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Pressure Retaining Valve made of PVC-U - back pressure safe

Product specification Free of plasticizers, therefore physiologically indifferent, no... more

Product specification

Free of plasticizers, therefore physiologically indifferent, no embrittling by leaching

Corrosion and impact resistant, also usable in the outside area.

Technical specification

Material:

Lower valve body: PVC-U (polyvinyl chloride, rigid), grey (RAL 7011)

Upper valve body: PP (polypropylene), glass fibre-reinforced, orange (RAL 2005)

Piston: PVC-U (polyvinyl chloride, rigid)

Separation disc: PVC-U (polyvinyl chloride, rigid)

Diaphragm: EPDM (ethylene-propylene-diene rubber), on media side PTFE (polytetrafluoroethylene)-coated

Valve seat seal: EPDM (ethylene-propylene-diene rubber); FPM (fluorinated rubber)

O-ring sealings of union ends: EPDM (ethylene-propylene-diene rubber); FPM (fluorinated rubber)

Connecting screws: stainless steel 1.4301 (V2A)

Media: technically pure, neutral and aggressive liquids provided that the selected valve materials are resistant at working temperature

Max. temperature: +50 °C

Max. operating pressure: 10 bar at +20 °C

Pressure setting range: 0.3 - 10 bar

Pressure settings: in 0.5 bar steps, between 0.5 and 10 bar

Release pressure: approx. 0.5 bar

Hysteresis: approx. 0.3 bar

Mounting position: optional

Connection: cementing spigot or screw joint with cementing socket

General Information In process plants for maintenance of working- or system-induced counter... more

General Information

In process plants for maintenance of working- or system-induced counter pressures as well as for reduction of pressure pulsation. The special diaphragm design and the interaction of diaphragm surface, valve piston and valve seat keep the working pressure at occurring counter pressure almost constant.

As pressurizing valve in metering pumps for guarantee of metering accuracy. In case of counter pressure at the secondary side the preliminary pressure and thus the metering quantity remain constant.

In all working areas where constant pressure is required.

Operating principle:

Does the working pressure or inlet pressure rise above a certain preset pressure value, the pressurized valve piston is lifted against the spring force. The valve opens and a pressure relief on the outlet side takes place. It closes as soon as the working pressure at the valve piston drops below preset spring force. If a system determined counter pressure arises at the secondary side this pressure has an impact on both simultaneously, namely under the diaphram and on the valve piston, i.e. the forces cancel out each other because the diaphragm and the valve mating surface / effective surface are the same size. The valve force and thus the working pressure remain nearly constant.

Item Image NW
mm
Connection Material gasket Unit
piece
Price
Euro*
Buy
350783
10 Klebestutzen 16 mm EPDM 1 196.00
350784
15 Klebestutzen 20 mm EPDM 1 196.00
350785
20 Klebestutzen 25 mm EPDM 1 262.00
350786
25 Klebestutzen 32 mm EPDM 1 262.00
350787
32 Klebestutzen 40 mm EPDM 1 316.00
350788
40 Klebestutzen 50 mm EPDM 1 316.00
350789
50 Klebestutzen 63 mm EPDM 1 316.00
350790
10 Verschraubung mit Klebemuffe 16 mm EPDM 1 214.00
350791
15 Verschraubung mit Klebemuffe 20 mm EPDM 1 216.00
350792
20 Verschraubung mit Klebemuffe 25 mm EPDM 1 268.00
350793
25 Verschraubung mit Klebemuffe 32 mm EPDM 1 276.00
350794
32 Verschraubung mit Klebemuffe 40 mm EPDM 1 326.00
350795
40 Verschraubung mit Klebemuffe 50 mm EPDM 1 336.00
350796
50 Verschraubung mit Klebemuffe 63 mm EPDM 1 348.00
350797
10 Klebestutzen 16 mm FPM 1 200.00
350798
15 Klebestutzen 20 mm FPM 1 200.00
350799
20 Klebestutzen 25 mm FPM 1 254.00
350800
25 Klebestutzen 32 mm FPM 1 254.00
350801
32 Klebestutzen 40 mm FPM 1 312.00
350802
40 Klebestutzen 50 mm FPM 1 312.00
350803
50 Klebestutzen 63 mm FPM 1 312.00
350804
10 Verschraubung mit Klebemuffe 16 mm FPM 1 218.00
350805
15 Verschraubung mit Klebemuffe 20 mm FPM 1 220.00
350806
20 Verschraubung mit Klebemuffe 25 mm FPM 1 278.00
350807
25 Verschraubung mit Klebemuffe 32 mm FPM 1 290.00
350808
32 Verschraubung mit Klebemuffe 40 mm FPM 1 332.00
350809
40 Verschraubung mit Klebemuffe 50 mm FPM 1 344.00
350810
50 Verschraubung mit Klebemuffe 63 mm FPM 1 358.00
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