Push-to-Connect Brass Fittings for Plastic Tubing | Parker Prestolok PLP/PLN
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Parker's Prestolok PLP and PLN* is a one piece push-to-connect brass fitting for low pressure pneumatic circuits, where assembly or disassembly and reassembly is important. PLP designates nickel plated brass body, PLN designates brass body without nickel plating. A stainless steel grab ring grips the tubing to provide retention. Swivels are featured on all male pipe threaded shapes for installation in tight places and for precise positioning. The fittings are corrosion resistant, with a pre-applied thread sealant and nitrile D-seal.
To order brass body without nickel plating, replace "PLP" in the part number with "PLN".
Do not use for live swivel applications. For swivel applications, use oscillating elbows.
Nomenclature Example:
| W68PLP-4-2 | W68PLN-4-2 |
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Specifications
Materials
- Body: Nickel plated brass (PLP) or brass (PLN)
- O-Ring: Nitrile is standard; other materials available on request
- Release Button: Polyacetal
- Grab Ring: Stainless steel
Performance
- Working Pressure: Up to 300 PSI, depending on pressure rating of tubing used
- Temperature Range: 0°F to 200°F
- Vacuum Applications: Depend on tubing used and temperature
Sizes
- Tube OD (in): 1/8, 3/16, 5/32, 1/4, 5/16, 3/8, 1/2
- Tube OD (mm): 4, 6, 8, 10, 12, 14
Recommended Tubing
Parker Prestolok metal fittings are designed to work with the following Parker tubing:
- Series E (inch sizes) - Linear low density polyethylene
- Series E (metric sizes) - Linear low density polyethylene
- Series PP - Polypropylene
- Seires N (inch sizes) - Plasticized Polyamide (Nylon) (inch sizes)
- Seires N (metric sizes) - Plasticized Polyamide (Nylon) (metric sizes)
- Series NR - Unplasticized Polyamide (Rigid Nylon)
- Series U - Polyurethane 90 durometer shore A
- Series HU - Polyurethane 95 durometer shore A
Inch sized Parker Prestolok nickel plated fittings can also be used with Polyurethane 85 durometer shore A. However, not all manufacturers of 85A PU tubing approve the use of their tubing with push-to-connect fittings.
Testing has shown that certain OD-ID combinations can be used but applications and service conditions vary. Therefore, the use of a tube support may be required for any 85A PU tubing.
The following OD-ID size combinations require the use of a tube support regardless of application:
(all sizes in inches)
- 5/32 - 3/32
- 3/16 - 1/8
- 1/4 - .170
- 1/4 - 3/16
- 5/16 - 1/4
- 3/8 - 5/16
- 1/2 - 3/8
Available Configurations
Tube to Male NPTF
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Male Connector - Round Body |
Male Elbow - Swivel |
Male Elbow
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 Male Run Tee Swivel |
Male Branch Tee Swivel
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Male Connector
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Male Connector
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Tube to Female NPTF
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Female Connector
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Tube to Tube
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Union Tee
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Union Elbow |
Union |
Bulkhead Union
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Bulkhead Union
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Female Bulkhead Union |
Tube to Straight Thread
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Male Connector
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Male Connector |
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Tube to Male BSPT
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Male Connector - Tube to Male BSPT
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Tube to Male BSPP
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Male Connector - Tube to Male BSPP
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Metric Tube
For information on sizes and pricing, please call us at 888.715.4673, email us at hfe@hfeweb.com or fill out a contact form on this page to get answers to your questions.