Super Quality Stop Check Valves Manufactured By Maniks

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Super Quality Stop Check Valves

• By Maniks

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INDEX
Sr no Content
1 Stop check valve definition
2 How does a stop check valve work?
3 Stop check valve
4 Check Valve Feature
5 Check Valve Installation
6 Technical Data for Check Valves
7 Why Maniks Stop Check Valves?
8 Thanks You
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Stop check valve definition

• A stop-check valve, also called as a non-return
  stop check valve or check valve to stop flow of
  liquid regardless of flow direction or pressure.
• Stop check valves are mainly known for two main
  purposes 1) as a globe type valve, they isolate
  or regulate flow the flow of liquid and 2) stop
  check valve can be modified as a check valve, to
  prevent reverse flow.
• Because of this reason, having an appropriate
  stop check valve is like having two types of
  valves in one.

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How does a stop check valve work?

• Stop check valves are self-automated valves and
  they do not require any external control or human
  intervention, instead it relies completely on the
  flow of liquid to open and close.
• These valves typically have two openings, one
  for media to enter in the valve and other for the
  liquid to leave. In simple words, stop check
  valves allow a media to flow only in one
  direction and prevents fluid to flow in opposite
  direction. These valves are basically used
  everywhere, including

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Stop check valve
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Check Valve Feature

• 1) Applicable to HFC, HCFC, R717 (Ammonia) and
  R744 (CO2).
• 2) Can be used in all chemical as well as
  petro-chemical applications.
• 3) Easy and Fast valve overhaul service. It is
  easy to replace the top part and no welding is
  needed.
• 4) Designed to open at a very low differential
  pressure of 0.04 bar (0.58 psig).
• 5) Designed with built-in damping chamber which
  prevents valve flutter, in case of lower
  refrigerant velocity and/or low level density.
• 6) Easy to disassemble for service and
  inspection.
• 7) Internal back seating of the valve enables
  replacement of the spindle seal when the valve is
  active (under pressure). 8) Optimal flow
  characteristics that provides quick opening to
  completely open position.
• 9) Protection against pulsation by built-in
  damping facility.

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Check Valve Installation

• The check valve must be mounted vertically with
  the cone downwards. The valve is designed to
  resist very high internal pressure. However, the
  piping system in general should be designed to
  avoid liquid traps and reduce the risk of
  hydraulic pressure caused by thermal expansion.
• For further information about check valves refer
  to installation instructions for MSCHV-X/ MSCA-X.
  If cold refrigeration oil having low viscosity
  enters and settles in the damping chamber,
  problems with the check valve may arise.
  Consequently, it may be necessary to modify the
  valve for more viscous liquids by enlarging the
  hole to the damping chamber.

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Technical Data for Check Valves

• Refrigerants Applicable to HCFC, HFC, R744 (CO2)
  and R717 (Ammonia). For further details refer to
  product instruction for MSCHV-X/ MSCA-X.
• It looks same as a globe valve on the outside,
  however, it is essentially a lift check valve
  provides with a manual control to regulate
  continuous opening and closing, and to be
  completely stopped. These valves are basically
  applied in power plants, in applications like
  steam generator, starter water, boiler
  circulation, turbine cooling, boiler feed water,
  and safety systems.

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Why Maniks Stop Check Valves?

• Maniks Stop check valves are like having two
  valves in one 1) as a globe type valve, they
  isolate or regulate flow the flow of liquid and
  2) stop check valve can be modified as a check
  valve, to prevent reverse flow. They provide a
  comparatively efficient and economic solution
  where regulation, isolation and prevention of
  backflow of fluid are required as performance
  characteristics for a piping system.
• 
  http//www.maniks.com

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• Thanks You