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NRS Gate Valve, Rubber Seated, AS2129 Flanged
Resilient Seated Gate Valve
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NRS Gate Valve, Rubber Seated, AS2129 Flanged

Series: KF-GV-AWWA

Size: DN40-1200mm, NPS 1.5”- 48”

Main Material: GGG50 / ASTM A536

Pressure Rating: PN16

Certificate: ISO, CE, WRAS, ACS

Sample: Available

Service: OEM & ODM

The Gate Valve (Flanged, Rubber Seated, AS2129 E) is a resilient-seated gate valve with a rotating non-rising stem, designed to close clockwise. Suitable for drinking water and neutral liquids up to 70°C, it ensures reliable shut-off with its rubber-seated construction.

For sizes DN400 to DN600, the valve can be operated manually via handwheel or gearbox, or with an electric actuator. For DN800, operation must be through a gearbox or an actuator capable of handling axial thrust loads, ensuring durability in demanding installations. This valve is widely used in water supply and neutral fluid systems where tight sealing and robust performance are essential.

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    Features
    Specifications
    Dimension

    Features

    Low Flow Resistance

    Full-channel design of the valve body

    Valve Design

    Non-rising Stem

    Leakage Level

    Bubbles-tight sealing with no leakage

    Performance

    Long service life and reliable sealing performance

    Low Torque

    Operation easy and flexible

    Bidirectional Sealing

    Unlimited flow direction and easy to install

    Coating Grade

    Conventional and special conditions of C1-C5 & CX

    Wide Application

    Water treatment, Sewage system, etc

    Certificates

    ISO9001, CE, WRAS, ACS

    Specifications

    Design Standard

    AS2638.2

    End Flange Standard

    AS2129 Table E, Table D

    Face to Face Dimension

    AS2638.2, BS 5163

    Testing Standard

    BS 12266-1

    Temperature

    -20℃~80℃ (depends on the sealing material)

    Body Material

    Ductile Iron (GGG50)

    Disc Material

    Ductile Iron+EPDM/NBR

    Shaft Material

    Stainless Steel

    Seal Material

    EPDM, NBR

    Operator

    Hand wheel, Gearbox, Pneumatic, Electric Actuator

    Dimension

    Size L Table E b
    Ф D Ф D1 n - Ф d
    DN40 165  135  98  4-14 16
    DN50 178  150  114  4-18 19
    DN65 190  165  127  4-18 19
    DN80 203  185  146  4-18 19
    DN100 229  215  178  8-18 22
    DN125 254  255  210  8-18 22
    DN150 267  280  235  8-22 22
    DN200 292  335  292  8-22 25
    DN250 330  405  356  12-22 25
    DN300 356  455  406  12-26 29
    DN350 381  525  470  12-26 32
    DN400 406  580  521  12-26 32
    DN450 432  640  584  16-26 35
    DN500 457  705  641  16-26 38
    DN600 508  825 756  16-33 40
    Gate Valve, Flanged, Rubber Seated, AS2129 D

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      RAQ

      What is a gate valve? +
      A gate valve is a linear-motion valve designed to start or stop fluid flow (liquids or gases) in a pipeline. It operates in either a fully open or fully closed position and is not intended for throttling or flow regulation—unlike globe valves or ball valves, which are better suited for modulating flow rates.
      What materials are available for NRS gate valves? +
      They are commonly available in ductile iron, cast iron, with seat options like EPDM or NBR depending on the application.
      What are the advantages of NRS gate valves? +
      Non‑rising stem (NRS) gate valves are ideal for tight spaces since the stem does not move vertically. They protect stem threads from corrosion and reduce packing wear, ensuring longer service life. Most models include an external position indicator, making them a durable choice for buried or confined installations.
      Which way do you turn a gate valve to open it? +
      To open a gate valve, you typically turn the valve handle or operating mechanism in a counterclockwise direction (to the left). This action raises the internal gate or wedge to create an unobstructed pathway for fluid flow. Conversely, turning the handle in a clockwise direction (to the right) closes the valve by lowering the gate, obstructing the flow and sealing the passage.
      Is this gate valve suitable for use on water? +
      Yes, gate valves are highly suitable for water applications. They are commonly used in water treatment, irrigation, cooling water systems, and distribution pipelines due to their rugged cast iron or ductile iron construction, positive wedge‑type sealing that ensures zero leakage in both directions, and a full‑bore passage that minimizes pressure loss when fully open.
      NRS Gate Valve, Rubber Seated, AS2129 Flanged

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