2
Mechanical Hot Tapping Machine
Operator’s Manual
CAUTION:
When used on a pressurized system an outward force on the
shaft will occur as the drill bit passes through wall of the pipe.
Forces can be as high as 45 lbs on a system pressurized at 300
psi. At any time after the drill bit passes through wall of the pipe
a reactive force must be applied to the end of the shaft until the
shaft is in the fully retracted position, failure to do so my cause
damage to the tool or personal injury.
Applying too much force while cutting the coupon can result
in a sudden breakthrough of the hole saw. A sudden break
through may result in the coupon retaining drill bit striking the
back side of the main and damaging the drill bit. One can prevent
this by cutting a spacer of 3/4” copper tube long enough to stop
the drill bit from hitting the back of the main. Slip this spacer over
the exposed shaft between the gland nut and the drill chuck.
Note: Use standard depth holes only.
Store shafts separate from hole saws. Allowing the hole saw
teeth to contact the shaft during transportation and storage can
damage the shaft. A damaged shaft can damage the Main Body
and cause the shaft to seize during use.
Description:
The Reed 08350 makes branch connections from 3/4” to 4” valve
size on any appropriately sized mainline for most piping materi-
als up to 300 psi. Reed 08350 eliminates the need to shutdown,
drain, cut, re-fit and refill piping systems.
See
www.reedmfgco.com
for a list of items included with the
purchase of Reed 08350.
Specifications:
Valve Size:
3/4” to 4”
Pipe Materials:
Black Iron, Steel, Galvanized,
Copper, Brass and PVC
Maximum Pressure:
Chilled water and hot water systems: 300 psi
Steam: 125 psi
Do not use DM3MECH on ammonia or any other caustic
systems.
Accessories
(Required but not supplied)
1. Correctly sized saddle (or threadolet).
2. Branch size shoulder nipple.
3. Branch sized full bore gate valve (or full bore ball valve).
4. Branch sized nipple long enough for drill bit to clear valve
when fully retracted.
5. Branch size or 1 1/4” NPT “T” and appropriate reducer
bushings. (Labeled as Bleed-Off “T”, Figure 1.)
6. Valve or hose bib, and appropriate pipe nipple and reducer
bushings. (Labeled as Bleed-off Valve, Figure 1.)
7. 3/8” or 1/2” Drill Motor.
8. Hose (if flushing chips or filings away).
Additional Accessories for 3” and 4” Flanged Valves.
A. Fabricated pipe saddle and flange (4 1/2” throat of
saddle to face of flange).
B. Branch size threaded flange.
C. Branch size by 1 1/4” bushing.
D. 1 1/4” by close nipple.
E. 1 1/4” by 1 1/4” by 1 1/4” “T”.
F. 1 1/4” to 1/2” bushing.
Shaft
Gland Nut
Sealing Unit
Bleed-Off “T”
Bleed-Off Valve
Branch
Valve
Shoulder Nipple
Saddle
Main Line
Boring
Assembly
Branch Size Nipple