API 602 Forged Steel

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Check valves are generally used to protect pumps or similar equipment, allowing the flow in only one direction and preventing flow reversal due to back pressure.

The swing type check valves are designed to produce a low pressure drop in the pipeline. This design provides a tight seal as well as a fast reaction to the closure.

Design Features
  • Valves in accordance with API-602.
  • Socket weld, threaded, combined.
  • Bolted or welded bonnets options.
  • Low fugitive emissions control.
  • Nace service either MR-0175 or MR-0103
  • Test in accordance with API-598.

Body to cover joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Disc to hanger allows the disc a controlled movement independent to the hanger to assure proper disc alignment with the seat at closure.

The connection is secured by a welded disc nut to prevent disassembly due to vibration and closure impact.

Stellite seat ring provides increased resistance to wear abrasion and erosion of the sealing surface.

"Y" Pattern Ball Check Valves are generally used to protect pumps or similar equipment, allowing the flow in only one direction and preventing flow reversal due to back pressure. Also is used when a laminar flow and increased CV is desired.

This design provides a tight seal as well as fast reaction to the closure impulse.

Metal seated check valves may not provide drop tight sealing when used in gas system or fluid system with low back flow pressure or fluids contaning particles.

  • Valves in accordance with API-602.
  • Socket Weld, Threaded, Combined or Flanged RF or RTJ Ends.
  • Bolted or Welded Bonnet Options.
  • Low fugitive emissions control.
  • Nace service either MR-0175 or MR-0103
  • Test in accordance with API-598.

Body to cover joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Spring to allow mounting in a vertical line.

Ball completely guided to assure a correct seal.

Stellite seat provides increased resistance to wear abrasion and erosion of the sealing surface.

Ball check valves are generally used to protect pumps or similar equipment, allowing the flow in only one direction and preventing flow reversal due to the back pressure.

The ball check valve can be used for a high viscosity fluid. The arrow stamped on the valves should match direction of the flow.

The sealing ability of check valves depends on the pressure of the back flow and the viscosity of the fluid.

Design Features
  • Valves in accordance with API-602.
  • Socket Weld, Threaded, Combined or Flanged RF or RTJ ends.
  • Bolted or Welded Bonnet options.
  • Low fugitive emissions control.
  • Nace service either MR-0175 or MR-0103
  • Test in accordance with API-598.

Body to cover joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Spring to allow mounting in a vertical line.

Ball completely guided to assure a correct seal.

Stellite seat provides increased resistance to wear abrasion and erosion of the sealing surface.

"Y" Pattern Piston Check Valves are generally used to protect pumps or similar equipment, allowing the flow in only one direction and preventing flow reversal due to back pressure. Also is used when a laminar flow and increased CV is desired.

This design provides a tight seal as well as a fast reaction to the closure impulse.

Metal seated check valves may not provide drop tight sealing when used in gas system or fluid system with low back flow pressure or fluids contaning particles.

Design Features
  • Valves in accordance with API-602.
  • Socket Weld, Threaded, Combined or Flanged RF or RTJ Ends.
  • Bolted or Welded Bonnets Options.
  • Low fugitive emissions control.
  • Nace service either MR-0175 or MR-0103
  • Test in accordance with API-598.
  • Horizontal Fluid Control
  • Vertical Fluid Control with Spring

Body to cover joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Guided piston to assure a correct seal.

Spring to allow a mounting in a vertical line available upon request.

Stellite seat provides increased resistance to wear abrasion and
erosion of sealing surface.

Piston Check valves are generally used to protect pumps or similar equipment, allowing the flow in only one direction and preventing flow reversal due to back pressure.

The piston check valves are designed with globe valve bodies, producing an increased drop pressure in the pipeline. This design provides a tight seal as well as a fast reaction to the closure impulse.

Metal seated check valves may not provide drop tight sealing when used in gas system or fluid system with low back flow pressure or fluids contaning particles.

Design Features
  • Valves in accordance with API-602.
  • Socket weld, threaded, combined or flanged RF or RTJ ends.
  • Bolted or Welded Bonnet options.
  • Low fugitive emissions control.
  • Nace service either MR-0175 or MR-0103
  • Test in accordance with API-598.
  • Horizontal Fluid Control
  • Vertical Fluid Control with Spring

Body to cover joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Guided piston to assure a correct seal.

