Pressure retaining valve V 186 . V86

Product catalog summary

Overview: The document provides detailed technical specifications and features of the pressure retaining valve models V 186 and V86, which are designed for maintaining constant back pressure in process plants. These valves are suitable for high purity applications and aggressive fluids due to their cavity-free design and high corrosion-resistant plastic materials.

Specifications: The valves are available in sizes ranging from DN 10 to DN 100 and are made from materials such as PVDF, PP, and PVC. They operate within a temperature range of 0 to +100°C depending on the material. The valves are almost maintenance-free and can be installed in various positions due to their compact design.

Functionality: The valves function by opening to release excess pressure when the inlet pressure exceeds a preset value, and closing when the pressure decreases. The spring force, which controls the diaphragm, can be adjusted using a set screw and lock nut.

Technical Data: The document includes detailed dimensions for different materials and sizes, as well as performance diagrams that illustrate the relationship between set pressure and flow rate at 20°C.

Components: Key components of the valve include the body, bonnet, diaphragm, compressor, pressure spring, spring plate, setup screw, and cap. Spare part kits are available for different materials and sizes.

Additional Information: The document notes that the technical data is non-binding and subject to change, with general terms of sale applying.

Catalog excerpts

FACTS I FIGURES I DATA . Pressure retaining valve V 186 V86

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The pressure retaining valve V 186 are used where a constant back pressure is required for operating process. Installed as bypass, it can also be used as a relief valve for reducing pressure peaks. The cavity free valve body design, without gasket, makes it particularly suitable for high purity applications and aggressive fluids. The pressure retaining valves are used to provide a constant back pressure in process plant. If the inlet pressure rises above a preset value, the diaphragm is raised against the spring force. The valve opens and the excess pressure escape into the outlet line. If the...

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Body operating temperature Diphragme TECHNICAL DATA Pressure rate Set Pressure Type Size PN range in bar Face to face (L) PVC PP/PVDF 134 158 Face to face Flange (L1) PVC PP PVDF Face to face union (L2)

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PP/EPDM IR-spigots PP/PTFE IR-spigots PVDF/PTFE IR-spigots Body Bonnet Diaphragm Compressor Pressure spring Spring plate Set up screw Cap Set of screws Drawn offset

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The characteristic curves on the graphs show the increase in the set pressure from 0 through to the maximum permissible ﬂow rate. The upper and lower lines plot the course of the opening and closing pressure respectively. All characteristic curves apply to water at a temperature of 20 °C.

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PRESSURE RETAINING VALVE V 186 9 Hexagon socket screw with nut The technical data is non-binding. It is not to be regarded as representing assured properties or as a guarantee of quality or durability. We reserve the right to make changes. Our general terms of sale apply.

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