Armstrong 4302 Series Руководство - Страница 5

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4302 Sealing Arrangements
Armstrong Series 4302 split coupled Vertical In-Line pump is available with two normal mechanical seal arrangements. Each arrangement
may be removed quickly and easily for servicing, without costly removal of the motor or rotating assembly from the pump casing. The high
performance outside seal combines the advantages of a balanced seal with premium quality. The internal mechanical seal provides an
economical alternative.
Outside Balanced Mechanical
Seal Arrangement
1
2
5
7
8
4382 Sealing Arrangements
Armstrong Series 4382 close coupled Vertical In-Line pump is supplied with an economical internal single spring unbalanced mechanical
seal. The seal is serviced by removing the rotating element from the casing. The pump casing typically remains in the piping.
dualARM Pressure/Temperature Parameters
(20.00) 300
(17.24) 250
(13.79) 200
(10.34) 150
(6.90) 100
(3.45) 50
(0) 0
0
50
(-18)
(10)
temperature °f(°c)
dualARM Vertic al In-Line Pumps
Inside Unbalanced Mechanical
Seal Arrangement
3
1
4
7
6
1
1
2
2
3
3
4
4
5
5
4
6
6
7
7
b
a
100
150
200
250
(38)
(66)
(93)
(121)
Motor Shaft
Shaft Sleeve
Stationary Seat
Secondary Seal
Rotating Face
Spring
Rotating Hardware
l e g e n d
a
4302 & 4382 bf
b
4302 & 4382 dbf
All seals supplied with Silicon carbide seats.
notes: For clean untreated water. For pumping temperatures above 200°f,
longer mechanical seal life can be achieved on Series 4302 if flushing
liquid is cooled by an external heat exchanger to maintain seal flush
water below 200°f.
1
Pump Shaft
6
2
Rotating Hardware
5
3
Spring(s)
4
4
Secondary Seal
2
5
Rotating Face
3
6
Stationary Seat
7
Gland Plate
8
8
Throttle Bushing