U Type Equal Union Pneumatic Air Fitting Tube To Union High Quality
Plumbing Fitting Sanmin
Tube Fittings Description
The tube fitting is a mechanism used both to seal and to grip
tubing . The mechanical advantage and geometry of this kind of
fitting produces a leak – tight assembly .
To assemble , simply insert the tube into the complete assembly
until the tube bottoms – out against the shoulder of the fitting
body . The two ferrules are driven forward between the nut and
fitting body using the mechanical force created by rotating the nut
clockwise . The Back ferrule is driven against the tapered rear of
the front ferrule is driven by force into the tapered mouth of the
body .
The rear ferrule is swaged radially inwards on the tube while
lifting the front ferrule out to form a full – faced seal on the
tapered surface of the body .
The 1-1/4 Turn of the nut from the hand tight position assures
consistent drive of the sealing members . This ensures an effective
seal against high pressure as well as ultra high vacuum conditions
.
Tube cutting
Two different methods can be used to cut tubes :
1 . Tube Cuter
2 . Hacksaw
Hacksaw Cutting
In order to cut the tube with a hacksaw and get square ends , the
tube must be cut with guide blocks
This method of cutting necessitates deburring of the tube ends.
Warning
Do not hold the tube in a vise in the place where it will be
inserted into the fitting ( the vise will leave a mark on the tube
that may cause leaks , and might cause ovality ).
Some Recautions to be taken
1.Tubes must not be dragged on the floor .
2.Tubes must not be dragged out of a tubing rack , especially in
case of large OD tubes
Copper Tubing
If using copper tubing from a roll , hold the end of the tube and
roll the roll outwards allowing the tubing to lie on a flat surface
.
High Safety
In applications where severe conditions and high pressure exist ,
we recommend the following installation procedures :
1. Check that the nut is finger tight
2. Insert the tube ( Up to the shoulder )
3. Rotate the nut with a wrench until the tube does not rotate freely
.
4. Mark position of the nut .
5. Rotate the nut 1-1/4 turns .
This method ensures that even if the tube O.D. is at the minimum
tolerance , the ferrules will be in contact with the tube for the
full 1-1/4 rotation.
In order to assure maximum fitting reliability and performance ,
great care should be given when selecting the tubing for each
application
Tube Selection
Four variables must be considered when ordering tube for use with
fittings :
1. Material
2. Tube wall thickness
3. Tube surface finish
4. Tube hardness
Tubing should comply with standard ASTM A213 or ASTM A269 , be
seamless , and fully annealed .
The tube must be red of scratches and suitable for bending and
flaring .
FAQ
Q: What ' s your delivery date ?
A: It depends on the number of orders . Delivery date is 7 - 30
days .if small order,pls buy from our aliexpress shop, If you need
emergency products , we can speed up the production of the first
arrangement .
Q: Do your company have specialized technical personnel ?
A: Design as your requirements,and have QC for make 100% inspection
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years
and professional to make . But you need give us the authorization
for work.
Q: What is the price of the product ?
A: Our prices are based on the size and type of material , if you
can give me the information ,
then we can give you an estimated price is for reference only . We
can do any size and any desgin .
Q: How much is our minimum order quantity ?
A: Our minimun quantity is 1 Piece .
Why choose us
1: Various style for each products and completely series pneumatic
products .
2: Reliable quality assured and active after-sell service
3: One year quality guarantee
4: Sample order & small quantity order is acceptable .
5: Large stock for fast shipping .
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