OSTech has focused on esteemed manufacturer and sales of automated and manually operated quarter turn valves.

Over the years OSTech has acquired several sales to major Oil and Engineering companies, becoming one of the leaders in the Valve industry.

OSTech is not only known for manually operated valves but also offers Control valves , Ball Valves, safety valves, globe valves, eccentric plug valves ,shut off valves and high performance butterfly control valve, high integrity pressure protection system (HIPPS ) from the largest manufactures .

Type:

Ball Valves ( size : ½” – 60 “ , pressure rating 150# – 2500# )

  • Top entry Ball Valve
  • Floating Ball Valve
  • Side entry Ball Valve
  • Rising stem
  • Three way
  • Fully welded , split body
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Gate Valve ( size: 2” – 80” , pressure rating 150# – 2500 # )

  • Wedge type,
  • through conduit
  • Rising stem gate valve
  • Knife gate valve (wafer , pneumatic , bevel gear , slurry , bonneted )
  • Bellows gate valve
  • Cast steel gate valve
Pressure rating ANSI 150 to 4500, API 2,000 to 20,000 psi
Temperatures -100°C to + 190°C
Water depths To 3000m
Bore Sizes 1/2 to 42″
Material options Carbon and low alloy steels, stainless steels, low temperature, carbon steel, duplex, super duplex, Inconel
Actuation Hydraulic, pneumatic (double acting and spring return), Electric, Manual and ROV
Standards API 6A, API 6D, API 17D, API 6AV1, ISO 10423, ISO 13628, ISO 14313, ISO 14723
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Check Valve

  • Swing Y type piston , Dual Plate , Wafer Lift ,Axial
  • Diaphragm check valve
  • Swing check valve or tilting check valve
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Butterfly Valve : ( size : 3” – 140 “ , pressure rating 150# – 2500# )

  • Center line type , Eccenteric structure
  • Pressure sealed
  • Hot –Air adjustable
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Globe Valve : ( size : 2” – 60 “ , pressure rating 150# – 2500# )

  • Angle type bellows seal
  • Forged steel
  • Y-Type
  • Jacketed
  • Rising stem
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Control Valves : On Off Valves , ESD valves ( size : ½” – 60 “ , pressure rating 150# – 2500# )

  • Pneumatic control valve
  • Eelectric control valve
  • Hydraulic control valves
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Special Valves

  • Needle Valves : 1/8” to 1-1/2” Rating 6000 Psi to 12000 Psi
  • Mono Flange Valve : ½” to 3” Rating : ANSI 150# to 2500#
  • Double Block & Bleed Valve : ½” to 36” Rating ANSI 150# to 2500#
  • HIPPS Valves(High Integrity Pressure Protection System )
    1. Sizes: 2″ – 60″
    2. Ratings: ASME 150 – 2500 or API 3000 – 10 000
    3. Higher pressure ratings upon request
    4. All: DIN3381 / EN14382 certified
    5. Full closure in 2 seconds

HIPPS is applied to prevent over-pressurization of a plant or pipeline by shutting off the source of the high pressure.

HIPPS provides a solution to protect equipment in cases where:

  • high-pressures and / or flow rates are processed
  • the environment is to be protected
  • the economic viability of a development needs improvement

 

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diagram