Ground Joint Fittings
Interlocking-Clamp Hose Fittings also referring to as ground joint fittings and boss couplings, these fittings are mainly perfect for high-pressure steam heating, humidification, and wash down applications.
RN brand Ground Joint fittings are an all purpose coupling that consists of a Male Stem, Wingnut (or Knurled Nut), and a Female Spud. They are widely useful for air, water, or steam specially with an interlocking clamp protection. Female Spuds / Male Spuds are for Hose-to-Rigid connections and Double Spuds are for Hose-to-Hose connections.
Boss Washer Seal features a leak proof seal forming by rotating the wingnut and hammering it tight. Recommending it for Steam Service up to 450° F. It is easy to seal, works with existing fittings, and is made of plated steel and/or iron.
Also to assemble insert the barbed end of the fitting into rubber hose. Then position the interlocking clamp over the hose and bolt into place with a torque wrench. The clamp firmly grips the hose as it locks into the ring of the barbed end, creating a leak tight seal. The interlocking clamps are not reusable. Fittings are strong and durable with fair corrosion resistance.
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Boss Interlocking Clamp
Boss Clamps (4 Bolt) are designed specifically for use with collared hose stems on air or steam hose. When properly installed, the gripping fingers on these clamps engage over the collar of the stem to prevent coupling blow-out.
Warnings: These clamps should be installed only by a fully trained assembler; failure to install these clamps correctly could result in serious harm or damage.