What is Metraflex?
The Metraflex Company has the products you need to protect your piping for high efficiency. Metraflex has been supplying piping specialty products to the commercial HVAC industry since 1958.
What is expansion loop?
Expansion loops provide sufficient flexibility to prevent thermal expansion and contraction from causing excessive stresses in the piping system. Expansion loops often are required in high-temperature gas well flow lines and gas and water injection lines.
What is pipe expansion joint?
A rubber pipe expansion joint is a flexible connector of two pipes. It provides stress relief in a piping system due to thermal and mechanical vibration or movements. This infographic helps illustrate the piping expansion joint construction.
What is an expansion compensator?
Expansion compensators are used to accommodate thermal pipe growth and other pipe movements in smaller diameter piping systems (up to 4 inch). These products work similarly to externally pressurized expansion joints in larger diameter piping.
Why are bridges built with expansion joints?
Bridges made of concrete are going to expand and contract slightly for a number of reasons, including temperature changes, shrinkage of the concrete, settlement, ice and even the weight of vehicles. Bridge expansion joints are what allow the concrete to naturally expand and contract without cracking.
How do you size an expansion loop?
GUIDELINES FOR LOOP SIZING The expansion loop, as a rule, should be located in the center of the distance between two anchors. 3. The height of the expansion loop is normally twice the width. The exception to this rule occurs when more than one line runs parallel in a common trench.
Why loop is used in pipeline?
Expansion loops are used in piping systems to help with thermal displacement and thermal movement. If thermal movement reaches a value that is higher than expected, expansion loops can keep thermal displacement to a minimum and deflect stress from the piping system.
What is a pipe compensator?
Pipeline compensator, also known as expansion joint or bellow expansion joint, is mainly used to compensate the thermal expansion and cold contraction of pipeline caused by temperature change.
Where are expansion loops positioned?
The expansion loop is usually located on the side of the hottest line. The expansion loop, as a rule, should be located in the center of the distance between two anchors. The height of the expansion loop is normally twice the width.
How do you calculate expansion of a pipe?
ΔL = aLo(T2-T1) (Equation 5) If the pipe is installed at an ambient temperature of 70 deg F, and the temperature of the pipe increases to 270 deg F, we can expect about 1.5 in of expansion in the 100 ft unanchored run.
Why are there bends in pipeline?
In industrial piping systems, bends are mainly used because of their flexibility, which allows for the accommodation of thermal expansions and the absorption of other externally-induced loads on the piping system.
What is pipe anchor?
A pipe anchor is a pipe support that’s designed to control movement and stop a pipe from shifting in three dimensions. Essentially, traditional pipe anchors are meant to fix pipes to a spot and stop pipes from moving.
How deep should expansion joints be?
Tips for placing concrete expansion joints Make sure joints are cut deep enough: they need to be at least a quarter of the thickness of the slab. For a 100mm slab, cut the joints at least 25mm deep. If you’re cutting joints after the concrete has been poured, don’t leave it too long.
How do you calculate expansion joint movement?
The maximum joint opening is equal to the minimum installation opening plus the movement due to temperature drop and shrinkage, therefore: 0.85W = 0.60W + (cos θ)(KMt + Ms), or W = 4(cos θ)(KMt + Ms) 2. The seal width to accommodate Mp: W = Mp ÷ 0.22 3.