GB Cast Stem Soft-Seal Gate Valve

This GB cast stem soft-seal gate valve is designed for shut-off applications in pipeline systems. The valve body is made of ductile iron, offering good strength and durability for long-term service. The resilient seated gate structure enhances sealing performance and minimizes leakage. Featuring flanged ends and manual operation, it is widely used in municipal water supply and general industrial piping networks.

  • Pressure Rating:1.0 – 42.0 MPa

  • Size Range: 1/2″ – 60″ (DN 15 – DN 1500)

  • Working Temperature: -29°C to 266°C

  • Standards: GB

  • Materials: Carbon Steel, Stainless Steel, Alloy Steel, Special Alloys

  • Operation: Manual, Gear, Electric, Pneumatic

Structural Characteristics of

  • The soft seated structure provides reliable surface contact even under low-pressure conditions, compensating for minor machining tolerances and achieving superior shut-off performance.

  • The rising stem structure allows the stem to move upward and downward together with the gate, offering a clear visual indication of valve position for easier operation and monitoring.

  • Manufactured from ductile iron, the valve body provides excellent mechanical strength and impact resistance, suitable for frequent operation in municipal and industrial pipeline systems.

  • The full bore internal passage minimizes flow resistance, helping maintain stable flow and reduce energy loss within the pipeline.

  • Equipped with GB standard RF flanged ends, the valve ensures strong connection strength and reliable sealing for PN16 pipeline applications.

  • Commonly used in water supply, HVAC systems, municipal pipelines, and general industrial services, especially where frequent operation and reliable sealing are required.

Main Components Material

NameMaterial
Body / BonnetCF8CF3CF8MCF3MWCBLCBWC6WC9C5
WedgeCF8CF3CF8MCF3MWCBLCBWC6WC9C5
StemF304F304LF316F316L2Cr13F304F304F304F304
Stem NutAluminum Bronze
PackingPTFE / Flexible GraphiteGraphite
GasketPTFE / Metal Wound GasketGraphite
GlandCF8CF3CF8MCF3MWCBLCBWC6WC9C5
BoltStainless Steel35CrMoA
NutStainless Steel45, 35CrMoA
HandwheelCast Steel

Class 150LB Main Connection Dimensions

DNSIZELDD1D2bfn-ΦdHD0
151/2″1089060.334.91024-16158100
203/4″11710069.942.910.924-16163100
251″12711079.450.811.624-16193125
321-1/4″14011588.963.513.224-16250160
401-1/2″16512598.47314.724-16285160
502″178150120.792.116.324-19325180
652-1/2″190180139.7104.817.924-19350190
803″203190152.412719.524-19380200
1004″229230190.5157.224.328-19460230
1255″254255215.9185.724.328-22630250
1506″267280241.3215.925.928-22635260
2008″292345298.5269.92928-22765290
25010″330405362323.830.6212-26895330
30012″356485431.838132.2212-261080350
35014″381535476.3412.835.4212-291295380
40016″406595539.8469.937216-291435400
45018″432635577.9533.440.1216-321625430
50020″457700635584.243.3220-321830450
60024″508815749.3692.248.1220-352175500

Why Choose YAYE

Get a Quote

    Download Catalog