Pressure Control Valves
Pressure Reducing Valves DM 662
Universal Valve for Medium Flow Rate
Technical Data
www.mankenberg.de | Tel. +49 (0) 451 - 8 79 75 0
Connection DN 15 - 25
Connection G 1/2 - 1
Nominal Pressure PN 100
Inlet Pressure up to 100 bar
Outlet Pressure 0.02 - 12 bar
Kvs-Value 3.2 - 3.6 m3/h
Temperature 130 °C
Medium liquids and gases
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 662 pressure reducing valve is a diaphragm-controlled
spring-loaded and balanced proportional control valve for universal
application and medium volumes.
This pressure reducer is manufactured from deep-drawn stainless steel
MANKENBERG GmbH | Spenglerstraße 99 | D-23556 Lübeck
featuring excellent corrosion resistance. The valve cone is fitted with a
soft seal.
The spring module comprising spring cap, spring, adjusting screw,
diaphragm and internal components, is connected to the valve body only
by means of a clamp ring and two bolts. Changing the diaphragm or the
complete spring assembly for a different control pressure range is
extremely simple and does not call for special tools. The same applies to Kvs-Values [m3/h]
servicing and maintenance. nominal DN 15 20 25
The outlet pressure to be controlled is balanced across the control unit diameter G 1/2 3/4 1
by the force of the valve spring (set pressure). As the outlet pressure rises Kvs-value 3.2 3.5 3.6
above the pressure set using the adjusting screw, the valve cone moves m3/h
towards the seat and the volume of medium is reduced. As the outlet
pressure drops, the valve control orifice increases; when the pipeline is Setting Ranges, Nominal Pressure, Reduction Ratio
depressurised, the valve is open. Rotating the adjusting screw clockwise setting range [bar] 6 - 12 4-8 2-5 0.8 - 2.5
increases the outlet pressure. nominal pressure PN BSP female connection
A sense line is required for outlet pressures ≤ 1.1 bar (to be installed 100/16 100/16 100/10 100/6
on-site). flange connection
These valves are no shut-off elements ensuring a tight closing of the 40/16 40/16 40/10 40/6
valve. In accordance with DIN EN 60534-4 and/or ANSI FCI 70-2 they p1/p2 max. 15 15 20 45
may feature a leakage rate in closed position in compliance with the
leakage classes V optional IV: Setting Ranges, Nominal Pressure, Reduction Ratio
Leakage class IV (PTFE seal cone) = 0.01 % Kvs value
setting range [bar] 0.3 - 1.1 0.1 - 0.5 0.02 - 0.12
Leakage class V (soft seal cone) = 1.8 x 10-5 x Δp x D* [l/h]
Page No. DM 662/2.1.172.1 - Standing 18.05.2017
*D=seat diameter nominal pressure PN BSP female connection
100/2.5 100/1 100/1
Standard flange connection
40/2.5 40/1 40/1
» all stainless steel construction
p1/p2 max. 60 150 510
» non rising adjusting screw
» quick-release body clamp ring
» sense line connection (only for outlet pressures ≤ 1.1 bar)
» balanced cone for controlling the outlet pressure indipendently from
the initial pressure
Options
» pressure gauge connection
» pneumatic actuation
» 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 medium
» special connections: Aseptic, ANSI or JIS flanges, NPT, welding spigots;
other connections on request
» special versions on request
Operating instructions, know how and safety instructions must be
observed. All the pressure has always been indicated as overpressure.
We reserve the right to alter technical specifications without notice.
Pressure Control Valves
Pressure Reducing Valves DM 662
Universal Valve for Medium Flow Rate
Materials
Dimensional Drawing
Temperature 130 °C
www.mankenberg.de | Tel. +49 (0) 451 - 8 79 75 0
Body, Spring Cap, CrNiMo-steel
Diaphragm Housing,
Internals, Screws
Spring CrNi-steel
Valve Seal EPDM optional FKM or PTFE
Diaphragm EPDM optional FKM or PTFE
O-Ring EPDM optional FKM or PTFE
Protection Foil (option) PTFE
Dimensions [mm]
pressure range size nominal diameter
bar G 1/2 G 3/4 G1
DN 15 DN 20 DN 25
all ranges A* 90 90 136
A1* 200 200 200
B 40 40 40
0.02 - 0.12 C 270 270 270
D 360 360 360
0.1 - 0.5 C 270 270 270
MANKENBERG GmbH | Spenglerstraße 99 | D-23556 Lübeck
D 264 264 264
0.3 - 1.1 C 270 270 270
D 200 200 200 Recommended Installation
0.8 - 2.5 C 205 205 205
D 138 138 138
2-5 C 205 205 205
D 138 138 138
4-8 C 205 205 205
D 138 138 138
6 - 12 C 205 205 205
D 138 138 138
* overall length tolerances in acc. with DIN EN 558
Weights [kg]
setting range bar nominal diameter G nominal diameter DN
1/2 3/4 1 15 20 25
0.02 - 0.12 13 13 13 14 14 14 1 Strainer 5 Pressure Gauge
0.1 - 0.5 6.5 6.5 6.5 7.5 7.5 7.5 2 Shut-off Valves 6 Sense Line G 3/8 (option)
3 Pressure Reducer 7 Leakage Line G 1/8 (option)
Page No. DM 662/2.1.172.2 - Standing 18.05.2017
0.3 - 1.1 5.5 5.5 5.5 6.5 6.5 6.5
4 Safety Valves
0.8 - 12 2.5 2.5 2.5 3.5 3.5 3.5
sense line connection 10 - 20 x DN behind the valve
Customs Tariff Number use MANKENBERG-Products
84811019
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.
