PRODUCTS
STYLE H
Application
Ideal for ultra-high-pressure RO systems, HPB Energy Recovery turbochargers, high pressure sides of ERD (Energy Recovery Devices), ZLD (Zero liquid discharge) systems.
Housing
Duplex or Superduplex stainless steel type CE8MN (UNS # J93345) conform to ASTM A995, Grade 2A requirements. Piedmont also offers this coupling in superduplex type CE3MN (UNS # J93404) conform to ASTM A995, Grade 5A requirements for higher resistance to corrosion. Other alloys are also available; contact Piedmont for details.
Features
Pressure Rating
2000 psi (137.9 bar) for all sizes1.
Gaskets
- EPDM rubber, suitable for hot and cold water services. Two shapes of gaskets are available: C-shaped or Flush-fit.
- NSF/ANSI 61 approved or equivalent (FDA) for drinking water system components. Not suitable for petroleum service.
Other materials are also available; contact Piedmont for details.
Hardware (Bolts/Nuts/Washers)
Hardware components are iso metric thread type:
- Bolts are round-head oval neck track bolts (own design)
- Nuts are according to DIN-934 (ISO-4032).
- Washers are according to DIN-125-1 (ISO 7089).
Hardware material (specify material choice):
- SS Duplex 2205 / S32205 as per ASTM A1082 (PREN>35)
- SS Super duplex 2507 / S32750 as per ASTM A1082 (PREN>40)
- 316 Stainless Steel as per ASTM A276 (PREN>23)
- Optional: silicon bronze nuts (heavy hex type 651).
*For the use of Style H couplings on cyclic axial displacement systems, please consult with Piedmont for design and installation guidance.
*Hexagonal head bolts (DIN-931/ ISO-4014), instead of oval neck bolts, may be used upon Piedmont approval.
*Silicon bronze nuts, when coupled to SS bolts, avoid the use of any additional antigalling paste.
TABLE OF SPECIFICATION
| Style H Specifications | ||||||
|---|---|---|---|---|---|---|
| Nominal size | X | Y | Z | Aprx Weight | Pressure rating* | Bolt/Nut |
| Inches / DN (mm) | inches mm. | inches mm. | inches mm. | lbs kgs | PSI BAR | Qty. – Size mm. |
| 1.0 / DN25 | 1.315 33.40 | 2.40 60.9 | 1.68 42.7 | 0.97 0.44 | 2000 137.9 | 2 – M12 x 65 |
| 1.5 / DN40 | 1.900 48.26 | 2.94 74.6 | 1.71 43.4 | 1.21 0.55 | 2000 137.9 | 2 – M12 x 65 |
| 2.0 / DN50 | 2.375 60.33 | 3.50 88.9 | 1.78 45.2 | 1.92 0.87 | 2000 137.9 | 2 – M16 x 65 |
| 2.5 / DN65 | 2.875 73.03 | 4.04 102.6 | 1.85 47.0 | 2.40 1.09 | 2000 137.9 | 2 – M16 x 65 |
| 3.0 / DN80 | 3.500 88.90 | 4.84 123.1 | 1.85 47.0 | 2.64 1.20 | 2000 137.9 | 2 – M20 x 85 |
| 4.0 / DN100 | 4.500 114.30 | 6.00 152.4 | 2.02 51.3 | 4.54 2.06 | 2000 137.9 | 2 – M20 x 85 |
Note : It is allowed a single hydrostatic proof test at 1.5 x rating pressure before being put in operation at its rated pressure or less.
Images
Quote request
Piedmont couplings are sold as a whole including the housing, the gasket, the bolts, nuts and washers when necessary. Please specify the coupling size and gasket type required.
Documents
Product Sheet – Style H
