STAUFF Heavy Series Cover Plate Type DPAD
The STAUFF Heavy Series Cover Plate Type DPAD is designed for STAUFF size groups 4S-D (4S) and 5S-D (5S). Optimised for the Heavy Series, it ensures ideal retention and secure fastening. It is available in various carbon steel finishes (uncoated, phosphated, zinc/nickel-plated) and in high-strength stainless steel (V2A AISI 304/303 and V4A AISI 316/316 Ti). It integrates perfectly with the Type SPAD Weld Plate (M10 or UNC). The available product code families, which can be combined with materials W1, W2, W3, W4 and W5, are: DPAD-4S, DPAD-5S, SPAD-4S-M, SPAD-4S-U, SPAD-5S-M, SPAD-5S-U.
The STAUFF Heavy Series Cover Plate Type DPAD is an essential component in fastening systems for hydraulic pipework, specifically developed for STAUFF Groups 4S-D (4S) and 5S-D (5S). Designed to provide maximum strength, this plate ensures correct and secure locking within the Heavy Twin Series assembly.
The component is available for two main size groups. Group 4S has an overall length (L1) of 115 mm (4.53 in) and a centre distance (L2) of 90 mm (3.54 in), with a width (B) of 30 mm (1.18 in) and a thickness (S) of 8 mm (0.31 in). The hole diameter (ØD) is 11 mm (0.43 in). Group 5S, intended for larger configurations, provides an overall length (L1) of 145 mm (5.71 in) and a centre distance (L2) of 120 mm (4.72 in), while maintaining the same width of 30 mm, thickness of 8 mm and hole diameter of 11 mm.
The STAUFF Heavy Series Cover Plate Type DPAD is available in a wide selection of materials, identified by precise codes to suit specific operating conditions. Code W1 identifies uncoated carbon steel, while W2 indicates phosphated carbon steel. Code W3 corresponds to zinc/nickel-plated carbon steel, which is the standard finish option for DPAD plates in the North American market. For environments subject to high levels of corrosion, stainless steel variants are available: W4 for V2A Stainless Steel (1.4301/1.4305, equivalent to AISI 304/303) and W5 for V4A Stainless Steel (1.4401/1.4571, equivalent to AISI 316/316 Ti).
Within the same Heavy Series, the system is combined with the Type SPAD Weld Plate, which is also compatible with Groups 4S and 5S. SPAD plates have overall lengths (L1) of 130 mm for Group 4S and 160 mm for Group 5S. The threaded components of the SPAD Series are available with ISO Metric Thread (code M, M10 specification) or Unified Coarse Thread UNC (code U, 3/8-16 UNC specification). The standard finish for SPAD weld plates in North America is W2.
The ordering system allows the exact required component to be configured. Cover plate codes use the prefix DPAD, followed by the group (4S or 5S) and the material code (W1 to W5), generating codes such as DPAD-4S-W1. Weld plates additionally include the thread specification, resulting in order codes such as SPAD-4S-M-W1.
| Feature | Value |
|---|---|
| Compatible STAUFF Groups | 4S-D (4S), 5S-D (5S) |
| Length L1 (DPAD 4S / 5S) | 115 mm / 145 mm |
| Centre Distance L2 (DPAD 4S / 5S) | 90 mm / 120 mm |
| Thickness S / Width B (DPAD) | 8 mm / 30 mm |
| Hole Diameter ØD (DPAD) | 11 mm |
| Material W1 | Carbon Steel, uncoated |
| Material W2 | Carbon Steel, phosphated (Std. SPAD North America) |
| Material W3 | Zinc/Nickel-Plated Carbon Steel (Std. DPAD North America) |
| Material W4 | V2A Stainless Steel (1.4301/1.4305 – AISI 304/303) |
| Material W5 | V4A Stainless Steel (1.4401/1.4571 – AISI 316/316 Ti) |
| Thread Options (SPAD) | ISO Metric (M10) / Unified Coarse UNC (3/8-16 UNC) |
| Model (Family) | Component | STAUFF Group | Material Variants |
|---|---|---|---|
| DPAD-4S-* | Cover Plate | 4S | W1, W2, W3, W4, W5 |
| DPAD-5S-* | Cover Plate | 5S | W1, W2, W3, W4, W5 |
| SPAD-4S-M-* | Weld Plate (M10 Thread) | 4S | W1, W2, W3, W4, W5 |
| SPAD-4S-U-* | Weld Plate (UNC Thread) | 4S | W1, W2, W3, W4, W5 |
| SPAD-5S-M-* | Weld Plate (M10 Thread) | 5S | W1, W2, W3, W4, W5 |
| SPAD-5S-U-* | Weld Plate (UNC Thread) | 5S | W1, W2, W3, W4, W5 |