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Wholesale Best Quick Disconnect Coupling Supplier – Hydraulic Fluid Power Connection Winner NPT Connectors / Adapters – Winner Fluid

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Wholesale Best Quick Disconnect Coupling Supplier – 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°）
Size	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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