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Service & Suport
W68 / W88 / W98 Series - Throttling/Regulating Single Seat Valves
Throttling or regulating valves are designed for flow and pressure control applications. Fluid flows against the tapered curve of the valve seat allowing a calculated amount of flow through as it opens and closes. The throttling valve is typically equipped with a positioner. Throttling valves are used for flow control, pressure control, filler level control, and modulated filling. Delivering Single Seat Valves Faster Than Ever Don't let a valve shortage halt your progress. Our new Quick Ship Delivery Program in the US allows you to receive new or replacement WCB Single Seat W60 valves including W61 shut-off, W62 divert and W68 throttling valves, in five working days or less*.*.
*Conditions apply click here to learn more and find out how we can help you keep your production running smoothly.
Quick Ship Available
Most common W61/W62/W68 single-seat valve configurations ship from order date in 5 days or less.
W68 / W88 / W98 Series - Throttling/Regulating Single Seat Valves
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 adapter, 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" (25mm and 38mm) 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 3-A design
- Reverse (R) or standard plug design
- Pneumatic and electropneumatic positioners available
Key Applications
- Food Processing
- Beverage Processing
- Dairy Processing
- Personal Care Processing
- Chemical Processing
Our Quick Ship Program ensures rapid access to industry-leading pumps, valves, and mixer components—many shipping in as little as 5 to 10 working days.
Whether you’re responding to an urgent need or planning for maintenance, the Quick Ship Program helps keep your operations running efficiently—with reduced downtime and increased reliability. Explore product-specific details below to learn how quickly we can deliver the equipment you rely on.
W60 Single-Seat Valves (W61, W62, W68) Quick Ship Program
Lead Time: 5 working days or less*
- Sizes: 1” to 4”
- Body configurations: Shut-off, divert, and throttling
- Options for S-line and buttweld ports
- CU4 24VDC control options, Viton and EPDM elastomers
- No special tools required, easy to maintain, low cost of ownership
*Program limited to U.S. orders. Up to 10 units/day. Full order lead time applies when bundled with other items.
Sizes: 1" - 6" Tube O.D. (25 mm - 152 mm) Materials Product Wetted: ASTM 316L (UNS-S31603); (DIN-1.4404) Non-Product: ASTM 304 (UNS-S30400); (DIN-1.4301) Seat Material:
- Metal
- Tri-Ring
Elastomers:
- FKM (Standard)
- EPDM (Option)
Finish: < 32Ra (<0.8 µm) Other finishes available upon request
Model Types
- W68 Series – Throttling
- W88 Series – Aseptic Stem Flush Throttling
- W682 or W882 Series – Divert Throttling
- W685 or W885 Series – Non-Slamming Divert Throttling
Configurations 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