Pressure Reducing Valves DM 662
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Pressure Control Valves Pressure Reducing Valves DM 662 Page No. DM 662/2.1.128.1 - Standing 18.09.2012 MANKENBERG GmbH | Spenglerstraße 99 | D-23556 Lübeck www.mankenberg.de | Tel. +49 (0) 451 - 8 79 75 0 Universal Valve for Medium Flow Rate Technical Data Connection DN Connection G Nominal Pressure PN Inlet Pressure Outlet Pressure Kvs-Value Temperature Medium 15 - 25 1/2 - 1 100 up to 100 bar 0.02 - 12 bar 3.2 - 3.6 m3/h 130 °C liquids and gases Description Medium-controlled 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 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 servicing and maintenance. The outlet pressure to be controlled is balanced across the diaphragm 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. A sense line is required for outlet pressures ≤ 1.1 bar (to be installed on-site). These valves are no shut-off elements ensuring a tight closing of the valve. In accordance with the VDI/VDE guideline 2174 a leakage rate of 0.05 percent of the constant volume flow is permitted for the valve in closed position. Standard » » » » » all stainless steel construction 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. Kvs-Values [m3/h] nominal DN diameter G Kvs-value m3/h 15 1/2 3.2 20 3/4 3.5 Setting Ranges, Nominal Pressure, Reduction Ratio setting range [bar] 6 - 12 4-8 2-5 nominal pressure PN BSP female connection 100/16 100/16 100/10 flange connection 40/16 40/16 40/10 p1/p2 max. 15 15 20 Setting Ranges, Nominal Pressure, Reduction Ratio setting range [bar] 0.3 - 1.1 0.1 - 0.5 nominal pressure PN BSP female connection 100/2.5 100/1 flange connection 40/2.5 40/1 p1/p2 max. 60 150 25 1 3.6 0.8 - 2.5 100/6 40/6 45 0.02 - 0.12 100/1 40/1 510

Pressure Control Valves MANKENBERG Pressure Reducing Valves DM 662 Universal Valve for Medium Flow Rate 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. Dimensional Drawing sense line leakage line connection adjusting screw sealing Recommended Installation sense line connection 10 - 20 x DN behind the valve 6 Sense Line G 3/8 (option) 7 Leakage Line G 1/8 (option)