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Seat sealing

Soft seats are standard. Seat inserts of synthetic material such as Nylon.
PTFE, RTFE, or Peek are contained within a one-piece metal seat ring with no or very low line pressure.
Sealing between the seats and ball is achieved by seat spring with higher line pressure.
The line pressure, in conjunction with the spring load, forces the upstream seat ring against the ball, which results in tighter sealing.

Seat sealing

Soft seats are standard. Seat inserts of synthetic material such as Nylon.
PTFE, RTFE, or Peek are contained within a one-piece metal seat ring with no or very low line pressure.
Sealing between the seats and ball is achieved by seat spring with higher line pressure.
The line pressure, in conjunction with the spring load, forces the upstream seat ring against the ball, which results in tighter sealing.

Self Relieve Seat

This feature is designed to prevent excessive pressure build up within the valve by automatically, relieving pressure when body cavity pressure exceeds the spring load on the seats.
Double Piston Seat is also available as and option.

This is designed according to the MSS SP-61, 81(Class 150LB) and MSS SP-135 (Class 150LB, 300LB).

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 v/v 150LB, 300LB in particular.

1. DESIGN
MSS SP-61, 81
MSS SP-135
Flange Standard ASME B16.5, Class 150LB/300LB.
Combination of half circle blade-type gate and Rubber seat/Metal seat.
Bonnt type and Bonnetless type allows various operations.

2. PRODUCTS FEATURES
Patent product that improved seat structure from the previous knife gate valve
Zero leakage
Wide usable range
No categorization for installation direction

3. SPECIFICATIONS
Standard : MSS SP-61, 81, 135 ASME B16.5
Size : ANSI 150#/300# 248
JIS 10K/20K 50A1200A
Material : A536, A216-WCB, LCB, A351-CF8/CF8M, A351-CF3/CF3M, CG-8M CD4MCU, Titanium, Etc

This is designed according to the MSS SP-61, 81(Class 150LB) and MSS SP-135(Class 150LB, 300LB)

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 KCL manufactured according to the MSS standard, shall not exceed the maximum leakage allowance of 40ml/min/NPS(1.6ml/min/DN) for the pressure of 40psi(2.8bar).

1. DESIGN
MSS SP-61, 81
MSS SP-135
Flange Standard ASME B16.5, Class 150LB/300LB.
Combination of half circle blade-type gate and Metal seat.
Bonnet type and Bonnetless type allows various operations.

2. PRODUCTS FEATURES
Designed to apply to residue, paper sediment, and corrosive liquid.
Perfectly controls flow of liquid through the knife processed with a certain straightness

3. SPECIFICATIONS
Standard : MSS SP-61, 81, 135 ASME B16.5
Size : ANSI 150#/300# 248
JIS 10K/20K 50A1200A
Material : A536, A216-WCB, LCB, A351-CF8/CF8M, A351-CF3/CF3M, CG-8M CD4MCU, Titanium, Etc