Sekisui Industrial Piping Co., Ltd.

Sekisui Industrial Piping Co., Ltd. located in the Chungkang Export Processing Zone of Taichung City in Taiwan. From March of 2006, Sekisui Industrial Piping Co., Ltd. was established as a wholly-owned subsidiary of Sekisui Chemical Co., Ltd. with full technical supports and had a whole new start.

Union(US)

Sekisui Industrial Piping Co., Ltd. specializes in servicing the Union(US) needs of businesses locally and across the country. We strive to offer well-engineered, quality Union(US) that enables our customers to take their own projects from idea to reality. Our mission is to be innovative through new designs and to produce the highest quality products at an incredible value. From providing quality Union(US) to quality customer service, our team will do our best to answer questions, solve problems and assist you with your needs.
Categories > MEFCO Manual Valve > Union(US)
Union(US)

Union(US)

  • Size ½”-4”
  • Suitable for all piping systems
  • Easy to be installed
  • Socket or threaded end
  • Color: White / Gray


Features :

MEFCO Union (US) is suitable for all piping system and easy to be installed when customer need the function of repair. Available dimension begins from 1/2 to 4 inches (15 – 100mm). We offer several choices in socket (ASTM, DIN and JIS) and thread (NPT, Rp and Rc) standard, just pick up the color you prefer by White / Grey then construct your piping system or replace accessories.

Specification :

Working pressure:150psi@73.4°F(23°C)

NO PART NAME Q'ty MATERAL
1 BODY 1 PVC
2 UNION NUT 1 PVC
3 UNION END 1 PVC
4 O-RING 1 EPDM




Socket Type
Size L Ød ØDu ANSI DIN JIS l
A B Ød1 Ød2 Ød1 Ød2 Ød1 Ød2
15  1/2 55 15 53 21.54 21.23 20.3 20.1 22.4 21.52 22.5
20  3/4 64 20 61 26.87 26.57 25.3 25.1 26.45 25.42 26
25 1 72 25 71 33.67 33.27 32.3 32.1 32.55 31.37 30
32 1 1/4 77 32 83 42.42 42.04 40.3 40.1 38.6 37.31 32
40 1 1/2 86 40 96 48.56 48.11 50.3 50.1 48.7 47.21 36
50 2 95 50 116 60.63 60.17 63.3 63.1 60.8 59.1 40
65 2 1/2 111 65 150 73.38 72.85 75.3 75.1 76.6 75.33 45
80 3 122 76 166 89.31 88.7 90.3 90.1 89.6 88.29 48
100 4 148 100 210 114.76 114.07 110.4 110.1 114.7 113.2 58


Thread Type
Size L Ød ØDu NPT Rp Rc
A B thd./in l(min) thd./in l(min) thd./in l(min)
15  1/2 55 15 53 14 16.5 14 15 14 13
20  3/4 64 20 61 14 17 14 16.5 14 15
25 1 72 25 71 11.5 21 11 19 11 17
32 1 1/4 77 32 83 11.5 22 11 22 11 19
40 1 1/2 86 40 96 11.5 22 11 22 11 19
50 2 95 50 116 11.5 23 11 26 11 23
65 2 1/2 111 65 150 8 31 11 31 11 27
80 3 122 76 166 8 33 11 34 11 30
100 4 148 100 210 8 35 11 40 11 36

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As a professional Union(US) manufacturer, Sekisui Industrial Piping Co., Ltd. has an excellent advantage over the competition, developing strong designs at very competitive prices but maintaining extremely high quality. Customer service is another commitment we take seriously, our proven reputation and record of quality support won't leave you stranded. Sekisui Industrial Piping Co., Ltd. is the global leader in the design and manufacturing of high-performance Union(US). Over the years we have served our clients with dedication and honesty. We adopt ethical business policies and transparent dealings in our business.