Dm 620 Van Giảm Áp ,Dm 620 Mankenber Viet Nam

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PRESSURE CONTROL
Pressure reducing valve DM 620
High pressure valve for medium and high flow rates

Technical data

Connection DN 15 - 50
Connection G 1/2 - 2
Nominal pressure PN 16 - 315
Inlet Pressure up to 315 bar
Outlet Pressure 2 - 160 bar
Kvs-value 0.4 - 10 m³/h
Temperature 200 °C
Medium liquids and gases
*RT = -10 °C up to + 50 °C

Description

Self-acting pressure reducers are simple control valves offering accurate
control while being easy to install and maintain. They control the pressure
downstream of the valve without requiring pneumatic or electrical control elements.
The DM 620 pressure reducing valves are diaphragm-controlled springloaded and balanced proportional control valves for high inlet and outlet
pressures. They can be supplied with three types of connections: sockets,
flanges or welding spigots. Each size of valve may be fitted with three different seats. The valve cone may be fitted with a soft or metallic seal.
The outlet pressure to be controlled is balanced across the control unit by
the force of the valve spring (set pressure). As the outlet pressure rises
above the pressure set using the adjusting screw, the valve cone moves towards the seat and the volume of medium is reduced. As the outlet pressure
drops, the valve control orifice increases; when the pipeline is depressurised, the valve is open. Rotating the adjusting screw clockwise increases
the outlet pressure.
Der max. zulässige Hinterdruck beträgt - sofern nicht anders angegeben -
das 1,5-fache des Einstelldruckes.
These valves are no shut-off elements ensuring a tight closing of the valve.
In accordance with DIN EN 60534-4 and/or ANSI FCI 70-2 they may feature
a leakage rate in closed position in compliance with the leakage classes III
or V, optional IV.

Standard

» Balanced cone for controlling the outlet pressure indipendently from the
inlet pressure

Options

» pressure gauge connection
» hard-faced valve cone and seat
» for toxic or hazardous media: sealed bonnet complete with leakage line
connection (incl. sealed adjusting screw). Must be installed with a leakage line capable of draining leaking medium safely and without pressure
» various diaphragm and seal materials suitable for your medium
» special materials such as Duplex, Superduplex, Hastelloy® or titanium,
others on request
» special connections: ANSI or JIS flanges, NPT, welding spigots; other
connections on request
» special versions on request

A2 = Welding ends
*overall length tolerances in acc. with DIN EN 558
** Outlet pressure ≥ PN 63 on request