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Jiffy Tite FAQs

Can Jiffy-Tite connectors be interchanged with Jiffy Matic connectors?

Yes. Jiffy-Tite connectors should not be interchanged with other brand connectors including other brands sold by DME.

What are the temperature limits and pressure limits for Jiffy-Tite Plugs?

Maximum pressure permitted is 200PSI. The thread sealant supplied with the fittings can withstand temperatures up to 400°F (204°C), however, if running water coolant in your mold, the water coolant temperature should not exceed the regional boiling point of water (typically 100°C or 212°F, but may be lower at higher elevation). If running oil coolant in your mold, it is not recommended to take Jiffy-Tite fittings to a temperature that exceeds 300°F (149°C).

What type of thread in the mold base plate is recommended to be used with the Jiffy-Tite connectors and plugs? How does this thread compare to DME Brass Pressure Plugs (inch type)?

The threads used on the Jiffy-Tite Plugs offered by DME are NPT (National Pipe Thread). The requirements for NPT are defined in ANSI B1.20.1

The threads used on the DME Brass Pressure Plugs (inch type) are NPTF (National Pipe Thread Fuel). The requirements for NPTF are defined in ANSI B1.20.3

It is important to differentiate between the two thread types because they are not the same. In layman terms, the NPTF spec is used with much tighter tolerances, so using an NPTF pressure plug with an NPT thread can reduce the amount of seal. Some customers make up for this using pipe tape and when using pipe tape for any application it is important to use pipe tape that is rated for the intended mold temperatures or environment. However, it is always recommended to use a female thread in the mold plate that is appropriately matched to the intended male thread. If you have further questions regarding the above ANSI specifications, we recommend that you purchase a copy of the specification at an authorized online distributor of ANSI standards. Please note that between the time of posting this information and you obtaining a licensed copy of the standard, the standard may be updated. DME makes no assurance that the standards listed above are current and it is recommended that you check with your authorized distributor of ANSI standards for the latest version of the standards listed above.

What type of thread is used on a Jiffy-Tite Extension Plug (JPB type)?

The threads are NPSM (Straight) threads, and are to be used with new or existing NPT tapered pipe-tapped hole in a mold or die. The straight thread on the extension plug allows for length adjustment.