F4 Resilient Seated Gate Valve (NRS) DIN 3352
Our F4 resilient seated gate valve is designed and manufactured to DIN 3352, with face-to-face dimensions per DIN 3202-1 (Series F4). It combines the proven performance of a rubber-encapsulated wedge with European-standard dimensions for full interchangeability across municipal and industrial water installations.
The ductile iron body, bonnet, and cap are cast from high-grade GGG50 for strength and long service life. The wedge is ductile iron fully encapsulated in EPDM, providing a bubble-tight shutoff against zero pressure in either flow direction. The stem is precision-machined from stainless steel 2Cr13, and the NRS stem nut is cast brass, giving smooth, reliable operation over thousands of cycles. All sealing elements are EPDM for long-life water service.
The non-rising stem (NRS) design keeps overall height compact — the stem operates internally through the brass stem nut without rising — making this valve ideally suited for buried service, valve pits, and confined installations. With flanged ends drilled to EN 1092-2 and rated for PN10 / PN16, all wetted surfaces are protected by a blue fusion-bonded epoxy coating, and every valve is pressure-tested to EN 12266-1 before shipment.
- Size Range: DN40-DN1000
- DIN Standard Interchangeability: Design per DIN 3352, face-to-face per DIN 3202-1 (Series F4); flanged ends per EN 1092-2.
- Non-Rising Stem (NRS): Compact height with internal stem operation; ideal for buried service, valve pits, and confined installations.
- Bubble-Tight Shutoff: Ductile iron wedge fully encapsulated in EPDM provides drop-tight sealing in both flow directions.
- Precision Stainless Stem: Stem machined from stainless steel 2Cr13 for corrosion resistance and long operating life.
- Brass Stem Nut: Cast brass stem nut delivers smooth, low-torque NRS operation over thousands of cycles.
- Superior Castings: Body, bonnet, and cap in ductile iron GGG50 for strength and impact resistance.
- Full EPDM Sealing: Gaskets and O-rings in EPDM for long-life water service.
- Pressure Ratings PN10 / PN16: Suitable for water supply, wastewater, and general industrial systems.
- Corrosion Protection: Blue fusion-bonded epoxy coating on all wetted surfaces.
- Tested to International Standard: 100% pressure-tested to EN 12266-1 before shipment.

