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Industrial Valves / Product Family

Knife Edge Gate Valves

Compare AMCO's uni-directional and bi-directional knife edge gate valves, including wafer / lugged and flanged connections, resilient and metal seat options, and two-piece designs. Find the configuration that matches your piping requirements.

Explore 8 configurations

Product family overview

Choose by flow direction, connection and seat type.

  • Uni-directional
  • Bi-directional
  • Wafer / lugged
  • Flanged
  • Resilient
  • Metal
  • Two-piece
Uni-Directional Wafer Lugged Resilient Seat View 1
Currently listed on AMCO
8 configurations
Currently listed on AMCO
Uni-directional / Bi-directional
2 directions
Uni-directional / Bi-directional
Wafer / lugged / Flanged
2 connections
Wafer / lugged / Flanged
Resilient / Metal
2 seats
Resilient / Metal

Browse by specification

Knife edge gate valve range

Every configuration below links to its own product page with full specifications, materials and dimension tables. Filter by flow direction, end connection, seat type, construction.

Showing 8 of 8 configurations

  • Uni-directional

    Wafer Lugged Resilient seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Uni-directional
    End connection
    Wafer / lugged
    Seat type
    Resilient
    Construction
    Standard
    View specifications
  • Uni-directional

    Wafer Lugged Metal seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Uni-directional
    End connection
    Wafer / lugged
    Seat type
    Metal
    Construction
    Standard
    View specifications
  • Uni-directional

    Flanged Resilient seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Uni-directional
    End connection
    Flanged
    Seat type
    Resilient
    Construction
    Standard
    View specifications
  • Uni-directional

    Flanged Metal seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Uni-directional
    End connection
    Flanged
    Seat type
    Metal
    Construction
    Standard
    View specifications
  • Bi-directional

    Wafer Lugged Resilient seat PN10# - Single piece design

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Bi-directional
    End connection
    Wafer / lugged
    Seat type
    Resilient
    Construction
    Standard
    View specifications
  • Bi-directional

    Flanged Resilient seat PN10# - Single piece design

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Bi-directional
    End connection
    Flanged
    Seat type
    Resilient
    Construction
    Standard
    View specifications
  • Bi-directional · Two-piece

    2 piece design Wafer Lugged Resilient seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Bi-directional
    End connection
    Wafer / lugged
    Seat type
    Resilient
    Construction
    Two-piece
    View specifications
  • Bi-directional · Two-piece

    2 piece design Flanged Resilient seat PN10#

    Knife edge gate valve · Size DN50 - DN1000. Review this configuration's dimensions, materials and operation options on the product page.

    Flow direction
    Bi-directional
    End connection
    Flanged
    Seat type
    Resilient
    Construction
    Two-piece
    View specifications

Engineering selection support

How to choose the right configuration

Use these distinctions to narrow your shortlist, then confirm the final specification with AMCO's engineering team.

Uni-directional vs bi-directional

The valve's intended differential-pressure direction matters when specifying a knife edge gate valve.

  • Uni-directional: evaluate the intended sealing direction and installation orientation.
  • Bi-directional: evaluate the need for sealing under differential pressure from either direction.
  • Shutoff: confirm the actual shutoff performance and operating limits in the model datasheet.

Connection and seat selection

Choose based on the pipeline interface and process requirements, not product naming alone.

  • Wafer / lugged or flanged: match flange dimensions, bolting and installation clearance.
  • Resilient or metal seat: confirm fluid compatibility, temperature and leakage requirements.
  • Two-piece design: review the construction and maintenance drawings for the exact model.

Quick comparison

Compare the available designs

A side-by-side view of the design groups in this range and the options each one covers.

Design groupFlow directionEnd connectionSeat typeConstructionProduct options
Uni-directionalUni-directionalWafer / lugged, FlangedResilient, MetalStandard4 variants
Bi-directionalBi-directionalWafer / lugged, FlangedResilientStandard2 variants
Bi-directional · Two-pieceBi-directionalWafer / lugged, FlangedResilientTwo-piece2 variants

Common buyer questions

Knife edge gate valve FAQs

What is the difference between uni-directional and bi-directional knife edge gate valves?

The distinction concerns the intended direction of differential-pressure sealing. Review the valve design and installation orientation, and confirm the model's actual sealing performance with AMCO before selection.

Which flow direction options are listed for AMCO Knife Edge Gate Valves?

AMCO lists Uni-directional, Bi-directional options in this range. Open each product page for its size range, materials of construction, standards and dimension tables.

Which end connection options are listed for AMCO Knife Edge Gate Valves?

AMCO lists Wafer / lugged, Flanged options in this range. Open each product page for its size range, materials of construction, standards and dimension tables.

What information should I send to request a knife edge gate valve quotation?

Share the valve size, pressure rating, end connection, line media, operating pressure and temperature, preferred materials, mode of operation and quantity. Mention any certification or inspection requirements so AMCO can confirm the right configuration.

Need help specifying a knife edge gate valve?

Share your line conditions and required configuration to request a technical quotation.