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1 4 brass water nylon tube fittings

author:MF manufacturerstime:2022-03-09 10:32:46

Diagram of connection method of instrument connector

1 4 brass water nylon tube fittings

1 4 brass water nylon tube fittings

one:The structure of the pipe joint

Standard pipe fittings consist of nuts、snap ring(Some have only one snap ring)、joint、and tube composition。

1 4 brass water nylon tube fittings

The installed shape of the standard pipe joint is shown in the figure

1 4 brass water nylon tube fittings

The principle of the sealing of pipe joints:is tightened by the nut,Deform the snap ring against the tube,form a seal。

1 4 brass water nylon tube fittings

two:Quick connector installation and removal steps

(1 4 brass water nylon tube fittings)installation steps

1、Wrap the right amount of thickness with raw tape at the threaded quick connector;

(1 4 brass water nylon tube fittings)2、Tighten the quick connector with the proper force;

3、Cut the top of the tube to be inserted vertically with a cutter;

4、Insert the cut end of the tube into the quick connector,Push it hard;

5、Verify that the tubes are securely connected,Pull the tube with the right amount of force,The tube cannot be pulled out。

Disassembly steps

1、First check whether the medium passing through the joint pipeline is blocked;

(1 4 brass water nylon tube fittings)2、With one hand, use the index finger and thumb to press the collet to the quick connector while pressing,Pull the tube out with the other hand。

three:Installation of new pipe joints

step one:Insert the tube into the fitting,Confirm down to the low end of the nut

1 4 brass water nylon tube fittings

Step 2:Tighten the nut by hand,and mark a location(See6point)

1 4 brass water nylon tube fittings

Step 3:Use a wrench to turn the nut clockwise1again1/4lock up,see mark in9point

1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

Four:Precautions for the installation of new pipe joints

for1inch(25mm)and below the pipe diameter,Tighten by hand and then turn with a wrench1 ¼circle。for1/16、1/8and3/16inch(2、3、4mm)Pipe diameter,Just turn with a wrench3/4circle。for1 ¼、1 ½、2inches and28、30、32、38mmFitting installation of pipe diameter,requires professional tools,Because it is rarely used in the field。

The change of the tube can be seen in the figure

1 4 brass water nylon tube fittings

Fives:Reinstallation of pipe joints

For already tightened fittings,Before removing, please mark the position between the nut and the connector,when reinstalling,First tighten the nut by hand,Then use the wrench to put the nut on the original position.。For pipe joints that have been disassembled and reassembled many times,Can be put on the nut after returning to the original position,re-rotate10°~ 20°(No more than one side of the hexagon nut1/3,i.e. not more thanBwhere) 。

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

Manufacturer provides special tools,Can be used to check whether the fittings are tight,Different pipe diameters have different standards

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

This tool can be used to identify whether the pipe joint is tightened or not,caution:it only applies1inch(25mm)and below metal pipe joints

(1 4 brass water nylon tube fittings)Considerations when choosing a tube:Pay attention to the wall thickness of the pipe within the specified range(see table below),because the wall is too thick,Snap ring does not work,The wall is too thin,Will cause the pipe to deform and crack

1 4 brass water nylon tube fittings

six:Sealing of pipe joints

There are two ways to seal the pipe joint

1.Sealing of raw tapes:

(1 4 brass water nylon tube fittings)Note the following points:

  • Clean the joint threads before applying the raw material tape
  • The direction of the upper raw material belt is clockwise
  • The raw material tape cannot extend beyond the threaded end of the joint
  • After the raw material tape is cut,to stick to the thread
1 4 brass water nylon tube fittings

2.sealant seal

(1 4 brass water nylon tube fittings)Note the following points:

  • Clean connector threads before applying sealant
  • Coat the second and third turns of the thread with sealant。(360°)
1 4 brass water nylon tube fittings

seven:The material of the pipe joint

Stainless steel:SS

brass:B

carbon steel:S

aluminum:A

nylon:NL

perfluoroalkoxy: PFA

TFE: T

Precautions:

Because the hardness of the metal pipe is softer than the material of the pipe joint,Therefore, stainless steel pipes cannot use copper joints;

If the pipe and the fitting are of the same material,The metal tube needs to be annealed(General Metal Materials,such as stainless steel、copper、titanium、carbon steel、Alloys etc. have been annealed)

very soft tube(Such asTygon polyethylene)or non-plasticPVCTube,Padded when installing,And pay attention to sealing。

Eight:Types of Fittings

An example of a name label:

1/4Tube:Express1/4inchODthe tube

Tube1/4:indicates connection1/4inchODpipe joint

8mmTube:Express8mm ODthe tube

Tube8mm:indicates connection8mm ODpipe joint

The imperial system is mainly:1/4、3/8、1/2several sizes

The main ones in the metric system are:6、8、10、12mmseveral sizes

1 4 brass water nylon tube fittings

Positive:Indicates male connector(male connector)

Negative:Indicates female connector(female connector)

male or female cone refers toRTthreaded joint,which isISO 7/1standard,Yang Ping or Yin Ping mainly refers toRS、RPorRGthreaded joint,which isISO 228/1standard

NPTThe connector is not specially marked,STThe joints are used very little in the Daya Bay Nuclear Power Plant,not specifically marked

Diagram of wiring connection method

one:Straight connection of single-strand copper conductors

①First, put the two wire cores into aXshape intersect。

1 4 brass water nylon tube fittings

②twist each other2~3After the circle, straighten the two thread ends。

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

③Attach each wire end to the other core wire and wrap6lock up,Cut the remaining core wire with wire cutters,And clamp the end of the flat core wire。

