Double Orifice Design: Large orifice (for pipeline filling) + small orifice (for pressurized release).
Automatic Operation: Float-controlled mechanism — no manual intervention needed.
Prevents Pipeline Collapse: Releases accumulated air pockets that cause bursts or flow reduction.
Vacuum Breaking: Admits air when pipeline drains to prevent negative pressure collapse.
Ductile Iron Body: Corrosion resistant with epoxy coating.
Flanged or Threaded Connection: Available in both styles.

Flanged Connection: Direct bolt-up to pipeline flanges (PN10/16 or Class 150).
High Accuracy: ±2% accuracy over wide flow range.
Turbine or Woltmann Type: For high flow rate bulk water measurement.
Mechanical or Digital Register: Pulse output available for remote reading.
Low Pressure Drop: Streamlined measuring chamber.
Ductile Iron Body: Corrosion resistant with epoxy coating (WRAS/NSF optional).

Threaded Connection: BSP or NPT threads for easy installation on small pipes (DN15-DN50).
Multi-Jet or Volumetric Type: Reliable accuracy at low flow rates.
Dry Dial Register: Magnetic drive prevents water from fogging the display.
Compact & Lightweight: Easy to install in meter boxes or tight spaces.
Horizontal or Vertical Installation: Available with universal body.
NSF / WRAS Certified Options: For drinking water applications.

OS&Y (Outside Screw & Yoke) Design: Stem threads are outside the pipeline — protected from corrosive media.
Rising Stem: Visual indication of valve position (open when stem is extended).
Solid Wedge or Flexible Wedge: Solid for general service; flexible for thermal cycling.
Bolted Bonnet: Easy maintenance without special tools.
Renewable Seat Rings: Seat rings can be replaced in the field.
Class 150 to Class 1500: Available for high pressure applications.

Globe Pattern Body: Excellent throttling characteristics — better than gate valves.
Low Seat Leakage: Disc makes positive contact with seat — ideal for frequent operation.
Bolted Bonnet: Easy access for disc and seat maintenance.
Renewable Seat & Disc: Both can be replaced without replacing the valve.
WCB / WC6 / WC9: Select carbon steel grade based on temperature.
Class 150 to 2500: Available for the highest pressure systems.

Floating Ball Design: Ball seals against upstream seat for bubble-tight shut-off.
Full Port or Reduced Port: Full port for minimal pressure drop; reduced for lower cost.
Fire Safe Design (Optional): Secondary metal seat meets API 607.
Anti-Static Device: Prevents static charge buildup in explosive environments.
Blow-Out Proof Stem: Stem cannot be ejected under pressure.
ISO 5211 Mounting Pad: Ready for electric or pneumatic actuators.

Swing Disc Design: Disc swings fully open — minimal flow resistance.
Renewable Seat Ring: Bolt-in seat can be replaced without replacing valve body.
Class 150 to 1500: Available for high pressure and high temperature.
Lever & Weight Option: Adjustable closing speed to reduce water hammer.
Horizontal or Vertical (Upward Flow): Flexible installation orientation.
Long Hinge Life: Stainless steel hinge pin with bronze bushings.

Threaded Ends: NPT or BSP threads for quick installation on small bore pipes.
Forged A105 Body: High strength for Class 800 service.
Compact Size: No flanges — ideal for tight spaces and instrument tap connections.
Solid Wedge: Stellite faced for steam and high temperature.
Threaded Bonnet or Welded Bonnet: Low cost or leak-proof option.
Rising Stem (OS&Y): Visual position indicator.

Threaded Ends: NPT or BSP — quick, low cost installation on small pipes.
Forged A105 Body: Strong and reliable for Class 800 service.
Excellent Throttling: Globe pattern provides precise flow control.
Stellite Faced Disc: Resists erosion in steam and high temperature service.
Backseating: Allows stem packing replacement under full pressure.
Compact & Lightweight: No flanges — ideal for tight instrument panels.