UE Union Elbow Stainless Steel SS316L Plumbing Fitting Pneumatic
Air Fitting High Quality Sanmin
Fittings are supplied assembled and finger tight . Disassembly
before use can allow the entry of dirt or other particles
1 . Insert the tubing into the fitting
Check That the tube rests firmly on the fitting shoulder and that
the nut is finger tight , At this point it is recommended that a
scribe mark be drawn on the hex of the extending onto the fitting
body . This mark will serve as an indicator for the starting point
and proper pull – up .
2 Tighten the nut
1-1/4 Turns of the nut are required for 1/4” (6mm) and higher ( See
Fig . A )
3/4 Turn of the nut is required for 3/16” (4mm) and lower ( See
Connections may be disconnected and remade repeatedly , without
loss of leak tight seal .
1. Before disconnecting , Mark the position of the nut inrelation to
the fitting body .
2. To reassemble , use a wrench to tighten nut to original position
3. Tighten slightly with wrench until a slight rise in torque is
Two different methods can be used to cut tubes :
1 . Tube Cuter
2 . Hacksaw
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 ).
Scratches on the tube might cause leaks . it is , therefore ,
important to handle the tube carefully to reduce the risk of leaks
Use : This is a “ No- Go ” Gauge and should be used as follows :
Make up to fitting according to the following instructions : 1/4
inch ( 6mm ) , 3/8 inch , 1/2 inch ( 12mm ) – make up 1-1/4 turns
from finger tight . Check gap between nut and body , using the
appropriate sized gauge . If the gauge slides easily into the gap ,
tighten the nut further until gauge can not enter the gap
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
Four variables must be considered when ordering tube for use with
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
Q: what types of products you can make ?
A: We can make many kinds of stainless steel materials and
brass,aluminum . Valve / solenoid valve / electric valve /
pneumatic valve and air cylinder products and so on .
Q: How much is our minimum order quantity ?
A: Our minimun quantity is 1 Piece .
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
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: 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
Why choose us
1: Sample order & small quantity order is acceptable .
2: Reliable quality assured and active after-sell service
3: One year quality guarantee
4: Large stock for fast shipping .
5: Customize according to your special request .
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