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Brand: Flowserve
Flowserve Valtek ShearStream HP Segmented Ball Valve
Description
ShearStream HP segmented ball control valve for harsh process streams
The Flowserve Valtek ShearStream HP is a segmented V-notch ball control valve designed for processes that carry particles, fibres or abrasive media. It is the robust, higher-pressure member of the ShearStream series, which also includes the ShearStream SB for general duty and moderate pressure ratings.
A straight-through port gives high flow capacity and large turndown, and the characterised ball sector gives smooth control. Seven Star LLC supplies the ShearStream HP in Oman and the GCC as an independent supplier in Muscat.
ShearStream HP technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / part number | Flowserve Valtek / ShearStream HP |
| Valve type | Segmented V-notch ball rotary control valve, one-piece body |
| Sizes | ANSI 1 to 16 in |
| Pressure classes | ANSI Class 150 to Class 600 |
| End connections | Flanged or wafer |
| Body materials | Carbon steel (WCB), stainless steel (CF8M), other alloys such as Monel, Hastelloy B/C, Alloy 20 and titanium |
| Seat options | Flexible metal seat; soft seat with PTFE or PEEK insert (optional metal back-up seal); heavy duty seat with UHMWPE soft insert option |
| Actuator | Valtek spring cylinder rotary actuator; Turnex scotch-yoke type for the SB version |
| Positioner options | XL, Logix 500si series, Logix 3000IQ series |
| Safety documentation | SIL safety manual available |
How the ShearStream HP controls flow
The ball is a segment of a sphere with a V-shaped notch. As the actuator rotates it, the notch opens progressively past the seat, giving a shearing action at the seat edge that helps cut through fibres and slurry instead of trapping them. The bore is unrestricted at full open, so pressure loss is low.
Flow is bi-directional because the flexible metal seat uses the pressure drop across it to improve sealing in both directions. This is useful where flow direction can reverse during upsets or transfers.
Seat choices for ShearStream HP
The flexible metal seat suits abrasive and hot service. The soft seat, with PTFE or PEEK inserts, improves shut-off where particles are not severe and can have a metal back-up seal for fire or temperature excursions. The heavy duty seat is for high pressure drops: a sealed wave spring keeps seating force constant, and its soft version uses an UHMWPE insert. Choose by considering the solids content, temperature and leakage class together.
ShearStream HP in the control loop
The valve is normally supplied with the Valtek spring cylinder rotary actuator, a compact, high-torque unit with good throttling stiffness, and a positioner from the Valtek XL, Logix 500si or Logix 3000IQ lines. The Logix 3000IQ gives HART or Foundation Fieldbus communication, the 500si is a compact intrinsically safe digital unit, and the XL is a dual-stage analogue positioner. The lighter ShearStream SB shares the concept but is limited to Class 150 and 300 and sizes to 20 in, so check class before choosing between them.
ShearStream HP selection checklist
- Fluid, solids content and particle size, and whether the stream is two-phase.
- Flow range, inlet pressure, pressure drop and operating temperature.
- Size and pressure class (150 to 600), flanged or wafer.
- Body and trim material for corrosion and erosion.
- Seat type: flexible metal, soft or heavy duty, and shut-off class.
- Actuator fail action and supply air pressure.
- Positioner type, communication protocol and hazardous area rating.
- Packing choice, including low-emission arrangements.
Installation and maintenance of ShearStream HP
Install with straight pipe around the valve where possible, and orient the shaft horizontally in slurry service so solids do not settle in the bearings. Flush the line before commissioning to remove weld debris, which damages seat faces. Stroke test the actuator and calibrate the positioner on site, and record the signature of a healthy valve. The one-piece body and removable seat make maintenance simple; keep a spare seat, packing set and ball sector for critical services.
Packing options in the ShearStream series include the SafeGuard packing set, a tested arrangement to ISO 15848-1 for low fugitive emissions. If your specification requires it, state the emission class in the enquiry so the correct packing is quoted.
Good turndown matters for valves in recycle and pH control loops. Give the minimum and maximum flow in the enquiry so that the ball sector, actuator torque and positioner are checked at both ends of the range, not only at the design point.
ShearStream HP applications in Oman and the GCC
Use cases include chemical and petrochemical streams with solids, power-plant ash sluice and slurry water, mineral and desalination brine with entrained particles, and pulp or fibrous process fluids. Where globe or butterfly valves are unsuitable because of plugging or erosion, a segmented ball is often the practical choice. Pair the valve with an actuator and positioner enclosure suited to hot, dusty outdoor conditions.
ShearStream series overview
| Model | Description |
|---|---|
| ShearStream SB | General service, ANSI 1 to 20 in, Class 150 to 300, WCB or CF8M, Turnex actuator |
| ShearStream HP | Heavy duty, ANSI 1 to 16 in, Class 150 to 600, alloy options, spring cylinder actuator |
Information to send with a ShearStream HP RFQ
- Valve size, class and end connection.
