Vsm (Uv 4.4) Van Điều Khiển Áp Suất Vsm (Uv 4.4), Mankenber Viet Nam

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Pressure Control Valves

Back Pressure Regulators VSM (UV 4.4)
Epoxy-coated Cast Valve for medium Flow Rates

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Technical Data

Connection DN 50 - 150
Nominal Pressure PN 10, 16, 25, 40
Inlet Pressure 1.5 - 6 bar, 5 - 12 bar
Kvs-Value 20 - 190 m³/h
Temperature 70 °C
Medium water

Description

Self-acting back pressure regulators are simple control valves offering
accurate control while being easy to install and maintain. They control
the pressure upstream of the valve without requiring pneumatic or
electrical control elements.
The VSM (UV 4.4) backpressure regulator is a piston-controlled,
spring-loaded proportional regulator with relief for large throughputs.
The valve housing is made of spheroidal graphite iron with a continuous
epoxy coating while the valve cone is soft-sealed.
The inlet pressure to be controlled is balanced across the valve seat by
the force of the valve spring (set pressure). If the inlet pressure rises
above the set pressure, the valve opens. With decreasing inlet pressure
the valve control orifice reduces, when the pipeline is depressurised, the
valve is closed. Rotating the adjusting screw clockwise increases the inlet
pressure.
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 V.

Standard
» Designed acc. to EN-1074/4
» Flanges as per EN 1092/2
» Pressure stage PN 16
» Body made of spheroidal cast iron GJS 450-10 with epoxy coating in
blue RAL 5005, thickness min. 250 μm
» Internal parts made of stainless steel 1.4301
» Closed spring cap
» Internal control bore
» Coating as per DVGW W270 and KTW recommendation of the
German Ministry for Health
» Pressure gauge pre-installed

Options
» Internal parts made of 1.4404
» Elastomers made of EPDM or Viton
» Pressure stages PN 25 and PN 40
» Special designs on request:
- Nickel-plated version for air and liquids up to 100°C,
elastomers made of Viton
- Flanges drilled in acc. with ANSI
Operating instructions, know how and safety instructions must be
observed. The pressure has always been indicated as overpressure.
We reserve the right to alter technical specifications without notice.

Upstream Pressure Buildup

The plot is showing the increase in the upstream pressure that occurs
through the valve, when the flow increases. Ensure that the operating
conditions fall on the area depicted in blue for the recommended fluid
flow velocity through the valve.

* in accordance with KTW-recommendation and DVGW W270, thickness
min. 250 μm