HCG Hex Coupling Stainless Steel 316L Tube Fitting Plumbing Fitting High Quality Sanmin
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HCG Hex Coupling Stainless Steel 316L Tube Fitting Plumbing Fitting High Quality 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
. 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 Cutter
To attain a leak free connection , the tubing must be cut squarely
. A good quality tube cutter with the appropriate blade for the
tubing material is recommended . Do not try to reduce the time of cutting by taking deep cuts with
each turn the cutter . This will work harden the tube . The end of the tube must be deburred to avoid damage to the fitting
and to ensure that the rube reaches the bottom of the fitting . 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 ). Tube Handling
Scratches on the tube might cause leaks . it is , therefore ,
important to handle the tube carefully to reduce the risk of leaks
. 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 . Why choose us
3: Customize according to your special request . 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,SMS,RSMT,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?
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