Glossary
If you have not yet to do with industrial valves, learn some basic terms that ease planning and coordination during the course of the project.
From A to Z
- Butterfly Valve
A butterfly valve consists of a body and is for flow regulation. Clamped between flanges.
- Centering Aid
Lugs right and left of the operating side shaft outlet of the valve. They ensure easier and more precise installation into a pipeline.
- Closing
Contact of the valve disk with the body. Possible seals: Striking, swing through, with stop bar and stop bar with seals.
- Coupling
Connection between the actuator and the valve shaft.
- Electric Operation
Electric operation of the valve. Control over 4 .. 20 mA-signal possible. Wide ranging optional accessories available.
- Element
Element flowing through the valve. (Gas, liquid, etc.)
- External Seal
Used at high temperatures to guarantee the turning of the valve at all operating conditions.
- Fine Adjustment
Lever which has a free swing variance of 90° and is movable per wing screw or clamp lever into any position.
- Fitting Key
Metallic adaption of the shaft to the actuator. This is a side connected metal lug on the shaft. Serves for power transfer from the actuator to the shaft.
- Flange Bearing
Serves as transmission of high torques.
- Four Cornered Shaft
Serves for the adaption of the shaft to the required connection of the actuator.
- Grid Handle
Gear teeth on a nut screwed scale provides the possibility of a gradual adjustment of the valve disk. The catch of the hand lever locks into the teeth. 16 positions between 0 and 90 ° are fixed.
- Hand Operation
With grid handle, fine adjustment or worm gear. Depending on installation.
- Hydraulic Operation
Operates with a hydraulic cylinder. Special: Good power distribution in limited spaces.
- Impermeability
Shows how impermeable the flow is inside the valve. (Dependant on construction, classified in leakage rates).
- Inner Sizing
Internal flow area of the valve.
- Installation Position
Describes the horizontal or vertical position of the shafts of the valve once installed.
- ISO 5211
Norm regulates the attachment measurements for actuators to attachment parts onto valves.
- Kv 90°
Flow in a fully open valve disk.
- Lever System
It regulates two or more valves with an actuator.
- Mounting Kit
Normed part for mounting actuators.
- Nominal Size
Size of the inner measurement of the valve.
- Operation
Operation of the valve. Possible operation: manual, pneumatic- und electric actuators (as standard). All further adaptions available as per customer needs.
- Operational Pressure
Pressure in the pipeline which works on the valve.
- Operational Temperature
Temperature of the element in the pipeline.
- Packing Gasket
Serves as the seal between the valve and shaft exit from the valve body. Can be produced in various ways. (EPDM, PTFE, TA-Luft eg.)
- Pneumatic Operation
Opening of the disk in the valve with a pneumatic actuator. With or without a spring setting. Control possible with a positioner.
- RDST-32
Infinitely adjustable fine adjustment for larger valves.
- Safety Position
This is decided by the customer. Defines the position of the valve in an emergency.
- Seal
Flexible material in the valve. To improve the impermeability.
- Sealing Air
Used to seal the shaft up to 100%.
- Service
Defines the regular necessary readjustments (readjustment of the packaging, etc.). For the maintenance plan please see operating and maintenance manual.
- SFD-6
Infinitely adjustable fine adjustment with a manual handle, used in smaller valves.
- Shaft Bearing
Bears of the shafts in the body.
- Slide Bearing
Turned sleeve, e.g. from red brass.
- Step-seated
Disk valve fitted in the body of the valve and stops the flow.
- Stop bar
Metallic valve stop in the valve. Serves to seal the valve.
- Swing-through
Valve without seals between the disk and body with defined ring gap.
- TA-Luft
German Clean Air Act (§48 BImSchG). Using a TA-Luft packing ensures 100% seal of the shaft bushing to the outside.
- Leider keine Treffer für diesen Begriff
