Control Ball Valve S19 Flow-tek Bray International

Segmented Ball Valve

Series 19/19L

Size Range
NPS 1 to 16 / DN 25 to 400
Temperature Range
-50°F to +500°F (-46°C to +260°C)
Maximum Allowable Operating Pressure
ASME Class 150, 300, 600
EN 1092 PN 10, 16, 25, 40


Segmented Ball Valve - Series 19/19L

Size Range
NPS 1 to 16 / DN 25 to 400
Body Materials
Stainless Steel (CF8M), Carbon Steel (WCB), 316L
Others available upon request
Temperature Range
-50°F to +500°F (-46°C to +260°C)
Stem Materials
17-4PH, Nitronic 50 (XM-19), Super Duplex, SMO 254 Stainless Steel
Maximum Allowable Operating Pressure
ASME Class 150, 300, 600
EN 1092 PN 10, 16, 25, 40
Seat Materials
Resilient Seat: (316) Stainless Steel w/ Tek-Fil® Insert (S19)
Metal Seat: (316) Stainless Steel with Stellite Hard Facing (S19 & S19L)
Solid Tungsten Carbide (S19L)
Shutoff Rating
Metal Seat: Class IV per IEC 60534-4 /ANSI/ FCI 70-2,
Soft Seat: Class VI per IEC 60534-4 / ANSI / FCI 70-2
Ball Materials
S19: Stainless Steel (CF8M), CF8M Hard Chrome Plated
S19L: CF8M with proprietary hard face coating.
Body Style
One Piece
Design Standard
ASME B16.34
Testing Standard
Shell test – API 598
Seat leak – ANSI FCI 70-2
Reduced Port: 90° (Standard), 60°, 30°, and customized segment characterization profiles available
CRN, ISO 15848, PED, PED(S)R, TR CU, TSG, UA.TR.089
End Connections
Flanged, Flangeless (Wafer)
Face to Face
Flanged: ANSI/ISA 75.08.02 / ASME B16.10
Flangeless: Bray Internal Standard
On/Off and Control Applications in: Pulp and Paper, Sugar and Ethanol Production, Mining, Oil and Gas, Power, Refining, Chemical, Food and Beverage, HVAC, and other highly abrasive slurry applications.

Features & Benefits

Bray's Series 19 combines the shearing action of a knife gate valve, control characteristics of a globe valve, and sealing performance of a ball valve in a versatile high-performance rotary control valve designed for throttling and on-off applications. The Series 19 segmented valve features a characterized segment for high rangeability and high flow capacity in an economical product that delivers exceptional control valve performance. Series 19 segmented ball valves also deliver excellent sealing performance for on-off applications, achieving Class VI in resilient and Class IV sealing performance in metal seated trims.

Bray's Series 19L segmented Control Ball Valve combines the versatile design of the standard Series 19 with advanced trims for highly abrasive slurry and severe service applications that often lead to erosion in traditional valves. Bray's proprietary advanced coating technology is applied to the internal components of the valve to provide increased hardness and bond strength over other commonly used coating technologies throughout the industry. Series 19 & 19L segmented valves are available in a variety of trim configurations for use in a wide variety of industries including:
  • Pulp & Paper

  • Sugar & Ethanol

  • Refining Process Control

  • Power Plants

  • Hydromet Pump Isolation

  • Process Control

  • Food & Beverage

  • HVAC

  • Solvent Extraction

  • Mining

  • Water & Wastewater

  • Oil & Gas

  • Chemical

  • Gas Collection Fields


Series 19

The perfect control ball valve solution for slurries containing suspended solids or fibers. viscous fluids, pulp, paper, chemical, wastewater sludge, and other challenging service conditions.

  • A. One-Piece Body

    Provides a rigid, robust shell capable of withstanding pipe loading, and eliminates potential leak paths.

  • B. Splined Stem to Segment Connection

    Provides efficient torque transmission and precise control, with low hysteresis and reduced deadband.

  • C. Self-Centering Ball Segment

    Perfectly oriented, specially designed shaft pin facilitates self-alignment of the ball segment, while simplifying assembly and disassembly during routine maintenance.

  • D. Coatings

    High-performance coatings on internal components ensure long life and corrosion resistance.

  • E. Energized Seat

    Seat spring provides constant force on the seat to seal against the segment at low differential pressures. At higher differential pressures, optimized sealing diameters ensure lower seat torques.

  • F. Protected Sealing Area

    Seats are designed to direct media flow away from the sealing area.

  • G. Blowout Proof Stem

    Retaining ring fits between machined stem groove and gland retainer step.

  • H. Easy Maintenance

    The seat is replaceable without removing the segment and shaft.


Series 19L

Severe erosion demands more from your flow control valve. In addition to the benefits of the standard service valve, the S19L offers advanced material selections and multiple trim options to provide an application-specific solution for your unique needs.
  • A. Erosion Resistant Downstream Liners/Seats

    Reverse flow direction prevents body wall erosion due to high velocities at low openings.

  • B. Severe Service Coatings

    Customized ultra-hard coatings provide application-specific corrosion and erosion resistance for valve internals.

  • C. Bearing Seals

    Protects metal bearings from ingress of media.

  • D. Pressure Balanced Seat Design

    Seats capable of sealing under full differential pressures with low torques and smooth operation.

  • E. Easy Maintenance

    Flanged retainer with uninterrupted gasket surface provides easy access for seat and liner replacement.

  • F. Trim Options

    Multiple options available for optimized performance in various levels of erosive services.

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