Wellhead Grease Fittings, Internal Check Series | Parker NA

Wellhead Grease Fittings, Internal Check Series

Parker PGI’s Internal Check Wellhead Grease Fittings are available in single and double ball designs with tapered or straight threads for service to 10,000 psi.

Parker PGI’s Internal Check Wellhead Grease Fittings are available in single and double ball designs with tapered or straight threads for service to 10,000 psi.

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Description
    Parker PGI’s Internal Check Wellhead Grease Fittings are installed below lubrication fittings to provide added back flow protection.   

    They are offered in ¼” to ½” 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.

    Markets:
    • Chemical
    • Petrochemical
    • Oil and Gas

    Features/Benefits:
    • Accepts button head grease fitting coupler
    • Heavy Duty Radial Rivet Crimp
    • ¼” to ½” NPT sizes
    • 316 SS or 4140 body materials meet latest revision of NACE- no cold working of materials.
    • Service up to 10,000 PSI

    Applications:
    • Installed below Injection Fittings
    • Wellhead Equipment Lube Systems
Description

Performance Characteristics

Style

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

Connection Thread Size (inch)

1/4" to 1/2" NPT | 1/4" NPSM to 1/2" NPSM | 3/4" - 10 UNC to 1" - 8 UNC

Body Material

316 SS | 4140 | 1215 | Consult factory for additional materials

Plating

Zinc | N/A

Heat Treatment

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

Ball Material

K-Monel® | AISI 52100 Chrome Alloy | Consult factory for additional materials

Spring Material

Inconel X-750 | N/A | Consult factory for additional materials

Overall Length

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

Maximum Operating Pressure (psi)

10,000

Maximum Operating Pressure (bar)

689

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  • Literature and Reference Materials

  • Wellhead Fittings & Valve Components | PGI-WF
  • Contact Us

    Parker Hannifin Corporation
    Instrumentation Products Division
    1005 A Cleaner Way
    Huntsville, AL 35805 USA
    Phone +1 (256) 881-2040
    Fax  +1 (256) 881-5072