UCR Union Cross Stainless Steel SS316L Tube Fittings Plumbing Fitting Pneumatic Air Fitting High Quality Sanmin
Installation Instructions
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 Fig.B )
Reassembly Instruction
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 felt .
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 ).
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 .
Inspection Tubing
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
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
Why choose us
1: Various style for each products and completely series pneumatic products .
2: Sample order & small quantity order is acceptable .
3: Reliable quality assured and active after-sell service
4: Customize according to your special request .
5: Large stock for fast shipping .
Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
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 if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point |
High Temperature Environment Countermeasures |
Extreme Cold Environment Countermeasures |
| Seals |
Fluororubber, PTFE |
Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication |
High-temperature synthetic grease (low volatility) |
Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment |
Strengthen cooling, efficient water removal |
Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components |
Reserve expansion clearance |
Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components |
High heat-resistant grade coils, heat dissipation, low power consumption |
Install insulation boxes, local heating, prevent cold condensation |
| Installation |
Keep away from heat sources, add heat insulation plates |
Avoid exposure to wind and snow, wrap with thermal insulation materials |
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