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General Connector Questions |
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1.
Is it alright to
get form release on a rubber connector?
2.
How long will an
A-LOK connector last under normal sanitary conditions?
3.
How long will an
A-LOK connector last under salt water conditions?
4.
If the way an A-LOK
connector is cast in is not perfectly round can it still
be used?
5.
If for whatever
reason a connector is removed from a structure can it be
reused?
6.
Is there a front
and a back to an A-LOK compression connector?
7.
How much head
pressure can a A-LOK compression connector hold?
8.
What is the largest
percentage of grade an A-LOK compression style connector
can handle without skiving the mandrel?
9.
What is the largest
percentage of grade a Z-LOK cast in place boot style
connector can handle without skiving the mandrel?
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| Connector Repair |
|
1.
How do we repair A-
LOK compression connectors when they leak? Be sure
manhole is safe to enter.
2.
What if a splice on
a connector separates or breaks?
3.
What if the
contractor tears an A-LOK compression connector before
or during installation?
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| Mandrels |
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1.
Do you need mandrels
for every size pipe?
2.
How long does a
fiberglass mandrel last?
3.
What determines
equipment delivery time?
4.
Why is there a flat spot on the mandrel?
5.
What is a good way to organize and store mandrels?
6.
What size hole do I
need to drill if I’m bolting the mandrel to the form?
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| Installation |
|
1.
How close can I put
two holes in a manhole using A-LOK compression
connectors?
2.
What distance can an
A-LOK compression connector be placed from the manhole
spigot?
3.
What distance can an
A-LOK compression connector be placed up from a manhole
base bottom?
4.
Can a contractor push the pipe in and out of an A-LOK
compression connector? |
| |
| General Connector Questions |
|
1.
Is it alright to get form release on a rubber connector?
|
|
Sprayed on form oil won’t
hurt but you want to try to avoid it as much as
possible. We suggest brushing it on the mandrel to keep
it away from the connector. |
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top of page |
|
2.
How long will an A-LOK connector last under normal
sanitary conditions? |
| For the life of the concrete
structure. The first A-LOK installations were done in
1971 and are still intact and working fine. |
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page |
|
3.
How long will an A-LOK connector last under salt water
conditions? |
| For the life of the concrete
structure. |
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top of
page |
|
4.
If the way an A-LOK connector is cast in is not
perfectly round can it still be used? |
| As long as it is not out of
round by more than ¼”. |
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top of
page |
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5. If for whatever
reason a connector is removed from a structure can it be
reused? |
| Yes, as long as it is
properly cleaned, by removing all concrete from the
connector. |
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top of
page |
| 6.
Is there a front and
a back to an A-LOK compression connector?
|
| NO |
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top of
page |
|
7. How much head
pressure can a A-LOK compression connector hold? |
| 15 PSI or 34.5 feet. |
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top of
page |
|
8. What is the
largest percentage of grade an A-LOK compression style
connector can handle without skiving the mandrel? |
| 18.5 % |
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top of
page |
|
9. What is the
largest percentage of grade a Z-LOK cast in place boot
style connector can handle without skiving the mandrel? |
| 46.50 % |
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top of
page |
| Connector Repair |
|
1.
How do we repair A- LOK compression connectors when they
leak? Be sure manhole is safe to enter. |
|
1. Check for debris trapped in between connector and OD
of pipe. If debris found remove by running a thin trowel
in between the connector and the pipe.
|
|
2. Inflate the connector if it not tight to the pipe.
|
|
3. Use urethane grout material, AV-202, to stop the
leak. |
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top of
page |
|
2.
What if a splice on a connector separates or breaks? |
| The connector should be
replaced. |
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top of
page |
|
3.
What if the contractor tears an A-LOK compression
connector before or during installation? |
|
Call A-LOK 1-800-822-2565 it may be able to be repaired. |
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| Mandrel |
|
1.
Do you need mandrels for every size pipe? |
| Yes, unless the difference
between the pipes OD’s is plus or minus ¼”. |
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top of
page |
|
2.
How long does a fiberglass mandrel last? |
| Depending on how much it’s
used, if it’s cleaned and oiled after use and removed
from the structure with a dead blow hammer there is no
telling how long it can last. |
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top of
page |
|
3.
What determines equipment delivery time? |
-
Is it a stock or non
stocking item?
-
The quantity ordered 1
or 100.
-
Is it a size we have
made or a brand new size?
-
The travel time from
our plant(s) to yours.
-
How many orders are
already in house at the time your order is placed?
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page |
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4. Why is there a flat
spot on the mandrel? |
| The flat spot helps center
pipe, over 18 inches in diameter, and a compression
connector for installation. The flat spot should always
be on the outside and towards the bottom of a manhole. |
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page |
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5. What is a good
way to organize and store mandrels? |
|
Mandrels should
be matched in pairs by their size. |
|
|
|
6. What size hole
do I need to drill if I am bolting the mandrels to the
form ? |
|
You will need to drill a 13/16 of an inch
hole. |
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| Installation |
|
1.
How close can I put two holes in a manhole using A-LOK
compression connectors? |
| 1/2 the distance of the
smallest pipes outside diameter, OD. |
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top of
page |
|
2.
What distance can an A-LOK compression connector be
placed from the manhole spigot? |
| 6 inches, plus the joint. |
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top of
page |
|
3.
What distance can an A-LOK compression connector be
placed up from a manhole base bottom? |
|
2-4
inches. |
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top of
page |
|
4.
Can a contractor push the pipe in and out of an A-LOK
compression connector? |
Yes, if the pipe is beveled
and lubed and properly centered in the pipe, but it’s
not recommended.
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page |
