druck im Verdampfer unter den eingestellten Wert fällt.
3. Unterscheiden Sie die Verdampfungsdrücke in zwei oder mehr Verdampfern in Systemen mit einem Kompressor.
OFV / OFV SS
OFV are angle-way pressure regulating valves, which have adjustable opening pressure and cover the deferential pressure range (ΔP): 2 – 8 bar (29 – 116 psi). The valve can be closed manually, e.g. during plant service and have backseating, enabling the spindle seal to be replaced with the valve still under pressure.
The valves are especially designed to prevent fluttering due to low velocity and/or low density. In consequence it is possible to apply the valves with wide fluctuations in capacity demands, i.e. from maximum performance to part load. A flexible O-ring provides perfect sealing over the seat.