1 4 brass water nylon tube fittings

two:single-strand copper conductorTglyph connection

(1 4 brass water nylon tube fittings)①Cross the end of the branch core with the trunk core,Leave it at the root of the branch core wire5mm,Then wrap clockwise6~8after the circle,Cut the remaining core wire with wire cutters,And clamp the end of the flat core wire。

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

②Small cross-section core wire can be free of knots。

1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

three:Docking of double strands

Cut the ends of the two twin-core wires into the form shown in the illustration。when connected,Connect the core wires of the same color in the two to-be-connected wire ends according to the small-section straight connection method。Connect the cores of the other color together in the same way。

1 4 brass water nylon tube fittings

Four:7Straight line connection method of strand copper core wire

①Unwind and straighten the end of the core wire with the stripped insulation first,then put it close to the insulating layer1/3The core wire of the wire segment is twisted,then put the rest2/3The core wire ends are scattered into an umbrella shape as shown in the figure,and straighten each core wire。

1 4 brass water nylon tube fittings

②Separate the ends of the two umbrella-shaped wires to fork,must be plugged in。

1 4 brass water nylon tube fittings

③Pinch all the core wires on both sides after the fork is inserted,And should straighten each core wire and make each core wire evenly spaced;At the same time, use wire pliers to tighten the fork to eliminate the gap。

1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

④First, at one end, place the adjacent two core wires at a distance from the center line of the fork.3A single core wire is folded at the diameter width,and form90°。

1 4 brass water nylon tube fittings

⑤Then wrap the two core wires tightly in a clockwise direction2after the circle,turn back again90° and lie flat on the axis before folding。

1 4 brass water nylon tube fittings

⑥Then place the adjacent2The core wire is folded into90° ,and follow the steps⑤ method processing。

1 4 brass water nylon tube fittings

⑦put the rest3Root core wire step by step⑤ method wraps up to the2lap time,put the front4The core wire is separately cut at the root,And clamp flat;then put3foot-binding3lock up,Then cut off the remainder,Clamp flat incision without burrs

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

⑧Follow the steps on the other side④~⑦method for processing。

1 4 brass water nylon tube fittings

Fives:7Stranded copper core wireTglyph connection method

①Unwind and straighten the branch cores,Then put it close to the insulating layer1/8The core wire of the wire segment is twisted,put the remainder7/8The core wire is divided into two groups,A group4root,another group3root,line up。Use a rotary chisel to pry open the core wire of the trunk wire and divide it into two groups,put it in the branch4A set of core wires is inserted into the middle of the trunk core wires,and put3A set of root cores is placed in front of the trunk core。

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

②Bundle3A set of cores is tightly wound clockwise to the right of the trunk3~4lock up,And clamp the flat end;Bundle4A set of core wires are wound counterclockwise to the left of the trunk4~5lock up。

1 4 brass water nylon tube fittings

③clamp flat end。

1 4 brass water nylon tube fittings

six:Butt joint of unequal diameter copper wire

Wrap the thin wire stub tightly around the thick wire stub5~6lock up,Bend the end of the thick wire,make it press on the wrapping layer,Rewind the thread3~4lock up,trim off the remainder,forceps flat incision。

1 4 brass water nylon tube fittings

seven:single-strand and multi-strandTword branch connection

①Insulation opening at the left end of the stranded wire3~5mmon the core,Use a screwdriver to divide the multi-strand core wire into two more even groups(Such as7core wire of strand3、4Minute)。

1 4 brass water nylon tube fittings

②Insert the single-strand core wire into the middle of the two sets of core wires of the multi-strand core wire,But the single-strand core wire cannot be inserted to the end,Insulation cuts should be kept about approx.3mmthe distance。Then use wire pliers to flatly clamp the multi-strand core wire caulking pliers。

1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

③Tightly wrap the single-strand core wire on the multi-strand core wire in a clockwise direction,The circles should be closely packed,wrap around the foot10lock up;then cut off the remainder,pliers flat incision burr。

1 4 brass water nylon tube fittings

Eight:Connection of the soft line with a single hard conductor

First screw the soft line into a single wire,Wrap it in a single wire wire7~8lock up,Finally, the single-strand hard wire is rearward.,To prevent tape。

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

Nine:Aluminum core wire pressure pipe pressure

①Before the wiring,First select a suitable pressure tube,Clear the upper surface of the wire and the oxide layer and dirt on the inside the inner,Coating from gender.

(1 4 brass water nylon tube fittings)1 4 brass water nylon tube fittings

②Insert the two threads and pass through the pressure takeover,Make each of the two-wire ends25~30mm。

1 4 brass water nylon tube fittings

③Press the press。

1 4 brass water nylon tube fittings

④If crimping steel core aluminum strand,butXXA layer of aluminum gasket should be matched between two core wires。Number of pressure pits on crimping tongs,Indoor head head is usually4indivual,Outdoor usually6indivual。

1 4 brass water nylon tube fittings(1 4 brass water nylon tube fittings)

ten:Aluminum core wire groove bolt crimping

Before connection,First use steel wire to remove the oxide layer and dirt on the inner wall of the groove in the groove of the groove in the groove.,Apply Vaseline zinc cream powder(Or neutral Vaseline),Then turn the wire card into the groove,Rotating bolt,Complete the trench clip tightly。To prevent bolts from loosen,Press the bolt should be set with spring gasket

1 4 brass water nylon tube fittings

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