"Camel" Liquid Ring Medical Vacuum
Medical Systems
1-4
1.5.4 Exhaust Piping
Connect pipe to the air discharge connection on the Camel reservoir. This exhaust line must be piped outside of the
building in accordance with NFPA 99. To ensure that no restriction of airflow will occur, size the piping according
to the following chart. All piping must be either seamless copper tubing or other corrosion-resistant metallic tubing
as detailed in NFPA 99. A flexible connector (shipped loose) must be installed on each exhaust port of the vacuum
pump before connecting to the main exhaust line leading outdoors. Use care to avoid long horizontal pipe runs
and/or dips in piping that could accumulate condensate causing high inlet back pressure
.
Slope horizontal pipe runs
so that accumulated condensate will run back towards Camel tank. The outside pipe must be turned down and
screened to prevent contamination.
LifeLine
System Exhaust Pipe Length (ft) - See Notes
Systems
25
50
75
100
150
200
250
300
350
400
450
500
Simplex
3
HP
2.00 2.00 2.00 2.00
2.00
2.00
2.00
2.00
2.00 2.00 2.00
2.00
Simplex
5
HP
2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 3.00 3.00 3.00
Simplex
7.5
HP 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 3.00 3.00 3.00 3.00
Simplex
10
HP 2.00 2.00 2.00 2.00 2.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00
Duplex
3
HP
2.00 2.00 2.00 2.00
2.00
2.00
2.00
2.00
2.00 2.00 2.00
2.00
Duplex
5
HP
2.00 2.00 2.00 2.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00
Duplex
7.5
HP 2.00 2.00 2.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00
Duplex
10
HP
3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 4.00 4.00 4.00 4.00
Triplex
5
HP
3.00 3.00 3.00 3.00
3.00
3.00
3.00
3.00
3.00 4.00 4.00
4.00
Triplex
7.5
HP 3.00 3.00 3.00 3.00 3.00 3.00 3.00 4.00 4.00 4.00 4.00 4.00
Triplex
10
HP
3.00 3.00 3.00 3.00 3.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00
Notes:
1. All pipe sizes are based on the following: copper pipe (Type L), 14.7 psia, 70
F.
2. The minimum pipe size must be maintained for the total length of the exhaust pipe. Use next larger size pipe in the
event the minimum size is not available.
3. When determining the total pipe length, add all the straight lengths of pipe together in addition to the number of
elbows times the effective pipe length for that pipe size. (See the table and example below.)
Effective Pipe Length Equivalent to each 90 degree Elbow
Pipe Size (in.)
1.50 2.00 2.50 3.00 3.50 4.00
5.00
6.00
Eff. Pipe Length (ft)
3.6 4.9 6.4 7.9 9.4 10.0
11.9
13.2
Example:
Select the pipe size for a Duplex 7.5 HP with 70 feet of straight pipe and six elbows:
A)
Select the pipe size of 2" diameter for 70 feet of straight pipe.
B)
Determine the eff. Pipe length for an elbow of 2" dia. (EPL= 4.9 ft / elbow).
C)
Calculate the SYSTEM PIPE LENGTH {SPL (2.0" D) = 70 + (6 x 4.9) = 99.4 ft}
D)
Check this SYSTEM PIPE LENGTH to see if it exceeds the minimum pipe size. In this case it does,
select the next larger pipe size from the table (D = 3").
E)
To double-check the pipe size, recalculate the SPL with the new diameter.
SPL (D = 3") = 70 + (6 x 7.9) = 117.4 ft. This is in the allowable range.
WARNING:
The vacuum exhaust vent must be located away from medical air intakes, doors and openings in
the buildings to minimize possible contamination to the facility, in accordance with NFPA 99.
