Model & Body Flange Rating
V150-FLFisher V150 ASME Class 150 Full-Flanged Body
V300-FLFisher V300 ASME Class 300 Full-Flanged Body
V200-WFFisher V200 Flangeless Wafer Style Body
Technical Specification
FISHER
Fisher Vee-Ball™ V150 / V300 Rotary Control Valve
The Fisher Vee-Ball™ Series (V150, V200, and V300) is a high-performance rotary control valve that combines the precise throttling characteristics of a globe valve with the high flow capacity and non-clogging capabilities of a ball valve. Engineered specifically for demanding process services involving fibrous slurries, pulp and paper stock, wastewater, lime mud, viscous chemicals, and severe steam throttling, the Vee-Ball features a precision-contoured V-notch segmented ball. As the ball rotates across the seal ring, it creates a powerful shearing action that slices cleanly through entrained solids, preventing dewatering, fiber buildup, and plugging. The V150 features an ASME Class 150 flanged body; the V300 provides ASME Class 300 flanged construction; and the V200 provides a compact flangeless wafer design. With a patented splined or taper-key shaft-to-ball connection that eliminates lost motion and hysteresis, Fisher Vee-Ball valves pair with Fisher 2052 or 1052 spring-and-diaphragm rotary actuators and FIELDVUE™ DVC6200 digital positioners for exceptionally smooth, responsive process modulation across rangeabilities exceeding 300:1.
Non-Clogging Shearing Action: Contoured V-notch ball shears through fibrous slurries, suspended solids, and viscous media against the seal ring
Exceptional Rangeability: Delivers smooth, repeatable throttling control with rangeabilities exceeding 300:1 across broad turndown regimes
High Flow Capacity: Unrestricted straight-through flow passage provides substantially higher capacity (Cv) than comparable-size globe valves
Zero Lost Motion: Taper-key or splined shaft connection completely eliminates rotational deadband and mechanical hysteresis
Ready for quotationShare your range, connection and case requirement.
Talk to ATHDesign StandardsASME B16.34, ISA 75.08.02, MSS-SP-68, NACE MR0175 / ISO 15156
Nominal Valve SizesNPS 1, 1-1/2, 2, 3, 4, 6, 8, 10, 12, 14, 16, and 20 (DN 25 through DN 500)
Pressure Class RatingsV150: ASME Class 150 | V300: ASME Class 300 | V200: Flangeless Wafer
Body StyleOne-piece flanged ball valve body with integral alignment guides
Flow CharacteristicModified Equal Percentage with outstanding low-flow sensitivity
Shutoff CapabilitiesClass IV (metal seal), Class V (high-temp metal), or Class VI (TCM / PTFE soft seal)
Body MaterialsCast Carbon Steel (WCB), CF8M (316 Stainless Steel), CG8M (317SS), Hastelloy C, Titanium
Ball / Trim Materials316 Stainless Steel with Chrome Plating, CoCr-A (Stellite 6), or Solid Ceramic
Shaft SealsENVIRO-SEAL™ Rotary live-loaded PTFE or Graphite packing (< 100 ppm)
Rotary ActuationFisher 2052 Spring-and-Diaphragm, Fisher 1061 Piston, or Bettis Scotch Yoke
Product Engineering
Fisher Vee-Ball V150 / V300 Selection Guide
Specify body style (flanged V150/V300), nominal size, seal type, and digital rotary instrumentation.
