Gate Valve - Parallel Slide - DIN | Valvosider

Name: Gate Valve - Parallel Slide - DIN | Valvosider
Brand: Valvosider
SKU: Gate Valve - Parallel Slide - DIN | Valvosider

Valvosider Parallel Slide Gate Valve According to DIN

The Valvosider Parallel Slide Gate Valve is designed for flow isolation in high-pressure and high-temperature lines, primarily for steam, superheated steam, boiler feedwater, condensates, and thermal circuits. It is not a throttling valve; it operates fully open or fully closed. Partial open positions increase wear on seats and discs.

Parallel Slide Operation Logic

Unlike the traditional wedge design, the parallel slide configuration uses parallel discs. Sealing is achieved by the medium's pressure and/or a disc spreading mechanism, without significant wedging in the body. This is beneficial in thermal cycles where expansion can cause sticking in conventional wedge gate valves.

DIN Pressure Seal Versions

Valvosider documentation links the DIN version with pressure seal gate valves PN100, PN160, PN250, PN320, and PN420, with standard diameters DN50–DN600 and face-to-face F8. Types are referred to as P24 to P28.

Construction and Standards

Round body, pressure seal bonnet
OS&Y, rising stem, non-rising handwheel
Integral backseat, welded-in seats
Design: DIN 3352 / DIN 3840
Face-to-face: DIN 3202
Flanges: DIN 2501 / DIN 2547 / DIN 2526 Form E
BW ends: DIN 3239
Testing: DIN 3352 Part 1 / DIN 3230 Part 3
Marking: EN 19, CE/PED, certificates EN 10204 3.1B

Materials and Sealing

Body materials available include 1.0619, 1.5419, 1.7357, 1.7379, 1.4581. Seat and disc surfaces can be provided with hard facing, Stellite, Monel, or Hastelloy upon request. Stem sealing is achieved with graphite rings and wiper rings.

Options

Available options include ISO 5210 top flange, gear reducer, chain wheel, electric, pneumatic or hydraulic actuator, position indicator, limit switches, interlock, stem extension, live-loaded packing, drain plug, and by-pass.