“While a maintenance worker was walking through a biotech production area, his pants leg brushed the joint clamp on a steam line. The clamp’s wing nut, which had backed-off just two turns due to temperature cycling and vibration, pulled the swing bolt through the clamp which resulted in total joint failure. The sudden release of high-pressure steam severely injured the worker and disrupted production for hours.”
This scenario not only could happen, but continues to happen, and frequently enough that the need for an improved, failure-resistant clamp became obvious within the industry. That need has been met by Advanced Couplings Ltd. The CE compliant design makes it impossible for the swing bolt to release unless the wing nut is significantly loosened, as many as ten turns rather than as few as 1-1/2 turns in the conventional design.
While protection from high-temperature/ high-pressure steam line joint failure was the primary application for these clamps, they also provide protection in systems employing various chemical components, reagents and biological materials. In these applications they not only respond to the need for improved plant safety, they help prevent contamination of the production area and adjacent equipment, and eliminate product loss. Also, they may be seen as a positive factor by your liability insurance carrier.
SH safety clamp 316 / 1.4408 stainless steel, made for safety critical applications. Corrosion resistant, high quality surface finish (for cleanability).
Clamp Size Specifications
| Part Number | Name | SKU | Nominal Size (in) |
Flange Ø (mm) |
Radius B (mm) |
Length C (mm) |
Width W (mm) |
Mass (kg) |
MAWP Barg (150°C) |
Max Test Pressure (Barg) |
|---|---|---|---|---|---|---|---|---|---|---|
| SHSF0002506 | Tri-Clamp (1/2"–3/4") | Type SH Safety | 316SS | Wingnut | CL.SAF.0050 | 1⁄2 – 3⁄4 | 25 | 63 | 75 | 17 | 0.15 | 50 | 100 |
| SHSF0005006 | Tri-Clamp (1"–1 1/2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0100 | 1 – 1 1⁄2 | 50.5 | 77 | 102 | 17 | 0.25 | 50 | 100 |
| SHSF0006406 | Tri-Clamp (2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0200 | 2 | 64 | 93 | 123 | 17 | 0.33 | 50 | 100 |
| SHSF0007706 | Tri-Clamp (2 1/2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0250 | 2 1⁄2 | 77.5 | 100 | 140 | 17 | 0.38 | 50 | 100 |
| SHSF0009106 | Tri-Clamp (3") | Type SH Safety | 316SS | Wingnut | CL.SAF.0300 | 3 | 91 | 105 | 150 | 17 | 0.44 | 40 | 80 |
| SHSF0010606 | Tri-Clamp (3 1/2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0350 | 3 1⁄2 | 106 | 110 | 165 | 17 | 0.44 | 40 | 80 |
| SHSF0011906 | Tri-Clamp (4") | Type SH Safety | 316SS | Wingnut | CL.SAF.0400 | 4 | 119 | 119 | 185 | 17 | 0.57 | 35 | 70 |
| SHSF0013006 | Tri-Clamp (4 1/2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0450 | 4 1⁄2 | 130 | 119 | 191 | 17 | 0.60 | 30 | 60 |
| SHSF0014406 | Tri-Clamp (5") | Type SH Safety | 316SS | Wingnut | CL.SAF.0500 | 5 | 144 | 131 | 215 | 19 | 0.75 | 30 | 60 |
| SHSF0015506 | Tri-Clamp (5 1/2") | Type SH Safety | 316SS | Wingnut | CL.SAF.0550 | 5 1⁄2 | 155 | 148 | 265 | 24 | 1.47 | 30 | 60 |
| SHSF0016706 | Tri-Clamp (6") | Type SH Safety | 316SS | Wingnut | CL.SAF.0600 | 6 | 167 | 152 | 277 | 24 | 1.67 | 30 | 60 |
| SHSF0018306 | Tri-Clamp (6 5/8") | Type SH Safety | 316SS | Wingnut | CL.SAF.0658 | 6 5⁄8 | 183 | 164 | 297 | 24 | 1.69 | 25 | 50 |
| SHSF0021706 | Tri-Clamp (8") | Type SH Safety | 316SS | Wingnut | CL.SAF.0800 | 8 | 217 | 184 | 332 | 24 | 2.19 | 20 | 40 |
| SHSF0023306 | Tri-Clamp (8 5/8") | Type SH Safety | 316SS | Wingnut | CL.SAF.0858 | 8 5⁄8 | 233 | 185 | 333 | 24 | 2.34 | 20 | 40 |
| SHSF0026806 | Tri-Clamp (10") | Type SH Safety | 316SS | Wingnut | CL.SAF.1000 | 10 | 268 | 205 | 382 | 24 | 2.78 | 16 | 32 |
| SHSF0028606 | Tri-Clamp (10 5/8") | Type SH Safety | 316SS | Wingnut | CL.SAF.1058 | 10 5⁄8 | 286 | 213 | 405 | 24 | 2.97 | 16 | 32 |
| SHSF0031906 | Tri-Clamp (12") | Type SH Safety | 316SS | Wingnut | CL.SAF.1200 | 12 | 319 | 242 | 458 | 24 | 3.69 | 10 | 20 |
| SHSF0033806 | Tri-Clamp (12 5/8") | Type SH Safety | 316SS | Wingnut | CL.SAF.1258 | 12 5⁄8 | 338 | 243 | 463 | 24 | 3.37 | 10 | 20 |
Standard Descriptions
| Standard | Description |
|---|---|
| ASME SA351 / 351 M | Clamp segments – CF8M (Cast 316) |
| ASME SA580 / 580 M | Eyebolts – Hot forged – 316 |
| ASME SA580 / 580 M | Cold forged rivets (316) |
| ASME SA351 / 351 M | Wingnuts – CF8M (Cast 316) |
| ASME SA240 / 240 M | Hinge plates – 316 |
| ASME SA479 / 479 M | Hex nuts – 316 |
ACL prides itself as being the benchmark within the hygienic industry for sanitary clamps. In order to stay ahead of the curve, the designs and standards the clamps are produced to, are under constant review.
Clamp Segment Production Standard
- Investment cast using ASME SA 351 / 351 M Stainless Steels for pressure purposes
- Pickled and passivated — removes free iron particles from the surface that would rust
- Heat treated according to ASME SA 351 / 351 M
- Barrel polished and sized using hydraulic press — ensures uniformity between clamps, uniform gasket extrusion in a union, and reduces re-torquing after pressure/temperature cycles
Quality Control
- Pressure tested by three independent bodies: Forbairt, TUV SUD and FORCE Denmark — also tested in-house as part of ongoing improvement
- XRF (X-Ray Fluorescence) and PMI (Positive Material Identification) verify correct chemical composition
- Castings visually checked for cracks and blowholes per ASME SA351/351M
- Quality control, research and testing constantly evolving to maintain the highest standard
- ASME SA 580 / A580 M eyebolt threads controlled at three locations to ensure correct tolerance and minimise galling risk
- ASME SA 580 / A580 M rivets checked to ensure mechanical properties are within manufacturing limits
Documentation & Traceability
- 3.1 certificate issued — heat number stamped on casting at the foundry
- Castings stamped with the pour date at the foundry
- The 4/5 digit number is unique to the size and style of the clamp
