METAL EXPANSION JOINTS                                        

Engineered for rigid piping systems

GMEJ100 Single Metal Expansion Joint

GMEJ100

A Single Metal Expansion joint is the simplest type of metal expansion   

joint with single bellow construction welded or flanged to end fittings. The single bellows can absorb any combination of basic movements in pipeline where there are proper anchors and guides.

Size Availability         Standard DN200 –  DN4600 (mm)

Design Conditions

Design Pressure                 Full vacuum ~ 6.89 MPa

Design Temperature         -250°C ~ +980°C

Design Fatigue Life            Standard 1000 cycles or above

GMEJ200 Double Metal Expansion Joint

GMEJ200

A Universal Double Metal Expansion Joint consists of two bellows                      

connected by a center tube, welded or flanges to pipe ends. The universal arrangement allows greater axial, lateral and angular movements than a single expansion joint. Increasing the center spool length produces increased movement capability.

Like the single expansion joint, the double metal expansion joint are used when proper anchors and guides are present.

Size Availability         Standard DN200 – DN4600 (mm)

Design Conditions

Design Pressure                 Full vacuum ~ 6.89 MPa

Design Temperature         -250°C ~ +980°C

Design Fatigue Life             Standard 1000 cycles or above

GMEJ210 Tied Double Metal Expansion Joint

GMEJ210
A Tied Double Metal Expansion Joint consists of two bellows
connected by a center tube piece with tie rods. The tie rods are connected to the restraining flanges through spherical washers which allow for movement between the tie rods and the flanges during operation. This type of expansion joint can accommodate large movements in the lateral plane and can operate in any direction.

Size Availability         Standard DN200 – DN4600 (mm)

Design Conditions
Design Pressure                 Full vacuum ~ 6.89 MPa
Design Temperature         -250°C ~ +980°C
Design Fatigue Life             Standard 1000 cycles or above

GMEJ300 Gimbal Metal Expansion Joint

GMEJ300
A Gimbal Metal Expansion Joint is designed to absorb pressure 
thrust and angular rotation in any plane by two pairs of hinges connected to a common floating gimbal ring. The gimbal ring, hinges and pins must be designed to restrain the thrust of the expansion joint due to internal pressure and extraneous forces.

Size Availability         Standard DN200 – DN3600 (mm)

Design Conditions
Design Pressure                 Full vacuum ~ 6.89 MPa
Design Temperature         -250°C ~ +980°C
Design Fatigue Life             Standard 1000 cycles or above

GMEJ310 Hinged Metal Expansion Joint

GMEJ310
A Hinged Metal Expansion Joint contains one bellow and is  
designed to absorb angular rotation in one plane only by one pair of hinges. The hinges and hinge pins must be designed to restrain the thrust of the expansion joint due to internal pressure and extraneous forces. Hinged expansion joint should be used in sets of two or three bonded to absorb combinations of movements in piping system.

Size Availability         Standard DN200 – DN3600 (mm)

Design Conditions
Design Pressure                 Full vacuum ~ 6.89 MPa
Design Temperature         -250°C ~ +980°C
Design Fatigue Life             Standard 1000 cycles or above

GMEJ400 Pressure Balanced
Metal Expansion Joint

GMEJ400
A Pressure Balanced Metal Expansion Joint is designed to absorb axial 
movement and/or lateral deflection while pressure loading upon piping or equipment is considered excessive or objectionable. Pressure balanced metal expansion joint restrains the pressure thrust through tie devices, where two bellows are used in the flow end and a single bellow in the balancing end. The balance bellow will be subjected only to axial movement if the tie rods are properly designed to rotate or pivot at their attachment points.

Size Availability         Standard DN200 – DN3000 (mm)

Design Conditions
Design Pressure                 Full vacuum ~ 6.89 MPa
Design Temperature         -250°C ~ +980°C
Design Fatigue Life            Standard 1000 cycles or above

GMEJ600 Rectangular Metal Expansion Joint

GMEJ600
Rectangular Expansion Joint may be subjected to axial movement,  
angular movement, lateral deflection or any combination of these occurring at the interface of bellows and the associated ducting
system.

Size Availability        Standard Pipe sectional area 0  – 9 m

Design Conditions
Design Pressure                 ≤ 0.05 MPa
Design Temperature         -250°C ~ +980°C
Design Fatigue Life             Standard 1000 cycles or above

Garlock Rubber Expansion Joints

Garlock Rubber Expansion Joints are highly regarded in the industry  

» Development of high temperature elastomers to the levels now considered the industry standard
» Development of the patented construction with bonded rectangular body rings
» Creation of fused FEP liners designed specifically for chemical use
» Abilities to combine fabric, FEP and elastomers effectively
» Design of spool type joints to over 3 metres I.D.’s
» Development of the flowing arch design