Spring to allow a mounting in a vertical line available upon request.

Stellite seat provides increased resistance to wear abrasion and erosion of sealing surface.

The Gate Valve is used when the need exists for a device that allows an interruption or cut off in the flow of fluid. Gate Valves are not to be used for flow modulation as the high velocity through a partially open valve may result in erosive damage to the wedge and seats. Under normal operating conditions, the valve should remain either fully open or fully closed. Installation of a Gate Valve is independent of the flow direction.

 Design Features
  • Valves in accordance with API-602..
  • Socket Weld, Threaded, Combined or Flanged RF or RTJ ends.
  • Bolted Bonnet or Welded Bonnet options.
  • Expanded Seat Rings.
  • Low fugitive emissions control.
  • NACE Service either MR-0175 or MR-0103.
  • Test in accordance with API-598.

Rising stem with precision acme double thread for quick operation.

Stem-gate connection designed so that under severe applied loads (stuck gate), the stem will fail outside of the stuffing box pressure boundary.

Stem packing is designed for optimum control of fugitive emissions leakage to the atmoshphere. The ultra-low emission leakage rate is assured by the fine finish on the stem sealing area, the reduced diametrical clearences and the stem straightness control.

Backseat designed to relieve back pressure on the stem packing when fully seated. Replacing stem packing under pressure is not recommended.

Body to bonnet joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Stellite seat rings provide increased resistance to wear, abrasionand erosion of the sealing surfaces.

The "Y" Pattern Globe Valves are primarly used to modulate or regulate the volume of the flow when a minor flow is required.

A "Y" Pattern Globe Valve is recommended when a continuous full flow of fluid is required due to the highest CV against a "T" Pattern Globe Valve.

Also suitable for solving some troubles in the field when space limits the usage of a standard "T" Pattern Globe Valve.

This type of valve should always be installed so the flow intake enters through the base of the valve seat. The valve has an arrow stamped on the body to indicate the preferred direction of the flow.

Globe Valves may be used with fluids containing particles in suspension.

Design Features
  • Valves in accordance with API-602..
  • Socket Weld, Threaded, Combined Threaded x Socket Weld
  • Bolted Bonnet or Weld ed Bonnet options.
  • Standard or Full Port.
  • Low fugitive emissions control.
  • NACE Service either MR-0175 or MR-0103.
  • Test in accordance with API-598.

Rising stem with precision acme thread.

Stem packing is designed for optimum control of fugitive emissions leakage to the atmosphere. The ultra-low emission leakage rate is assured by the fine finish on the stem, the reduced diametrical
clearances and the stem straightness control.

Backseat designed to reliev e back pressure on the stem packing when fully seated. Replacing stem packing under pressure is not recommended.

Body to bonnet joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Stellited seat ring, providing increased resistance to wear, abrasion and erosion of the sealing surface.

Integral welded seat or threaded seat.

The Globe Valves are primarily used to modulate or regulate the volume of the flow.

A Globe Valve is not recommended when a continuous full flow of fluid is required due to the high pressure drop inherent to the design of a Globe Valve.

This type of valve should always be installed so the flow intake enters through the base of the valve seat. The valve has an arrow
stamped on the body to indicate the preferred direction on flow.

Globe Valves may be used with fluids containing particles in suspension.

Design Features
  • Valves in accordance with API-602.
  • Socket Weld, Threaded, Combined or Flanged RF or RTJ ends.
  • Bolted Bonnet or Wel ded Bonnet options.
  • Standard or Full Port.
  • Low fugitive emissions control.
  • NACE Service either MR-0175 or MR-0103.
  • Test in accordance with API-598.

Rising stem with precision acme thread.

Stem packing is designed for optimum control of fugitive emissions leakage to the atmosphere. The ultra-low emission leakage rate is assured by the fine finish on the stem, the reduced diametrical
clearances and the stem straightness control.

Backseat designed to relieve back pressure on the stem packing when fully seated. Replacing stem packing under pressure is not recommended.

Body to bonnet joint designed to apply a uniform load to the gasket to assure a leak proof seal.

Stellited seat ring, providing increased resistance to wear, abrasion and erosion of the sealing surface.

Integral welded seat or threaded seat.