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Products Style S

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Product Line: PIEDMONT
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Type: SUPER DUPLEX
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APPLICATION

Applications can impose severe-duty factors in addition to the maximum continuous operating pressure rating. These additional design requirements must be considered in selecting the appropriate Piedmont coupling.

ASSETS

Style S couplings incorporate the more noble, duplex-alloy construction, which although initially more expensive, offers the superior corrosion resistance and corresponding better longevity for highly corrosive environments compared to the Style B coupling which is constructed from 316 alloy. Consult Piedmont application engineering for guidance on the selection of metal alloy for your application.

FEATURES

Pressure Rating

Pressure Rating: 1500 psi (103 bar) with schedule 40s pipe (special alloys) with cut groove only – all sizes.

Components

  • Housing
    • 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.
  • 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 for drinking water system components.  Not suitable for petroleum service.*EPDM peroxide cured gaskets available upon request (for special applications such us chloramines, etc…)
  • Bolts/Nuts
    • Round / hexagonal head, oval neck, 316 stainless steel bolts dimensional specifications conforming to ASME B18.5 – 2012. For couplings sizes from ¾’’ to 3’’, use heavy hex type 651 silicon bronze nuts, for couplings of 4’’ and up use 316 stainless steel nuts. Washers are heavy pattern 316 stainless steel.

*For the use of Style SS couplings on cyclic axial displacement systems, please consult with Piedmont for design and installation guidance.

TABLE OF SPECIFICATION

Style S Specifications

     
Nominal sizeXYZAprx WeightPressure rating*
Inchesinches
mm.
inches
mm.
inches
mm.
lbs
kgs
PSI
BAR
0.752.00
50.8
3.20
81.3
1.71
43.4
1.10
0.50
1500
103
1.02.40
60.9
3.50
88.8
1.68
42.7
1.16
0.53
1500
103
1.252.72
69.1
3.74
95
1.71
43.4
1.53
0.69
1500
103
1.53.04
77.0
4.17
105.9
1.71
43.4
1.60
0.72
1500
103
2.03.50
88.9
4.81
122.1
1.79
45.5
2.53
1.15
1500
103
2.53.92
99.3
5.38
136.5
1.85
47.0
3.15
1.43
1500
103
3.04.70
119.4
6.23
158.0
1.85
47.0
3.80
1.72
1500
103
4.05.90
149.7
7.40
187.9
2.02
51.3
5.86
2.66
1500
103

*Pressure rating when cut grooves and sch 40 pipes are used.

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.

NOTE: For the use of Style S couplings on cyclic axial displacement systems, please consult with ATS Water technology for design and installation guidance

 

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