






Transversal gasket

Peripheral gasket

Flushing points
Knife Gate Valve DN50-400
![]() | The knife gate valve is an ON-OFF gate valve for mudded waters. Its bevelled rectangular shovel, sliding inside a body with a circular outlet as well as its tightness system WEY® in the two flow directions, fit particularly well the transport of mudded fluids. This valve is used for raw wastewaters, mud, water with sediments, in sewage works and sewage pipes under pressure. Sure and indestructible
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Range
The knife gate valve is available from DN50 to DN1200 for a setting between flanges.
DN | PFA | Drilling template |
mm | bar | |
50-150 | 10 | ISO PN 10-16 |
200 | 10 | ISO PN 10 |
250-300 | 6 | ISO PN 10 |
350-400 | 4 | ISO PN 10 |
For the other diameters refer to
RASRV28VAG800
andRASRV28VAG900
Motorized version
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Dimensional particularity for installation
The bolt holes ref. B are threaded.
The length of the bolts (B) must be adapted to the maximum screw depth on the valve, so that the gate is not blocked.
The bolts C pass outside the valve body.
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DN | Valve assembly | Nb of bolts + nuts per valves (case C) | |||
Nb of screwed bolt holes (case B) | Nb of bolts per valve (case B) | Maximum screw depth | Threaded | ||
50 | 4 | 8 | 17 | M16 | |
65 | 4 | 8 | 17 | M16 | |
80 | 4 | 8 | 17 | M16 | 4 |
100 | 4 | 8 | 20 | M16 | 4 |
125 | 4 | 8 | 22 | M16 | 4 |
150 | 4 | 8 | 21 | M20 | 4 |
200 | 4 | 8 | 23 | M20 | 4 |
250 | 6 | 12 | 19 | M20 | 6 |
300 | 6 | 12 | 23 | M20 | 6 |
350 | 8 | 16 | 20 | M20 | 8 |
400 | 6 | 12 | 28 | M24 | 10 |
Material and coating
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Item | Designation | Material | Coating |
1 | Hand wheel | Epoxy power average thickness 75µm, grey colour | |
1b | Actuator Auma | Epoxy power average thickness 75µm, grey colour | |
2 | Superior stand | Sheet steel | Epoxy power average thickness 75µm, grey colour |
3 | Body | Ductile Iron EN GJL 1040 | Epoxy power average thickness 175µm, grey colour |
4 | Screw | Steel Type Z13CF17 | |
5 | Operating nut | Bronze | |
6 | Transversal Gasket | Nitrile | |
7 | Gate | Steel Type Z7CN18.09 | |
8 | Hemispherical Joint | Nitrile |
Specificity
Transversal gasket![]() |
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Peripheral gasket![]() |
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Flushing points![]() |
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Conformity to Standards
Dimensional
- distance between flanges: - ISO 5752 - NF E 29305-1 - DIN 3202
- drilling template of flanges: - ISO 7005 PN 10-16 - NF E 29206 - DIN 2532
Operating stem under frame, according to the regulation on personnel security.
Functional
- tightness test on every valve to1.1 PFA according to: - ISO 5208 - NF E 29311 - DIN 3230 Part 3
Marking
A marking of foundry is present on the body. The indication PN10 or PN16 refers to the drilling template whereas PB 4 or PB 6 corresponds to PFA 4 or 6 bars.
An identification plate PAM S.A. indicates the type, the serial number, the DN as well as the PN.
Accessories
The gate valve can be equipped with a contactor that stops the flow.
Setting, servicing, maintenance
- Assembly direction: place the bevelled part of the gate upstream.
- The knife valve is integrated between flanges. Provide the self-restrained dismantling joint type PF and flange gaskets. Note: for the setting, see absolutely that screws respect the maximum screwing depth so as they do not block the gate.
- During the use, it is possible to compress the superior transversal gasket thanks to side screws.