Wholesale Best Medium Pressure Quick Coupling Manufacturers – Hydraulic Fluid Power Connection Winner NPT Connectors / Adapters – Winner Fluid


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Wholesale Best Medium Pressure Quick Coupling Manufacturers – Hydraulic Fluid Power Connection Winner NPT Connectors / Adapters – Winner Fluid Detail:

Product Introduction

Winner brand NPT connectors at least has NPT thread male or female connect end in the connector, NPT is American National pipe tapered thread, also known as ANSI/ASME B1.20.2M pipe threads.

The NPT thread has below characteristics:

1.The truncation of roots and crests of thread are flat

2.60°thread angle

3.The angle between taper and center axis of pipe thread is 1°47’24”

4.Thread pitch measured per inch.

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Because the NPT thread truncation of roots and crests of thread are flat, it is different with NPTF, so a PTFE sealant tape must be used to ensure a leak-free seal, then give an effective seal for connectors using hydraulic fluids.

NPT thread sizes for Winner connectors include: 1/8”-27, 1/4”-18, 3/8”-18, 1/2”-14, 3/4”-14, 1”-11.5, 1.1/4”-11.5, 1.1/2”-11.5, 2”-11.5.

How to identify it is a NPT thread and determine the thread size?

1.Visual inspection the thread and it is taper, or use a caliper measure the out diameter of external thread or the minor diameter of internal thread in different length position and found the diameter is different and meet 1:16 taper, or directly use a 1:16 cone gauge.

2.Use a caliper measure the diameter of base line position. Measure the thread diameter with an ID/OD caliper, external thread diameter is measured on the out diameter, and holding the caliper at a slight angle for a more accurate reading, for internal thread is measured on the internal diameter, and holding it perpendicular to the thread for a more accurate female reading.

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3.Measure the threads per inch (TPI) or the pitch. As the measured diameter and use relational pitch gauge, try different thread gauges until determine the tightest fit, engage as many threads as possible, there are more thread engaged, the more accurate the reading. Hold the fitting/connector and thread pitch gauge up to the light, looking for gaps between the gauge and thread, this is easier to see on a external thread fitting/connector than a internal thread fitting/connector. Or directly measure the distance of two threads crest

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because more than one size can have similar thread dimensions. Below is the data compare between NPT thread vs BSPT thread, it is similar, so need careful not mix or mistaken.

Size

NPT thread (60°)

BSPT thread(55°)

thread

base O.D.

base
length

threads
per inch

thread

base O.D.

base
length

threads
per inch

-2

Z1/8″x27

10.242

4.102

27

R1/8″x28

9.728

4

28

-4

Z1/4″x18

13.616

5.785

18

R1/4″x19

13.157

6

19

-6

Z3/8″x18

17.055

6.096

18

R3/8″x19

16.662

6.4

19

-8

Z1/2″x14

21.224

8.128

14

R1/2″x14

20.955

8.2

14

-12

Z3/4″x14

26.569

8.618

14

R3/4″x14

26.441

9.5

14

-16

Z1″x11.5

33.228

10.16

11.5

R1″x11

33.249

10.4

11

-20

Z1.1/4″x11.5

41.985

10.668

11.5

R1.1/4″x11

41.91

12.7

11

-24

Z1.1/2″x11.5

48.054

10.668

11.5

R1.1/2″x11

47.803

12.7

11

-32

Z2″x11.5

60.092

11.065

11.5

R2″x11

59.614

15.9

11

The normal Winner plating of connectors are free of Cr6+, and the corrosion protection performance reached 360h no red rust, it exceeds normal standard.


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  • This enterprise in the industry is strong and competitive, advancing with the times and develop sustainable, we are very pleased to have a opportunity to cooperate!
    5 Stars By Frederica from Macedonia - 2017.08.15 12:36
    A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
    5 Stars By Daniel Coppin from Chile - 2018.06.28 19:27