CONTROL VALVES
Series E Globe Valves
Series EW Globe Valves
Series D Globe, DA Angle Valves
Series H1500 LB.
Series HPX and Series HPAX
Series V100
Series 128PQC
Valve Trim
ESD
ACTUATORS
CONTROLLERS
REGULATORS
POSITIONERS
670 MANUAL LOADING STN

7970 PRESSURE SENSOR

2000 PRESSURE PILOT

CENTRIFUGES
CHEMICAL PUMPS
THERMOMETERS
DEW POINT TESTERS
GAUGES
NORRISEAL CONTROLS
OTHER

CONTROL VALVES - Series 128PQC

The CVS Series 128PQC Control Valve body assemblies are suitable for on-off dump valve service in oil and gas production applications, in either sweet or sour gas conditions. These valves are also useful for on-off high-pressure control of numerous gasses and liquids, and can be used with materials that are viscous or erosive.

This is a single port valve with unbalanced stem-guided valve plug, and push- down-to-close valve plug action. Operated by a Type 128 spring-and-diaphragm actuator, the assembly can be operated in a normally open or normally closed application. This setting can be reversed in the field with minimum disruption and no additional parts.

CVS Type 128PQC is a 1-inch Control Valve, standard configuration is with a solid pipe plug threaded into the bottom connection for straight-through flow. To convert the control valve to angle flow, the pipe plug can be installed in the left port.

Note: This configuration from straight-through flow to angle flow can be achieved in the field.

The CVS Series 128PQC valve is available with soft-seat, cageless soft seat, or all metal seat construction. All configurations have push-down-to-close valve plug action.

The valve plug shuts off against the integral seat ring in the cage, except in cageless soft-seat construction, where the shut-off is against the seat which is cut into the web of the valve body. Rotation of the valve plug is limited with the use of a nylon insert in the valve plug thread.