The Dresser Style 131 Dismantling Joint is a double-ended flanged adapter that allows for longitudinal adjustment in piping systems where flanged end pipe is the standard. A typical dismantling joint would be used anywhere that a flanged end piping accessory, such as a valve or pump, requires quick installation or removal.
Dresser offers the broadest line of Style 63 Expansion Joints including single-end (Type 1 and Type 3 shown below), and double-end (Type 2 & 4), limited-movement types, flanged, lock coupled, or weld ends. Aggressive wear and pipe wall failure caused by fatigue of the convoluted surfaces present in rubber accordion or metal bellows types is eliminated with Dresser expansion joints. There is no need for expensive pipe loop systems.
The Dresser style bolted coupling consists of one cylindrical middle ring, two follower rings, two resilient gaskets of special Dresser compound, and a set of steel trackhead bolts. The middle ring has a conical flare at each end to receive the wedge portion of the gaskets. The follower rings confine the outer ends of the gaskets. As the nuts are tightened, the bolts draw the follower rings toward each other, compressing the gaskets in the spaces formed by follower rings, middle ring flares and pipe surface thus producing a flexible, leak-proof seal on the pipe joint.Dresser Coupling Bolt Toque Guide
Dresser's Couplings work with a variety of size ranges and materials. Depending on the type of coupling, certain piping materials are needed to ensure a quality seal.
Steel Pipe - The standard forged piping components for ambient and high temperature. Steel pipe comes in many different styles and compositions for any condition.
Ductile Iron Pipe - Cast iron pipe was superseded by ductile iron pipe. Made of ductile cast iron, it is commonly used for potable water transmission and distribution.
Cast Iron Pipe - Cast iron pipe is a pipe which has had historic use as a pressure pipe for transmission of water, gas and sewage
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