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d.o.t brass push-to-connect tube fitting

author:MF manufacturerstime:2022-03-17 08:33:56

d.o.t brass push-to-connect tube fitting

Instrument connector

(d.o.t brass push-to-connect tube fitting)

Gauge connectors include gauge connectors for all gauges、Instrument pipe joints、Instrument valve connector、Instrument source part connector、Instrument electrical connector、Metal hose fittings, etc.。it has a wide variety,Specifications vary,Each gauge connector has its own function。

d.o.t brass push-to-connect tube fitting

1、The structure of the pipe joint:

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


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

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

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

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


d.o.t brass push-to-connect tube fitting

2、Quick connector installation and removal steps

installation steps

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

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。

(d.o.t brass push-to-connect tube fitting)

Disassembly steps

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

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。

(d.o.t brass push-to-connect tube fitting)

3、Installation of new pipe joints

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

d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

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

d.o.t brass push-to-connect tube fitting

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

d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

4、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。

(d.o.t brass push-to-connect tube fitting)The change of the tube can be seen in the figure:


d.o.t brass push-to-connect tube fitting

5、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) 。

d.o.t brass push-to-connect tube fitting

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


d.o.t brass push-to-connect tube fitting

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

(d.o.t brass push-to-connect tube fitting)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。

d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

6、Sealing of pipe joints

There are two ways to seal the pipe joint:

(d.o.t brass push-to-connect tube fitting)1.Sealing of raw tapes:

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
(d.o.t brass push-to-connect tube fitting)

d.o.t brass push-to-connect tube fitting

2.sealant seal

(d.o.t brass push-to-connect tube fitting)Note the following points:

  • Clean connector threads before applying sealant
  • Coat the second and third turns of the thread with sealant。(360°)
d.o.t brass push-to-connect tube fitting

7、The material of the pipe joint

Stainless steel:SS

brass:B

carbon steel:S

(d.o.t brass push-to-connect tube fitting)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。


8、Types of Fittings

An example of a name label:

1/4Tube:Express1/4inchODthe tube

Tube1/4:indicates connection1/4inchODpipe joint

8mmTube:Express8mm ODthe tube

(d.o.t brass push-to-connect tube fitting)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

d.o.t brass push-to-connect tube fitting

Positive:Alar(Public connector)

Negative:Aid(Parent joint)

The cay cone or the cone refers toRTThreaded connector,which isISO 7/1standard,Yangping or the glory mainly refers toRS、RPorRGThreaded connector,which isISO 228/1standard

NPTThe joint is not specifically marked,STThe joint is very small in the Dashi Bay nuclear power plant.,There is no special labeling


Wire connector,Connection diagram

(d.o.t brass push-to-connect tube fitting)1、Linear connection of single copper core wires

①First lead the two wire core wireXShape intersection。

d.o.t brass push-to-connect tube fitting


②Mutually strand2~3Two tiers after the circle。

d.o.t brass push-to-connect tube fitting


③Put each thread in another core line closely6lock up,Cut the remaining core wire with a steel wire,And clamp the end of the core。

d.o.t brass push-to-connect tube fitting

2、Single strain copper core wireTGlyph connection

①Interaction with the head of the branch core wire with the trunk core line,Leave out at the roots of the branch core5mm,Then wrap clockwise clockwise6~8Lap,Cut the remaining core wire with a steel wire,And clamp the end of the core。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

②Small cross-section core wire can not be knotted。

d.o.t brass push-to-connect tube fitting

3、Double-stranded docking

Two two-core wire leads into the form in the figure。Connection,Connect the core wires of the two colors to be connected to the small cross-sectional line connection。Connect the core wire of another color with the same method。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

4、7Linear connection method of copper core wire

(d.o.t brass push-to-connect tube fitting)①First, the core of the insulating layer is removed and straightened.,Close to the insulating layer1/3The core wire of the line is twisted,Then put the rest2/3The core head is dispersed as an umbrella,And straighten each core。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

②Take the two umbrella bone line to the fork,Must be relatively plugged in。


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

③All core wires on both sides of the finished foundation,And should be treated with a straight wire and uniform interval for each core wire;At the same time, the gap is eliminated with the steel wire clamp.。

d.o.t brass push-to-connect tube fitting

④First put the neighboring core wire in the center of the fortrikifold3Root single-shade core wire diameter width,Formation90°。

d.o.t brass push-to-connect tube fitting

⑤Then, the two core wires are tight in the clockwise direction.2Lap,Fold back90° And squatting in the axial position before folding。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

⑥Then take the front adjacent2The root core is folded into90° ,Press and step⑤ Method processing。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

⑦Put the rest3The root core line according to steps⑤ Method is entangled2Circle,Put forward4The root core is cut in the root,Pliers;Then3Root line3lock up,Then remove the rest of the rest,Packed flat incision without burr

d.o.t brass push-to-connect tube fitting

⑧On the other side④~⑦Method for processing。

d.o.t brass push-to-connect tube fitting

5、7Copper coreTGlyph connection method

①Dispenon the branch core and straighten,Top the insulating layer1/8The core wire of the line is twisted,Put the remainder7/8The core wire is divided into two groups,A group4root,Another group3root,Row。Use the core wire of the trunk to divide the core wire,Again4A set of insertion of the root core line in the middle of the trunk core,But3A group of root core lines in front of the trunk core wire。


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

②Bundle3A group of root core is tightly wound in the right side of the trunk3~4lock up,And clamp;Bundle4A set of root core is entangled in counterclockwise on the left side of the trunk4~5lock up。


d.o.t brass push-to-connect tube fitting

③Clamping。


d.o.t brass push-to-connect tube fitting

6、Docking of inequal diameter copper wires

Tighten the thread heads in the thick wire wire5~6lock up,Bending thick line end,Make it on the winding layer,Wrap the thin wire3~4lock up,Handle,Pitcher。


d.o.t brass push-to-connect tube fitting

7、Single strand line with multiple strandsTWord branch connection

(d.o.t brass push-to-connect tube fitting)①Left end insulating layer from multi-strand3~5mmCore wire,Use a screwdriver to divide the multi-shares into a more uniform group(Such as7Core core wire3、4Minute)。


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

②Insert a single core wire into the middle of the two-group core lines of the core wire,But single-strand core wire is not inserted,The insulating layer should be removed from the multi-strand core wire.3mmthe distance。Then use the steel wire pliers to clamp the plug of the plurality of core wires.。


d.o.t brass push-to-connect tube fitting

③Put the single-strand core wire in a clockwise direction,Circle should be close to each other,Contrary10lock up;Then cut the rest of the rest,Pyroscope。


d.o.t brass push-to-connect tube fitting

8、Connection between the soft line and the single-strand hard wire

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。

(d.o.t brass push-to-connect tube fitting)d.o.t brass push-to-connect tube fitting

9、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。


d.o.t brass push-to-connect tube fitting

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


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

③Press the press。


d.o.t brass push-to-connect tube fitting

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。


d.o.t brass push-to-connect tube fitting(d.o.t brass push-to-connect tube fitting)

10、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。


d.o.t brass push-to-connect tube fitting


(Circle cards have been added here,Please see the headline client today)
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