- Process data: flow, pressures, temperature and solids content.
- Materials, seat type and leakage class.
- Actuator, positioner and accessories required.
- Quantity and project documentation needs.
Documents and quotation
A manufacturer datasheet for the ShearStream HP is attached on this page for reference. Please send the duty data and the options you need, and we will prepare a quotation.
Seven Star LLC is an independent supplier in Muscat serving Oman and the GCC. Delivery time and availability are confirmed per enquiry.
Datasheets & Documents
- Datasheet Flowserve ShearStream HP Datasheet Download
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About brand
Flowserve is the American flow control company for pumps, valves, mechanical seals and valve automation, known through brands such as Durco, Worthington, Byron Jackson, Valtek, Limitorque, Worcester, Logix and Argus. It was formed on 22 July 1997 by the merger of equals of Durco International and BW/IP, whose heritage reaches back to Simpson & Thompson (1790) and Byron Jackson (1872). Flowserve Corporation is headquartered in Irving, Texas, and listed on the New York Stock Exchange.
Seven Star LLC sources and supplies Flowserve pumps, seals, control valves, ball valves, actuators and positioners for process plants in Oman, working from the nameplate data and the manufacturer's documentation.
Flowserve company profile
| Formed | 22 July 1997, merger of Durco International and BW/IP |
|---|---|
| Heritage companies | Simpson & Thompson, later Worthington Simpson (1790); Byron Jackson (1872); Duriron foundry, later Durco (1912) |
| Headquarters | Irving, Texas, USA |
| Ownership | Flowserve Corporation, public company (NYSE: FLS) |
| Product families | API and ANSI process pumps, Durco and Worcester ball and plug valves, Durco TX3 triple-offset and Valtek butterfly and globe control valves, Limitorque electric actuators, Logix positioners, mechanical seals |
Milestones
- 1790: Thomas Simpson founds Simpson & Thompson, a predecessor of Worthington Simpson pumps.
- 1872: Byron Jackson is founded, a root of BW/IP.
- 1912: The Duriron foundry, later Durco, is launched.
- 1997: Durco International and BW/IP merge on 22 July to form Flowserve, listed on the NYSE as FLS.
Flowserve product families listed here
Flowserve pumps on this page are the Durco Mark 3 ANSI process pump and the ECPJ vertical sump pump built to API 610 type VS4. Sealing products are the ISC2 cartridge mechanical seal to API 682 and DuraClear barrier fluid for dual seal systems. Flowserve valves include the Valtek Mark One globe control valve, Argus floating and trunnion-mounted ball valves (EK71, FK79, FK76M) and Durco Microfinish ball valves. Automation is covered by Limitorque MX and L120 multi-turn electric actuators, the Rotadisk RD and RDF pneumatic actuator and the Logix 3800 digital positioner.
Where Flowserve equipment is used
Mark 3 pumps handle acids, caustic, solvents and utilities in chemical and petrochemical units. VS4 sump pumps drain pits and collection tanks. Valtek control valves and Argus ball valves are found in refining, gas processing, power and desalination, and Limitorque actuators operate gate and globe valves on pipelines, tank farms and water networks across the GCC.
Flowserve products we list
Ordering Flowserve parts: what we need
The serial number on the nameplate is the key to Flowserve records for a pump, valve or actuator. Please add the following by product type:
- Pumps: size and model, impeller diameter, materials, seal arrangement, and the part name and item number from the sectional drawing
- Mechanical seals: seal type and size, drawing or part number, materials code, pumped fluid and flush plan
- Valves: size, pressure class, body and trim materials, end connections, and the actuator and positioner model
- Limitorque actuators: unit size, order and serial number, supply voltage, wiring diagram number
Facts checked against Flowserve's SEC filings and published company histories, October 2026.
Browse Flowserve products by category: Control Valves, Pumps, Valve Actuator, Valve Positioner.
FAQ
Questions about the Flowserve Valtek ShearStream HP Segmented Ball Valve
Answers from our engineering team on installation, compatibility and integration.
01What is the ShearStream HP?
It is a Valtek segmented V-notch ball control valve with a one-piece body, designed for particle-laden, fibrous and erosive process streams.
02What sizes and classes does ShearStream HP cover?
The sizes run from ANSI 1 to 16 in, in pressure classes 150 to 600, with flanged or wafer end connections.
03Which seats are available?
A flexible metal seat, a soft seat with PTFE or PEEK insert, and a heavy duty seat with a wave spring, optionally with an UHMWPE insert.
04What actuator is used?
The Valtek spring cylinder rotary actuator is recommended for the HP. It combines high torque with good throttling stiffness in a compact housing.
05Which positioners can be fitted?
Options include the Valtek XL, Logix 500si and Logix 3000IQ positioners, covering analogue, digital and HART or Foundation Fieldbus communication.
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