EVR Expansion Joints

CJ-31 Expansion Joint.

For situations where piping diameters of different sizes must be connected, EVR's CJ-31 tapered connector is the answer. Manufactured to the stringent standards adhered to for all of EVR's product lines, these units can be engineered for specific material situations and offer all of the advantages of EVR's other expansion joints.

In systems with load stresses, settling and equipment wear, misalignment frequently results. EVR's CJ-31 provides superb insulation from the vibrations of equipment, thus reducing the surrounding noise levels and protecting adjacent equipment from unnecessary wear and tear.

With full face flanges, Series CJ-31's retaining rings transmit the force from the torqued flange bolts to the mating flange, thus providing a perfect seal.

EJ-41 Expansion Joint

For situations where piping diameters of different sizes must be connected, EVR's EJ-41 tapered connector is the answer. Manufactured to the stringent standards adhered to for all of EVR's product lines, these units can be engineered for specific material situations and offer all of the advantages of EVR's other expansion joints.

In systems with load stresses, settling and equipment wear, misalignment frequently results. EVR's EJ-41 provides superb insulation from the vibrations of equipment, thus reducing the surrounding noise levels and protecting adjacent equipment from unnecessary wear and tear.

With full face flanges, Series EJ-41's retaining rings transmit the force from the torqued flange bolts to the mating flange, thus providing a perfect seal.

MJ-60 Expansion Joint

The MJ-60 is a low cost, double-width arch, externally reinforced, moulded butyl expansion joint with twice the movement capability of standard expansion joints.

This expansion joint is commonly used in pulp and paper applications, as well as water and waste treatment. Special, hand-made versions of this joint are available in different elastomers and multiple arch types for other applications.

MJ-70 Expansion Joint

The MJ-70 double-arch expansion joint features a precision moulded neoprene compound reinforced with multiple plies of nylon. The shape of the arches provide a smooth, low turbulence flow which will handle process fluids with suspended solids.

Installation is easy due to the threaded Vanstone-style rings, making them easy to align. Control units are also available.

MJ-80 Expansion Joint

The MJ-80 single-arch expansion joint features a precision moulded neoprene compound reinforced with multiple plies of nylon. The spherical shape of the arch provides a smooth, low turbulence flow which will handle process fluids with suspended solids.

Installation is easy due to the threaded Vanstone-style rings, making them easy to align. Control units are also available.

MJ-90 Expansion Joint

MJ-90 moulded neoprene expansion joints are designed to handle vibration, misalignment and movement in smaller diameter piping systems. The union ends provide a simple means of disconnecting the piping to service equipment such as pumps. The maximum angular movement of this joint is 45°.

OJ-61 Expansion Joint

EVR's OJ-61 Slip-On expansion joint offers the perfect solution for new and existing installations. Its high degree of flexibility insulates and protects equipment from the damages of vibration and can easily accommodate normal misalignments.

The OJ-61's slip-on installation alleviates the need, and cost, for pipe flanges by simply using pipe clamps to secure the joint to existing system pipes.

SJ-205 Expansion Joint

Manufactured with a streamlined, self-cleaning arch, EVR's SJ-205 is designed to absorb vibration and eliminate buildup of suspended materials in the system flow. The SJ-205 expansion joint achieves considerable flexibility - rivalling standard multi-arch designs - with a single arch and the result is a light-weight joint with a very short face-to-face dimension.

The construction of the SJ-205 begins with a leak-proof inner sleeve, reinforced with multiple plies of polyester cord. The full faced rubber flange eliminates the need for gaskets, allowing for a fast, simple and completely leakproof installation. Available in three different pressure ratings, EVR's SJ-205 expansion joint can be fabricated from Neoprene, Nitrile, Hypalon, Viton or other suitable elastomers, allowing it to easily adapt to the requirements of any application.

SJ-21,22,23,24 Expansion Joints

With the same features as the SJ-21 style of expansion joint, the SJ-22 (2 arch), SJ-23 (3 arch) and SJ-24 (4 arch) styles offer greater movement absorption through their multiple arch design.

The SJ Series is the industry standard spool-type expansion joint. Available in configurations from zero to four arches - depending on movement requirements - and 3 standard pressure ratings in a variety of elastomers, this hand-built expansion joint can be adapted to the most unusual or difficult applications.

The SJ-221 expansion joint features a unique arch design which provides greater movement capabilities without increasing face to face requirements. The single arch SJ-221 provides the same movement capabilities of a traditional double arch design and the double arch SJ-221 is equivalent of a quadruple arch product. The same design which provides increased movements also increases the flexibility of the joint, resulting in lower spring rates. This means less stress on adjacent piping system components.

Flow process machinery can generate considerable vibration that equates to excessive stress loads on adjacent equipment. In process systems with corrosive or caustic materials, conventional expansion joints materials may not be suitable.

In a situation such as this, EVR's TE Series Teflon-lined expansion joint - available with multiple arches for higher movement capabilities - is the answer. The Series TE-51 joint enjoys all of the benefits and advantages of the EVR Series SJ-21 expansion joint. The carcass of the TE-51 joint can be fabricated from any of the materials in EVR's comprehensive inventory to suit the requirements of the process system. The TE-51 can be engineered and manufactured to withstand extreme temperature ranges, and can function under high pressures or strong vacuums.

The quality construction of the TE-51's leakproof Teflon sleeve is reinforced with multiple layers of high strength bias-ply polyester cord, providing superior pressure ratings not available with conventional molded Teflon expansion joints.

TJ-95 Expansion Joint

Offering an incredible degree of flexibility, EVR's TJ-95 expansion joint is ideal for ultra-pure environments or systems with glass or Teflon-lined piping.

Fabricated almost entirely from reinforced Teflon, the TJ-95 is non-conductive and well suited for low pressure, low temperature and corrosive chemical processes. The short face-to-face of the TJ-95 makes it suitable for even the most confining installations. Despite its light weight, it offers superb vibration and noise isolation for systems of all types.

Available in two, three and five convolution designs for varying degrees of pipe movement

Expansion Joint Control Unit

Expansion joints and pump connectors are not designed to support weight or limit pipe movement. Excess movement may be the result of abnormal temperature fluctuations, pressure surges, or insufficient anchoring or guiding of the piping. Where these situations occur, control units must be used to limit the amount and direction of movement to within the design limits of the flexible connection.

Control units consist of adaptor plates which are bolted to the back of the mating pipe flanges. These plates are connected by a tie rod which limits the axial extension. In cases where excess compression is anticipated, an optional sleeve is fitted over the tie rod to limit movement in both directions. The minimum number of control rods needed in a control unit is two; however depending on size or pressure, more may be required. The chart below can be used to determine the requirements for your application.