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Black polypropylene bolted bulkhead tank flange with four bolt holes and female NPT threads

Banjo

Banjo BF100 1" FNPT Bolted Bulkhead Tank Flange Trap

SKU CH-SMFD-MH3BX MPN BF100

Bolted bulkhead tank flange with 1" FNPT connections, glass-reinforced polypropylene body, EPDM gasket, rated to 150 psi and 150°F

  • TypeDrain Components
  • Bolted bulkhead design secures tank connections
  • 1-inch FNPT female threads fit standard piping
  • Polypropylene body with glass reinforcement resists corrosion
  • EPDM gasket seals reliably from -20 to 150 degrees F
  • Rated for 150 psi maximum operating pressure

Bolted Bulkhead Tank Flange

The Banjo BF100 is a bolted bulkhead tank flange designed for plumbing systems that require a secure pass-through connection. It fits both curved and flat tank surfaces using a four-bolt pattern and an EPDM gasket to seal the joint. This component suits installers who need a durable, chemically resistant bulkhead fitting for liquid storage or transfer tanks. It is not for buyers who need a threaded plug or a non-bolted fitting style.

Polypropylene Glass-Reinforced Body

The fitting is moulded from glass-reinforced polypropylene, giving it a broad temperature range from -20 °F to 150 °F and a maximum operating pressure of 150 psi. The material resists corrosion and many common chemicals without adding weight or requiring metal hardware in the fluid path. Normal service stays within these limits without special cooling or pressure-relief measures. It is not for systems that exceed the stated pressure or temperature boundaries.

1-Inch FNPT Connections

Both the inside and outside ports are female NPT threaded at 1 inch, so the flange accepts standard NPT pipe nipples or adapters on either side of the tank wall. The four-bolt mounting pattern aligns with common tank cut-outs for straightforward installation. Verify that your piping uses 1-inch NPT threads before ordering. It is not for installations that require a different thread size, type, or gender.

Highlights

  • Bolted bulkhead design secures tank connections
  • 1-inch FNPT female threads fit standard piping
  • Polypropylene body with glass reinforcement resists corrosion
  • EPDM gasket seals reliably from -20 to 150 degrees F
  • Rated for 150 psi maximum operating pressure

Specifications

TypeDrain Components
BrandBanjo
ModelBF100

Questions about this item

How do I install the 1" FNPT bolted bulkhead flange on a curved or flat tank, and what step is often missed?

Place the EPDM gasket between the flange and tank wall, insert the four bolts through the bolt holes, and tighten evenly to 150 psi seal pressure; the step most often missed is torquing the bolts in a cross pattern to prevent uneven compression.

What maintenance will the EPDM gasket and polypropylene body need over time?

Inspect the EPDM gasket annually for cracking or hardening from temperature cycles between -20 and 150 °F; replace the gasket if leaks appear, while the glass-reinforced polypropylene body typically requires no replacement unless physically damaged.

What is the first limit reached under sustained pressure and temperature?

The 150 psi maximum operating pressure at 150 °F is the primary limit; exceeding either the pressure or temperature rating will cause the gasket to degrade first, leading to leaks before the polypropylene flange itself fails.

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