General Information
The HCV valve is a quarter-turn valve with a segmented sphere or Hemi and a top entry
cartridge design that fits within the valve housing while supporting opposed upstream and
downstream sealing components. The Hemi rotates around a stationary core which directs the
flow through the valve. The Hemi sealing area, seat ring, and internal trim parts are not directly
exposed to the flow stream when the Hemi is in the open position. The spherical offset Hemi
design provides low pressure and low differential pressure sealing characteristics as well as
increased capability to seal at high pressure. This design will increase the life of the seat insert
by reducing its mechanical load in the full open position. The spherical offset of the Hemi
increases the sealing forces mechanically in the closed position in addition to the pressure
energized piston sealing characteristic. The valve is bi-directional. There is a preferred or
normal flow direction which provides optimum sealing performance and seal life, especially in
dirty or contaminated fluids. If flow and pressure are in the non- preferred direction, the
pressure energized seat ring provides sealing. The valve internal components, such as the
seat, Hemi, core, seals, and bearings are all contained in the cartridge assembly and the
parallel machined body allows for easy installation and removal of the cartridge in the field with
minimal time and effort. The valve can be provided with the operating options illustrated below.
Other options are available upon request. Gears, actuators, and levers are referred to as
operators in the manual.
Storage
Inspect for any damage that may have occurred during shipment prior to storage and contact
your shipper immediately if damages exist. Valves are drained and flange faces are coated with
rust inhibitor and flange protectors are installed. Valves and actuation equipment protective
covers should remain in place until the valve is ready to be installed in the line. Valves and
actuation equipment should be stored inside to protect them from harsh environment
including humidity and dust. Valves are shipped in the opened position, with the exception of
Fail-Close systems, and should be stored in the as shipped condition. For special long term
storage requirements on actuation equipment refer to applicable actuation manuals.
Unpacking
Remove any packing material, valve flange protectors, and protective covers from actuation
equipment. Inspect the valve bore for foreign objects and, if necessary, clean the valve body.
Handling equipment must be provided which is appropriate for lifting the valve and actuator
assembly safely into position. Use slings, end flanges or eyebolts in the provided tapped holes
on the valve. Do not use the lifting lugs or eyebolts on the actuator to lift the total assembly. Pay
attention that slings or braces do not damage the actuator or gear.
Pre-installation Safety Information
The valves shall be installed, operated, and maintained in accordance with these procedures.
Always follow standard safety procedure set forth by the law and regulations required by your
employer, end-users, and jurisdiction authorities. Any transportation, unpacking, lifting,
installation, operation, and maintenance of the system shall be made by expert, trained, and
qualified personnel.
HCV
Valve
Installation,
Operation, and
Maintenance Manual
WARNING:
When lifting a valve with an attached actuator assembly, be aware that the center of
gravity may be above the lifting point. Additional support must be provided to prevent the valve and
actuator assembly from flipping or rotating. Failure to do so can cause serious injury to personnel
and/or damage to the equipment.
Lever Operated
Adapted for Actuator
Gear Operated
Pneumatic/Electric Actuator
IOM HCV 001 09-2019A
