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Pressure Retaining Valve made of PP - back pressure safe

Type: RCT®-ST-712

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Pressure Retaining Valve made of PP - back pressure safe
 
 

Product specification

Corrosion and impact resistant

Technical specification

Material:

Lower valve body: PP (polypropylene), grey (RAL 7032)

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

Piston: PP (polypropylene)

Separation disc: PP (polypropylene)

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 and FPM resp.

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: +70 °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: butt fusion spigot or socket fusion spigot or screw joint with welded socket

 

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.

Position Item NW
mm
Connection Material gasket Unit
piece
Price
Euro
Buy
1 350811 10 butt fusion spigot or socket fusion spigot 16 mm EPDM 1 232.00 Warenkorb
2 350812 15 butt fusion spigot or socket fusion spigot 20 mm EPDM 1 232.00 Warenkorb
3 350813 20 butt fusion spigot or socket fusion spigot 25 mm EPDM 1 314.00 Warenkorb
4 350814 25 butt fusion spigot or socket fusion spigot 32 mm EPDM 1 314.00 Warenkorb
5 350815 32 butt fusion spigot or socket fusion spigot 40 mm EPDM 1 386.00 Warenkorb
6 350816 40 butt fusion spigot or socket fusion spigot 50 mm EPDM 1 386.00 Warenkorb
7 350817 50 butt fusion spigot or socket fusion spigot 63 mm EPDM 1 386.00 Warenkorb
8 350818 10 screw joint with welded socket 16 mm EPDM 1 258.00 Warenkorb
9 350819 15 screw joint with welded socket 20 mm EPDM 1 262.00 Warenkorb
10 350820 20 screw joint with welded socket 25 mm EPDM 1 344.00 Warenkorb
11 350821 25 screw joint with welded socket 32 mm EPDM 1 348.00 Warenkorb
12 350822 32 screw joint with welded socket 40 mm EPDM 1 420.00 Warenkorb
13 350823 40 screw joint with welded socket 50 mm EPDM 1 434.00 Warenkorb
14 350824 50 screw joint with welded socket 63 mm EPDM 1 462.00 Warenkorb
15 350825 10 butt fusion spigot or socket fusion spigot 16 mm FPM 1 262.00 Warenkorb
16 350826 15 butt fusion spigot or socket fusion spigot 20 mm FPM 1 262.00 Warenkorb
17 350827 20 butt fusion spigot or socket fusion spigot 25 mm FPM 1 356.00 Warenkorb
18 350828 25 butt fusion spigot or socket fusion spigot 32 mm FPM 1 356.00 Warenkorb
19 350829 32 butt fusion spigot or socket fusion spigot 40 mm FPM 1 436.00 Warenkorb
20 350830 40 butt fusion spigot or socket fusion spigot 50 mm FPM 1 436.00 Warenkorb
21 350831 50 butt fusion spigot or socket fusion spigot 63 mm FPM 1 436.00 Warenkorb
22 350832 10 screw joint with welded socket 16 mm FPM 1 292.00 Warenkorb
23 350833 15 screw joint with welded socket 20 mm FPM 1 298.00 Warenkorb
24 350834 20 screw joint with welded socket 25 mm FPM 1 394.00 Warenkorb
25 350835 25 screw joint with welded socket 32 mm FPM 1 400.00 Warenkorb
26 350836 32 screw joint with welded socket 40 mm FPM 1 490.00 Warenkorb
27 350837 40 screw joint with welded socket 50 mm FPM 1 508.00 Warenkorb
28 350838 50 screw joint with welded socket 63 mm FPM 1 544.00 Warenkorb

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