Large Range Couplings

Category:

Description

Large Range Couplings

SPECIFICATIONS
Material:
BODY: Ductile iron grade 500-7/ 450-10 in accordance with ISO 1083 or 70-50-05/65-45-12 with ASTM A536

GLAND: Ductile iron grade 500-7/ 450-10 in accordance with ISO 1083 or 70-50-05/65-45-12 with ASTM A536

GASKET: Rubber E.P.D.M./SBR/NR in accordance with EN 681.1

D-BOLTS AND NUTS: Carbon steel grade 8.8 with dacromet coating

Working Pressure:
16/25 Bar or 250/350 PSI
Fluid Temperature:
0°C-50°C, excluding frost
Allowed Angular Deflection:
Joint Gap:
20mm
Coating:
External coatings Internall coatings

liquid epoxy resin painting
epoxy applied by FBE
according to customers’ requirements

liquid epoxy resin painting
epoxy applied by FBE
according to customers’ requirements

Reference Rules:
Designed and tested in accordance with EN 14525, ANSI/AWWA C219 and EN 545
Use:
Large Range Couplings, designed by our own company in 2007 and applied the patent, with superwide range tolerance on O.D. (up to 43mm), are suitable for jointing plain-ended pipes with same or different materials and same or different outside diameters within the pipe O.D. ranges, and can replace the stepped couplings within the ranges.

The circumferentially ribbed, specially profiled gaskets in the high quality material, provide for smooth installation by minimizing contact friction and restrict to pull out.

The gasket also provide a leak tight seal across the O.D. range per nominal size and still allow for thermal expansion and contraction of the pipe up to 5mm per gasket, facilitated through gasket deformation.

The further more reasonable sizes and ranges can allow the pipes of main sizes in the most reasonable location (up to 5mm per gasket), and the gasket can be at the perfect situation after assembled.

Note: The accessories for Large Range Couplings are usually supplied by assembled on the body .