Standard and Aseptic Throttling/Regulating Single Seat Valves - W68/W88/W98 Series

A modular family of "throttling or pressure control" valves that are the ultimate in: easy cleaning, high pressure, low maintenance design. With 11 standard bodies, 12 different actuators, 4 stem types, flush or standard adaptor, and a wide range of control tops, the valves can be configured to precisely fit any application.

Bodies machined from solid bar 316L with laser welded ports
Stems available with low and high flow Cv values
Seat ring inserts for very low Cv in 1" and 1½" bodies
Standard "S" clamps used to connect adaptors and bodies
Adaptor and Lower Bearing Carrier with inlet and discharge flush connections
High pressure capability
Seal options - Tri-Ring (FKM or EPDM for complete shut-off), or Metal Plug
Open yoke 3A design
Reverse (R) or standard plug design
Pneumatic Moore positioners - Uses 3-15 psi (.20-1.03 bar) pneumatic control signal and plant air supply to drive the seat plug into a certain position.
- Direct acting (as input increases, supply air increase)
- Reverse acting (as input increases, supply air decreases)
- Cost effective way to control the valve
Electropneumatic Bürkert positioners - Uses a 4-20mA electronic feedback signal between the valve stem sensor and a solenoid in the control top which adds or vents air into the actuator to move the plug seat up or down depending on the desired position.
- Positioner attaches right to the valve
- Includes all of the controlling functions within the unit
- Long service life
- Also available with bus communication (DeviceNet, Profibus) and additional control options

Throttling/Regulating Valve Models:

W68 Series - Throttling
W88 Series - Aseptic Stem Flush Throttling
W98 Series - Aseptic Diaphragm Throttling
W682 or W882 Series - Divert Throttling
W685 or W885 Series - Non-Slamming Divert Throttling

Product Literature: