TVI Valves
Custom Valve Solutions
  • Soft Seat Knife Gate Valves

    This is designed according to the MSS SP-81 (Class 150 LB) and MSS-135 (Class 150 LB, 300 LB) General knife gate valves are designed to be suitable for the control of fluids of large particles such as dregs, sediments, etc.

    In addition, this is of a metal seat type, so there are an allowed criterion for water leakage and a direction, and thus the installation direction shall be considered when installing a valve.

    The soft seat type has no allowed criterion of water leakage and is designed to be easily installed in both directions. In addition, this can be used in a pure liquid state of fluid line as well to replace other kinds of valves already installed, and was developed to avoid seat leakage even under a pressure of soft seat knife gate valve 150 LB, 300 LB in particular.

    The customers shall discuss with Donghae Co., Ltd. to determine valve construction according to the fluid used and the installation environment.

  • Hand Wheel Operated Bonnet, Packing, and Gland Type Soft Seat Knife Gate Valves
  • Metal Seat Knife Gate Valves

    This is designed according to the MSS SP-81 (Class 150 LB) and MSS-135 (Class 150 LB, 300 LB) General knife gate valves are designed to be suitable for the control of fluids of large particles such as dregs, sediments, etc.

    In addition, this is of a metal seat type, so there are an allowed criterion for water leakage and a direction, and thus the installation direction shall be considered when installing a valve.

    Metal seat knife gate valve of Donghae Co., Ltd., manufactured according to the MSS standard, shall not exceed the maximum leakage allowance of 40 ml/min/NPS(1.6 ml/min/DN) for the pressure of 40 psi(2.8 bar).

    The customers shall discuss with Donghae Co.,Ltd. to determine valve construction according to the fluid used and the installation environment.

  • Slide Gate Valves