Wellhead Grease Fittings, Internal Check Series

Brand: PGI International
Parker PGI's Internal Check Wellhead Grease Fittings are installed below lubrication fittings to provide added back flow protection.

They are offered in 1/4" to 1/2" NPT tapered threads with a spring biased single ball check. This style of Internal Check Wellhead Grease Fittings features a heavy-duty radial rivet crimp that provides the best "blow-out" protection of any available crimped style fitting. The radial rivet crimp process conforms to the latest revision of NACE when manufactured with 316 SS or 4140 body material.

Single floating ball check and double floating double ball check straight design styles of Internal Check Wellhead Grease Fittings are also available.
Features
  • Accepts button head grease fitting coupler
  • Heavy Duty Radial Rivet Crimp
  • 1/4" - 1/2" NPT sizes
  • 316 SS or 4140 body materials meet latest revision of NACE - no cold working of materials
  • Service up to 10000 PSI
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Images are representations only.
Parker PGI's Internal Check Wellhead Grease Fittings are installed below lubrication fittings to provide added back flow protection.

They are offered in 1/4" to 1/2" NPT tapered threads with a spring biased single ball check. This style of Internal Check Wellhead Grease Fittings features a heavy-duty radial rivet crimp that provides the best "blow-out" protection of any available crimped style fitting. The radial rivet crimp process conforms to the latest revision of NACE when manufactured with 316 SS or 4140 body material.

Single floating ball check and double floating double ball check straight design styles of Internal Check Wellhead Grease Fittings are also available.
Features
  • Accepts button head grease fitting coupler
  • Heavy Duty Radial Rivet Crimp
  • 1/4" - 1/2" NPT sizes
  • 316 SS or 4140 body materials meet latest revision of NACE - no cold working of materials
  • Service up to 10000 PSI

Internal Check Series

Seat Style

Thread Type

Process Connection

Materials

Specifications

Product Style

  • Single Ball Check - Spring Biased
  • Double Ball Check - Floating
  • Single Ball Check - Floating

Connection Thread Size

  • 3/4" (10 UNC) - 1" (8 UNC)
  • 1/4" - 1/2" (NPSM)
  • 1/4" - 1/2" (NPT)

Body Material

  • Consult Factory for Additional Materials
  • 1215
  • 4140
  • 316 Stainless Steel

Plating Type

  • N/A
  • Zinc

Heat Treatment

  • N/A
  • Rc 22 Max (NACE)
  • Annealed (NACE)

Ball Material

  • Consult Factory for Additional Materials
  • AISI 52100 Chrome Alloy
  • K-MonelĀ®

Spring Material

  • Consult Factory for Additional Materials
  • N/A
  • InconelĀ® X-750

Length

  • 1-1/4"
  • 1-7/16"
  • 1-9/16"
  • 1"
  • 1-9/32"
  • 1-5/8"
  • 3/4"
  • 7/8"
  • 15/16"

Maximum Operating Pressure

  • 10000 PSI
  • 689 Bar

Typical Applications

  • Installed below Injection Fittings
  • Wellhead Equipment Lube Systems

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