Dayton Superior D250L L Series #9 (29mm) Bar Lock Rebar Coupler

The D250L Bar Lock L-Series Coupler is similar to the Standard Coupler but is designed for use when higher loads are required, such as extreme tension/compression application and/or seismic loading conditions. L-Series couplers are available in rebar sizes #4 through #14 and exceed 160% of specified yield of Grade 60 rebar. L-Series couplers are approved for use by most state DOTs, are recognized as an ICC Type 2 seismic splice, and meet ACT specifications. L-Series couplers are also available in transition sizes, weldable half couplers and epoxy coated

INSTALLATION

1. Insert the end of the first rebar halfway into the

coupler until it contacts the center stop pin.

2. Holding the first rebar in place, tighten all the bolts

on that half until they are hand tight against the rebar.

3. Insert the end of the second rebar halfway into the

coupler until it contacts the center stop pin.

4. Holding the second rebar in place, tighten all the

bolts on that half until they are hand tight against the

rebar.

5. In a random alternating pattern, tighten all bolts to

approximately 50% of the specified bolt torque value

6. In a random alternating pattern, tighten all bolts to

approximately 75% of the specified bolt torque value.

7. In a random alternating pattern, tighten all bolts until

all the heads of the bolts shear off.

8. Prior to bolt tightening, the serrated rails MUST

remain aligned in the same position as they were

manufactured. If they are damaged or knocked out of

alignment while positioning, installation MUST cease

and a new coupler used.

9. Bolt tightening MUST be done in a random

alternating pattern similar to tightening the lug nuts

on an automobile wheel.

10. A high quality 1? pneumatic drive impact wrench,

with at least 100 psig air flow and 185 CFM of

delivered air through a no less than 0.75? hose

MUST be used for installation.