The non-rising stem gate valve is designed for applications where vertical space is limited. Unlike rising stem valves, the handwheel rotates the stem which moves the gate up and down internally without the stem itself rising. This compact design makes it ideal for underground installation or systems with low headroom. It features a robust cast iron body with brass or stainless steel sealing surfaces for reliable shut-off.
Technical Specifications:
Nominal Diameter (DN): DN50 – DN300
Nominal Pressure (PN): 1.6 MPa (PN16)
Test Pressure (Shell/Water): 2.4 MPa
Test Pressure (Seal/Water): 1.76 MPa
Suitable Temperature: ≤ 100°C
Applicable Medium: Water, Vapor
Main Parts and Materials:
Parts Name
Materials
Body, Bonnet
GG25/GGG50
Disc
GG20
Stem
2Cr13
Seat Ring
2Cr13/304/Brass
Product Features:
Compact Design: The non-rising stem mechanism ensures the overall height of the valve remains constant during operation, making it perfect for spaces with height restrictions or underground piping.
Durable Sealing: Sealing surfaces are made of Brass or Stainless Steel (SS304), providing excellent corrosion resistance and a tight seal for water and vapor applications.
Heavy-Duty Construction: Larger sizes (DN200–DN300) utilize GGG40 Ductile Iron for the body to withstand higher mechanical stresses.
Low Flow Resistance: The full-bore straight-through design minimizes pressure drop across the valve.