Alfa Laval LKC-2 Non-return Valve

The Alfa Laval LKC-2 non-return valve (check valve) prevents the reverse flow of fluids and is specially designed for use in stainless steel pipe installations. LKC-2 Non-return valves are highly reliable check valves ensure single directional product flow through process lines. This provides protection for process equipment that can be affected by reverse flow and prevents pressure surges and/or system shutdown.

Product Benefits

Temperature
Max. temperature: 140°C (EPDM)
Min. temperature: -10°C
Pressure
Max. product pressure: 1000 kPa (10 bar)
Mechanical
Required differential pressure for opening the valve when fitted in a vertical pipe, as shown in fig. 3, is approx. 6 kPa (0.06 bar)
Materials
Product wetted steel parts: 1.4301 (304) / 1.4404 (316L)
External surface finish: Bright (Machined Ra 1.6)

Internal surface finish: Bright (polished), Ra < 0.8 µm

Product wetted seals: EPDM rubber

Technical Data

The Alfa Laval LKC-2 non-return valve consists of an upper valve body, lower valve body, valve plug, seal ring, and guide disc. The valve body is assembled by means of a clamp and hygienically sealed with a special seal ring. A guide disc and four legs guide the spring-loaded valve plug with an O-ring seal. LKC-2 has welding ends for ISO or DIN connections.

Working principle

The spring acts on the valve plug, keeping the valve closed until the force from the pressure in the inlet exceeds the force of the spring. If a reverse flow should occur, the spring force and the pressure from the outlet will keep the valve closed.

Application

Various processes throughout the sanitary industry

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