"BOSS" COUPLING SYSTEM

The Spud part of the coupling serves as one half of the connection and is ususally fixed permanently to the equipment.   The Stem and Nut attached (clamped) to the hose are the other half.  The two haves are connected or disconnected by rotating the Wing Nut on the Spud, to achieve a mechanical, as well as, a pressure seal. 

SERVICES: All-Purpose Hose Couplings, universally recommended for steam hose connections.  They are also widely used with equal efficiency for high or low pressure Air, Water, Liquid Petroleum Gas, Fluid Petroleum Products, Chemical, Potable Fluids and almost any other type of fluid or gas.  They can be applied to all types of rubber, synthetic, plastic, metallic (with special stems) or semi-metallic hose.   Consult Factory for specific media capabilities.

GROUND JOINT

Positive Metal-to-Polymer Seal

The leakproof seal in the "Boss" Coupling is affected in the Grround Joint Style by a soft-to-hard-polymer connetion when the rounded head of the stem is in firm contact with the beveled polymer insert in the Spud.  Job down time to replace lost or deteriorated washers is eliminated, and the sealing efficiency is not affected by dirt, grime or by normal wear through repeated use.

WASHER TYPE

In the washer type coupling, the seal is made by a Klinger nylon, Nitrile bonded, Keevlar reinforced washer between wide flat surfaces on the Stem and Spud.  A tight connection is made, without running the hose, by rotating the Wing Nut and hammering it tight.  The washer type is the original "Boss" coupling, superseded by the "GJ-Boss" coupling, providing a Ground Joint Seal in place of  washer type seal.

Worn-out hose couplings can be dangerous.   They should be checked regularly and replaced when necessary.  Each coupling user should review applicatons and add safety devices where indicated.