Cover Accessories & Ports

HDPE-to-Stainless Transition Ports

Take an HDPE cover penetration to a threaded stainless connection.

Transition ports solve the problem of connecting threaded pipe, instrumentation, or hose to an HDPE cover. The lower body is HDPE, welded to a base plate that bonds to the cover, and the upper end transitions to a stainless steel male or female NPT fitting so you can thread standard hardware straight onto the cover penetration.

The stainless section is available in 304 or 316 for corrosive and biogas service, and the transition is fabricated to order in a range of NPT sizes. This is the clean way to bring a sensor, valve, hose barb, or piping run through a sealed cover without improvised adapters.

Configure & Request Quote

Build your part

NPT Size

Thread Type

Stainless Grade

Quantity

Made to order. No online payment. We reply with pricing and lead time.

Specifications

Build & materials

Lower body	HDPE, extrusion-welded to base plate
Transition	Stainless steel, 304 or 316
Connection	Male or female NPT
Sizing	Various NPT sizes, made to order

Where It's Used

Common applications

Threaded instrumentation and sensor connections
Hose or piping tie-ins to a cover penetration
Valve and fitting mounting points
Any HDPE-to-metal threaded transition on a cover

These parts mount on EFI floating covers and gas-tight digester covers, and are fabricated at the EFI shop in Gaston, SC.

FAQ

Questions about this part

Yes. The stainless transition can be finished as either a male or female NPT connection, in a range of sizes, so it matches whatever hardware you are threading onto it.

Both are available. 316 stainless is the usual choice for biogas, hydrogen sulfide, and other corrosive service because of its added corrosion resistance. 304 is a lower-cost option for milder duty. Choose on the quote form.

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