StyleSegmented V-Notch Rotary
Flange StandardASME Class 150 / 300
Turndown> 300:1 Rangeability
Drive ConnectionZero-Lost-Motion Splined Shaft
Nominal Valve Size
20NPS 2 (DN 50)
30NPS 3 (DN 80)
40NPS 4 (DN 100)
60NPS 6 (DN 150)
80NPS 8 (DN 200)
100NPS 10 (DN 250)
120NPS 12 (DN 300)
Seal Type & Shutoff Class
TCM-VITCM Fluoropolymer Soft Seal (Class VI Bubble-Tight)
MET-IVHeavy-Duty Metal Seal Ring (Class IV Slurry Duty)
HTM-VHigh-Temperature Stellite Metal Seal (Class V to 538°C)
Actuator & Positioner Package
2052-DVCFisher 2052 Spring-and-Diaphragm + FIELDVUE DVC6200
1061-DVCFisher 1061 High-Thrust Piston Actuator + FIELDVUE DVC6200
Model Code
FISHER-V150-40-WCB-TCM-2052-DVC6200
FISHERBrandEmerson Fisher
V150SeriesVee-Ball Class 150 Flanged
40SizeNPS 4 (DN 100)
WCBBodyCast Carbon Steel ASTM A216 WCB
TCMSealTCM Fluoropolymer Soft Seal (Class VI)
2052ActuatorFisher 2052 Rotary Diaphragm Actuator
DVC6200PositionerFIELDVUE DVC6200 Digital Valve Controller
Technical specifications
Ball ProfileContoured V-Notch 90° Segment
Stem PackingENVIRO-SEAL Rotary Live-Loaded
Flow DirectionForward (standard) or Reverse
DiagnosticsFull Stroke Travel & Friction Signature
Operational & Piping Notes
In slurry and fibrous media services, install the valve with shaft horizontal to prevent sediment accumulation in lower bearing housings.
Always confirm that the V-notch shearing orientation faces upstream for standard slurry cutting action.
Use certified Fisher mounting kits when pairing with 2052 actuators to maintain zero rotational backlash across the splined connection.
V-Notch Ball Shearing Action & High Capacity Flow
Standard globe valves often struggle when handling slurries, polymer emulsions, or pulp suspensions because suspended solids settle in the valve body cavity or wrap around guiding cages. The Fisher Vee-Ball™ eliminates this problem entirely through its rotating V-notch segmented ball geometry.
As the ball rotates into its closed position, the sharp, precision-ground V-edge contacts the seal ring with a continuous slicing action. Fibers, wood chips, paper pulp, and scale deposits are sheared cleanly without catching, ensuring reliable shutoff and preventing actuator stall. Furthermore, when fully opened, the unobstructed straight-through bore yields flow coefficients up to three times greater than globe valves of equal nominal diameter.
Modified equal percentage characteristic provides linear control response over the primary operating span while retaining extreme sensitivity near the seat
Ideal for paper machine stock blending, digester blowdown, lime slurry transfer, refinery crude desalter bottoms, and steam turbine bypass
Flanged body design (V150/V300) simplifies line bolting, grounding, and thermal insulation compared to wafer valves
Splined drive shaft mates directly with actuator lever arms, removing all linkage pins, cotters, and backlash
Interchangeable Seal Ring Systems
Fisher Vee-Ball valves offer three distinct seal constructions engineered for specific fluid conditions and process temperatures.
TCM Ultra Seal (PTFE)High-grade fluoropolymer seal ring delivering ANSI Class VI bubble-tight shutoff up to 204 °C (400 °F)
Heavy-Duty Metal SealHeat-treated stainless steel or Alloy 6 ring delivering Class IV shutoff for slurries and erosive media up to 427 °C
High-Temperature Flat MetalInconel or Stellite metal seal capable of high-temperature service up to 538 °C (1000 °F)
Cavitation-Control TrimOptional attenuator plates mounted on ball inlet to disperse energy in severe liquid letdown
Flow Capacity (Cv) Rating Comparison
NPS 2 (DN 50)Full Open Cv: 92 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 3 (DN 80)Full Open Cv: 206 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 4 (DN 100)Full Open Cv: 400 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 6 (DN 150)Full Open Cv: 840 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 8 (DN 200)Full Open Cv: 1,420 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 10 (DN 250)Full Open Cv: 2,300 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)
NPS 12 (DN 300)Full Open Cv: 3,450 | Max Working Pressure: 285 psi (V150) / 740 psi (V300)