Knife Gate Valves Browse All 
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Unidirectional
Bidirectional
Urethane Lined
O-Port
Push-Through, Slurry Valves
Guided Shear Gate
Zero Pocket
SG1 / SG3
Segmented Ball
Class 150 / 300
Control Valve
The SG1 / SG3 segmented ball control valve is designed for use in pulp & paper, mining, petrochemical, power generation, and general industrial processes where accuracy, and reliability are paramount. Soft-seat or metal seat variants ensure reliable throttling with tight shutoff, low torque, and excellent rangeability even in abrasive, high-temperature, and high-pressure services. Typical applications include slurries, steam, chemicals, pulp stock, and gas services.
Product Information
Sizes Available
- 1” to 12” (25mm to 300mm)
Pressure Rating
- ASME Class 150
- ASME Class 300
Standards & Approvals
- Shutoff: FCI 70-2 Class VI
- Sulphide Stress: NACE MR0175
- Flanges: ASME B16.5
- Face to Face: ISA 75.04
- Testing: API 598
- Mounting: ISO 5211
- Quality: ISO 9001:2015
- Registration: CRN
Temperature Rating
Viton GFLT (O-ring):
–40°F to 392°F (–40°C to 200°C)
–40°F to 392°F (–40°C to 200°C)
Design & Construction
- TFM4215 or Metal Seat
- LCC or CG8M body
- 17-4 PH or Duplex 2507 stem and shaft
- Viton GFLT O-rings
- Inconel X-750 spring
- Rack & pinion, spring return actuator
- Siemens PS2 positioner
TFM4215 Seat:
Metal Seat:
Features & Benefits
- Zero hysteresis coupler for precise throttling and control
Viton GFLT O-rings for extended temperature operating range
Metal Seat Version
- CrC ball segment and seat for improved wear resistance
- Wear ring functionality with hardened seat retainer and CrC overlay.
- Wave style spring design prevents material build-up
Options
- Alternate positioners
Resources
SG1Segmented Ball
Class 150
Control Valve
Product Brief25-0059
SG1Segmented Ball
Class 150
Control Valve
Technical Brochure25-0060
SG3Segmented Ball
Class 300
Control Valve
Product Brief25-0061