Pressure Control Valves
Back Pressure Regulators UV 3.2
Valve for small and medium Flow Rates
Technical Data
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Connection DN 15 - 50
Nominal Pressure PN 16 - 40
Inlet Pressure 2 - 40 bar
Kvs-Value 0.2 - 5.5 m3/h
Temperature 300
Medium liquids and gases
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 UV 3.2 backpressure regulator is a spring-loaded proportional
control valve featuring diaphragm, piston or bellows control. It is
designed for small volumes. The valve cone can be fitted with a metallic
or soft seal.
These valves are no shut-off elements ensuring a tight closing of the
MANKENBERG GmbH | Spenglerstraße 99 | D-23556 Lübeck
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:
Leakage class III (metal sealing cone) = 0.1 % Kvs value
Leakage class V (soft seal cone) = 1.8 x 10-5 x Δp x D* [l/h]
*D=seat diameter Kvs-Values [m3/h]
seat nominal diameter DN
Options 15 20 25 32 40 50
The inlet pressure to be controlled is balanced across the valve seat by I 0.2 0.25 0.25 0.4 0.4 1
the force of the valve spring (set pressure). If the inlet pressure rises II 0.9 0.9 0.9 2.5 2.5 3.5
above the set pressure, the valve opens. With decreasing inlet pressure III 1.8 2.2 2.2 3.9 3.9 5.5
the valve control orifice reduces, when the pipeline is depressurised, the
valve is closed. Rotating the adjusting screw clockwise increases the inlet
pressure.
» for toxic or hazardous media: sealed spring cap 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 mediumm
» special versions on request
Operating instructions, know how and safety instructions must be
Page No. UV 3.2/2.1.172.1 - Standing 19.05.2017
observed. All the pressure has always been indicated as overpressure.
We reserve the right to alter technical specifications without notice.
Pressure Control Valves
Back Pressure Regulators UV 3.2
Valve for small and medium Flow Rates
Materials
Dimensional Drawing
Temperature 80 °C 130 °C 300 °C
www.mankenberg.de | Tel. +49 (0) 451 - 8 79 75 0
Body cast steel optional CrNiMo-steel
Spring Cap steel welded optional CrNiMo-steel
Spring spring steel optional CrNiMo-steel
Metallic seal CrMo-steel optional CrNiMo-steel
Soft Seal NBR EPDM optional -
FKM
Diaphragm CR EPDM optional -
FKM
O-Ring NBR EPDM optional -
FKM or FXM
Bellow CrNiMo-steel CrNiMo-steel CrNiMo-steel
Dimensions [mm]
size nominal nominal diameter DN
pressure 15 25 32 40 50
A* PN 16 - 40 130 160 180 200 230
B PN 16 - 40 - - 72 72 72
C PN 16 - 40 on request
* overall length tolerances in acc. with DIN EN 558
Recommended Installation
MANKENBERG GmbH | Spenglerstraße 99 | D-23556 Lübeck
Weights [kg]
nominal nominal diameter DN
pressure 15 20 25 32 40 50
PN 16 10 13 15 17 20 23
PN 25/40 13 15 17 20 23 26
Customs Tariff Number
84814010
Special designs on request.
The pressure has always been indicated as overpressure.
Mankenberg reserves the right to alter or improve the designs or
specifications of the products described herein without notice.
1 Strainer 5 Pressure Gauge
2 Shutoff valves 6 Leakage Line G 3/8
3 Backpressure Regulator (option)
4 Safety Valve
use MANKENBERG-Products
Page No. UV 3.2/2.1.172.2 - Standing 19.05.2017
