【 美国帕利斯防震管 】
packless model vaf vibration absorbers
are designed for installation in the suction and discharge lines of
air conditioning and refrigeration systems to dampen the
transmission of air compressor-induces vibration through system
piping.
packless vaf’s are constructed of deep pitch corrugated tubing for
increased flexibility and vibration absorption, covered by high
tensile wire braid for superior strength. tubing and braid are
reinforced by ferrules at each end, and connected to female copper
tube ends by high temperature braze alloys. the units are designed
for making sweat connections to refrigerant piping. sixteen models
are available to fit copper tubing sizes from 1/4 through 4-1/8
inches o.d.
each vaf is pressure tested then carefully vacuum tested using a
highly sensitive helium mass spectrometer leak detection device.
units are cleaned, dehydrated and sealed in plastic film after
final installation. vaf’s are available either in bulk or
individually boxed.
packless vaf’s are recognized under the component programs of
underwriter’s laboratories, inc. (u.l.) and the canadian standards
association (c.s.a.) for application on both suction and discharge
lines in sizes through 3-1/8 inches o.d., and for suction side only
in sizes 3-5/8 and 4-1/8 inches o.d.
installation
packless vaf’s function best when installed as close to the
compressor as possible, and perpendicular to the major vibration
direction as shown below.
for optimum absorption of vibration, the refrigerant line should be
anchored at the end of the vaf furthest from the vibration
source.
install packless vaf’s horizontally, as shown above, wherever
possible. care should be taken to allow sufficient space for the
vaf so that it will not be subject to static compression or tension
after soldering in place. units should be installed in a straight
line; they are not intended to compensate for offset
piping.
although high temperature alloys are used to braze the joints of
packless vaf’s, the torch flame should nevertheless be directed
away from the ferrule when making the sweat connection of the vaf
to the piping.
model number |
to fit copper tubing having: |
shipping weight (lb.) |
dimensions |
u.l. style number |
max. working pressure (psig) |
burst pressure (psig) |
actual
o.d.(in.) |
nominal
o.d.(in.) |
flex.
tubing i.d. a |
tube end
length b |
flex.
tubing length c |
overall
length d |
ferrule
length e |
vaf-1 |
1/4 |
1/8 |
1/4 |
1/4 |
1/2 |
6 |
7 |
1/2 |
p-1 |
500 |
2500 |
vaf-2 |
1/4 |
1/8 |
1/4 |
1/4 |
1/2 |
6-1/2 |
7-1/2 |
1/2 |
p-2 |
500 |
2500 |
vaf-3 |
3/8 |
1/4 |
3/8 |
3/8 |
5/8 |
7 |
8-1/4 |
1/2 |
p-3 |
500 |
2500 |
vaf-4 |
1/2 |
3/8 |
3/8 |
3/8 |
3/4 |
7-1/2 |
9 |
1/2 |
p-4 |
500 |
2500 |
vaf-5 |
5/8 |
1/2 |
5/8 |
1/2 |
7/8 |
8 |
9-3/4 |
1/2 |
p-5 |
500 |
2500 |
vaf-6 |
3/4 |
5/8 |
5/8 |
1/2 |
1 |
8 |
10 |
1/2 |
p-6 |
500 |
2500 |
vaf-7 |
3/4 |
5/8 |
1-1/4 |
3/4 |
1-1/8 |
9 |
11/1/4 |
5/8 |
p-7a |
500 |
2500 |
vaf-8 |
7/8 |
3/4 |
1-1/4 |
3/4 |
1-1/4 |
9 |
44-1/2 |
5/8 |
p-8a |
500 |
2500 |
vaf-9 |
1-1/8 |
1 |
1-3/4 |
1 |
1-1/2 |
10 |
13 |
15/16 |
p-9a |
500 |
2500 |
vaf-10 |
1-3/8 |
1-1/4 |
2-1/2 |
1-1/4 |
1-5/8 |
11-1/2 |
14-3/4 |
1 |
p-10a |
500 |
2500 |
vaf-11 |
1-5/8 |
1-1/2 |
3-3/4 |
1-1/2 |
2 |
13 |
17 |
1-1/8 |
p-11a |
500 |
2500 |
vaf-82 |
2-1/8 |
2 |
5 |
2 |
2-1/2 |
14 |
20 |
1 |
p-82 |
390 |
1950 |
vaf-83 |
2-5/8 |
2-1/2 |
8 |
2-1/2 |
3 |
18 |
24 |
2 |
p-83 |
340 |
1700 |
vaf-84 |
3-1/8 |
3 |
11 |
3 |
3-1/2 |
20 |
27 |
2 |
p-84 |
300 |
1500 |
vaf-87 |
3-5/8 |
3-1/2 |
14 |
3-1/2 |
4 |
24 |
32-5/8 |
2 |
p-87 |
175* |
525 |
vaf-86 |
4-1/8 |
4 |
16 |
4 |
4-1/2 |
24 |
33-3/8 |
2 |
p-86 |
175* |
525 |
|
本产品的加工定制是否,品牌是帕利斯,型号是VAF-10,类型是精密空调,用途是食品,控温范围是帕利斯,流量压力是帕利斯,风量是帕利斯(m3/h),制冷量是帕利斯(kw)
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