EIGHTNIPPLE B Fittings

Product catalog summary

Product Overview

The document details the EIGHTNIPPLE B series of barb fittings (Model Number: E-FTB-(I.D.)) manufactured by HAKKO Corporation. These fittings are made of brass and designed for use with pressure-proof hoses in various industrial applications such as machine tools, molding machines, chemical plants, and handling waste fluids and organic solvents.

Contact and Company Information

Head Office: Unity Forum 5F, 42-18, 1-Chome, Itabashi, Tokyo, Japan
Osaka Sales Office: Akatsuki Building 7F, 13-45, Toyotsu-cho, Suita-shi, Osaka, Japan
Website: https://hakko-eightron.com/
Email: [email protected]

Specifications and Dimensions

The fittings come in various sizes with hose inner diameters (I.D.) ranging from 6 mm to 50 mm. Key dimensions include thread size, hex size, and barb dimensions, tailored to fit specific hose sizes. The fittings are RoHS2 compliant, ensuring low cadmium content.

Model Number	Hose I.D. (mm)	Thread	Weight (g)
E-FTB-6	6	R 1/4	19
E-FTB-8	8	R 1/4	20
E-FTB-9	9	R 3/8	29
E-FTB-10	10	R 3/8	30
E-FTB-12	12	R 1/2	60
E-FTB-15	15	R 1/2	69
E-FTB-19	19	R 3/4	132
E-FTB-25	25	R 1	255
E-FTB-32	32	R 1 1/4	340
E-FTB-38	38	R 1 1/2	396
E-FTB-50	50	R 2	696

Material and Compliance

The fittings are made of brass, suitable for pressure-proof hoses, and comply with RoHS2 standards, ensuring environmental safety by limiting cadmium content.

Design Features and Advantages

The nipple parts are longer than conventional fittings, allowing secure tightening with two hose clamps.
This design firmly tightens reinforced yarns in hoses, extending hose lifespan by reducing yarn cast-off bursting.
Compared to conventional barb fittings, EIGHTNIPPLE fittings offer superior pressure resistance at higher temperatures.
The fittings maximize hose performance under high temperature and pressure conditions by preventing hose swelling.

Technical Insights on Hose Reinforcement

The fittings' straight section allows two flat bands (hose clamps) to press reinforced yarns over a larger surface area, reducing yarn slippage and bursting risk. Conventional fittings press yarns at a single point, which is less effective.

Benefits of Firmly Tightening Reinforced Yarns:

Extended hose lifetime by preventing yarn cast-off bursting.
Reduced hose swelling under high temperature and pressure.
Optimized hose working pressure and temperature performance.

Performance Data

Burst pressure tests conducted at 60°C using JIS K6330-2 standard show that EIGHTNIPPLE fittings maintain higher burst pressures compared to market alternatives. The fittings are tested with two hose clamps to ensure secure fastening.

Compatibility

The EIGHTNIPPLE B fittings are compatible with a wide range of hoses, including pressure hoses, oil-proof hoses, spring hoses, and various fluorine resin yarn reinforced hoses. Specific hose models compatible with each fitting size are listed, ensuring proper application.

Usage Recommendations

Users are advised to consult the "Precautions for Use" document available on the HAKKO website and product catalog to ensure safe and optimal use of the fittings.

Additional Notes

The brochure is subject to change without prior notice. For inquiries, contact HAKKO Corporation through the provided contact details.

Catalog excerpts

EIGHTRON URL https://hakko-eightron.com/ CORPORATION HAKKO Original Barb Fittings Is Applications • Fittings for Machine Tools-Molding Machines-Plant Equipment • Manufacturing Equipment of Chemicals, Waste Oil, Waste Fluids, and Organic Solvents Specification Material: Brass. Model Number Characteristics and Functions • Original Fittings for HAKKO Hose Series • The amount of cadmium complies with the RoHS2. • Nipple parts are longer than the conventional ones, so they can be tightened securely with two hose clamps. By tightening reinforced yarns, the lifespan of the hose becomes longer. • Compared with conventional barb fittings, EIGHTNIPPLE is superior in pressureproof in higher temperature. Head Office Unity Forum 5F, 42-18, 1-Chome, Itabashi, Itabashi-Ku, Tokyo 173-0004, Japan TEL (81) 3-3963-5381 FAX (81) 3-3961-4400 Osaka Sales Office Akatsuki Building 7F, 13-45, Toyotsu-cho, Suita-shi, Osaka 564-0051, Japan TEL (81) 6-6310-6880 FAX (81) 3-3961-4400 E-mail [email protected] URL https://hakko-eightron.com/

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Technical Data ◆補強糸がしっかり押さえられるエイトニップルのメカニズム ★ What are the advantages of tightening reinforced yarns ﬁrmly? ・ The lifetime of hose will be extended, since it is less likely to have a yarn cast-oﬀ bursting. ・ Under the conditions of high temperature or/and high pressure, hose is less likely to be swollen. ・ Performances of hose (such as working pressure and working temperature) are maximized. ※ A yarn cast-oﬀ bursting occurs when the pressure to tighten the reinforced yarns is lower than the pressure to swell the hose, due to the inner pressure. As a result, the reinforced yarns are slided from...

Open the catalog to page 2