Products >  Metraloop®

Dog Leg Expansion Joints for Thermal and Seismic Applications

Seismic, thermal and building movement expansion joint

The Dog Leg is a related product to the Metraloop, it incorporates the same proven hose and braid technology at right angles to each other.  This gives the benefit of absorbing movement from two different runs of pipe.  Another advantage is that the dog Leg stays in the original path of the pipping, making it the most compact way to absorb pipe movement.  The Dog Leg also has the same reduced anchor loads like the Metraloop.  For all these reasons the Dog Leg is often used in Value Engineering a piping system

PRODUCT TABLES

Fittings – Sched. 40 Carbon Steel Hose & Braid – Series 300 Stainless Steel
(† See Temp Correction Factor)
Custom movements available. Contact Factory.

PIPE
SIZE
MODEL # MOVEMENT CENTER TO
END (in.)
PSI
SINGLE
BRAID
MAX
SATURATED
STEAM
PRESS.
*SPRING
FORCE
LBS.
1/2″       (15mm) DLT80050 ±4″ 20 1075 300 45
3/4″       (20mm) DLT80075 ±4″ 21 792 300 47
1″          (25mm) DLT80100 ±4″ 22.5 571 300 53
1-1/4″     (30mm) DLT80125 ±4″ 24 531 300 66
1-1/2″     (40mm) DLT80150 ±4″ 25.5 472 300 70
2″          (50mm) DLT80200 ±4″ 28 500 300 78
2-1/2″     (65mm) DLT80250 ±4″ 32.5 387 300 83
3″          (80mm) DLT80300 ±4″ 34.5 288 216 90
4″        (100mm) DLT80400 ±4″ 38.5 232 186 120

* Spring Force: These values reflect the total force required to move the Dogleg its full rated movement for 150 P.S.I. at 70 F.
For higher pressures please contact Metraflex (312)-738-3800

Fittings – Sched. 40 Carbon/Steel Hose & Braid – Series 300 Stainless Steel
(† See Temp Correction Factor)
Custom movements available. Contact Factory.

PIPE
SIZE
MODEL # MOVEMENT CENTER TO
END (in.)
PSI
SINGLE
BRAID
*SPRING
FORCE
LBS.
2″          (50mm) DLF80200 ±4″ 26 500 78
2-1/2″     (65mm) DLF80250 ±4″ 30 387 83
3″          (80mm) DLF80300 ±4″ 32 288 90
4″        (100mm) DLF80400 ±4″ 36 232 120
5″        (125mm) DLF80500 ±4″ 39.5 191 186
6″        (150mm) DLF80600 ±4″ 43 165 202
8″        (200mm) DLF80800 ±4″ 48 212 260
10″       (250mm) DLF81000 ±4″ 55 175 283
12″       (300mm) DLF81200 ±4″ 61.5 160 390
14″       (355mm) DLF81400 ±4″ 67.5 110 706
16″ **     (400mm) DLF81600 ±4″ 72 110 900
18″ **     (455mm) DLF81800 ±4″ 77 85 1000

* Spring Force: These values reflect the total force required to move the Dogleg its full rated movement for 150 P.S.I. at 70 F.
For higher pressures please contact Metraflex (312)-738-3800

Fittings – Sched. 40 Carbon/Steel Hose & Braid – Series 300 Stainless Steel
(† See Temp Correction Factor)
Custom movements available. Contact Factory.

PIPE
SIZE
MODEL # MOVEMENT CENTER TO
END (in.)
PSI
SINGLE
BRAID
MAX
SATURATED
STEAM
PRESS.
*SPRING
FORCE
LBS.
1/2″       (15mm) DLW80050 ±4″ 20 1075 300 45
3/4″       (20mm) DLW80075 ±4″ 21 792 300 47
1″          (25mm) DLW80100 ±4″ 22.5 571 300 53
1-1/4″     (30mm) DLW80125 ±4″ 24 531 300 66
1-1/2″     (40mm) DLW80150 ±4″ 25.5 472 300 70
2″          (50mm) DLW80200 ±4″ 28 500 300 78
2-1/2″     (65mm) DLW80250 ±4″ 32.5 387 300 83
3″          (80mm) DLW80300 ±4″ 34.5 288 216 90
4″        (100mm) DLW80400 ±4″ 38.5 232 186 120
5″        (125mm) DLW80500 ±4″ 43 191 153 186
6″        (150mm) DLW80600 ±4″ 46.5 165 132 202
8″        (200mm) DLW80800 ±4″ 53 212 115 260
10″       (250mm) DLW81000 ±4″ 60 175 100 383
12″       (300mm) DLW81200 ±4″ 66.5 160 94 390

† When ordering a Dogleg with double-braid, please include the letter “D” at the end of the Model #. Example: DLW30200D
* Spring Force: These values reflect the total force required to move the Dogleg its full rated movement for 150 P.S.I. at 70 F.
For higher pressures please contact Metraflex (312)-738-3800

Fittings – Sched. 40 Carbon/Steel Hose & Braid – Series 300 Stainless Steel
(† See Temp Correction Factor)
Custom movements available. Contact Factory.

PIPE
SIZE
MODEL # MOVEMENT CENTER TO
END (in.)
PSI
SINGLE
BRAID
*SPRING
FORCE
LBS.
2″          (50mm) DLG80200 ±4″ 28 500 78
2-1/2″     (65mm) DLG80250 ±4″ 32.5 387 83
3″          (80mm) DLG80300 ±4″ 34.5 288 90
4″        (100mm) DLG80400 ±4″ 38.5 232 120
5″        (125mm) DLG80500 ±4″ 42 191 186
6″        (150mm) DLG80600 ±4″ 45.5 165 202
8″        (200mm) DLG80800 ±4″ 51 212 260
10″       (250mm) DLG81000 ±4″ 58 175 283
12″       (300mm) DLG81200 ±4″ 64.5 160 390

† When ordering a Dogleg with double-braid, please include the letter “D” at the end of the Model #. Example: DLG30200D
* Spring Force: These values reflect the total force required to move the Dogleg its full rated movement for 150 P.S.I. at 70 F.
For higher pressures please contact Metraflex (312)-738-3800

PIPE
SIZE
MODEL # MOVEMENT CENTER TO
END (in.)
PSI
SINGLE
BRAID
*SPRING
FORCE
LBS.
1/2″       (15mm) DLS80050 ±4″ 17.5 706 45
3/4″       (20mm) DLS80075 ±4″ 19.5 577 47
1″          (25mm) DLS80100 ±4″ 22 470 53
1-1/4″     (30mm) DLS80125 ±4″ 24.5 361 66
1-1/2″     (40mm) DLS80150 ±4″ 26 329 70
2″          (50mm) DLS80200 ±4″ 29 317 78
2-1/2″     (65mm) DLS80250 ±4″ 33 272 83
3″          (80mm) DLS80300 ±4″ 35 201 90
4″        (100mm) DLS80400 ±4″ 38.5 142 120