| Specification | Typical Value | | :--- | :--- | | | DN15 to DN300 (1/2" to 12") | | Pressure Rating | PN16, PN25, PN40 (up to Class 150 or Class 300 equivalent) | | Connection Type | Flanged ends according to EN 1092-1 (or ANSI B16.5) | | Valve Type | 2-piece floating ball valve (occasionally 3-piece for easy maintenance) | | Body Material | Carbon Steel (ASTM A216 WCB) or Stainless Steel (CF8M/1.4408) | | Ball Material | Stainless Steel (AISI 304 or AISI 316) – the "S" in "SM" | | Stem Material | Stainless Steel (AISI 316) with anti-static device | | Seat Material | PTFE + 15% Glass Fiber (standard) or PEEK / Deform (for high temp) | | Seal Type | Soft or Metal-tometal primary with secondary metal backup (Fire-safe) | | Temperature Range | -20°C to +220°C (PTFE); up to +350°C (PEEK/Metal-seated variants) | | Operation | Lever handle (DN15-50), gear operator (DN65-300), or actuator-ready | | Standards Compliance | ISO 5211 mounting pad, API 607 / ISO 10497 fire-safe, TA-Luft (low emissions) |
Failure to install a required shed or installing one that does not meet the standards (if filed as such) can lead to severe consequences. The NYC Department of Buildings issues violations through the OATH/Environmental Control Board , which can result in significant fines, civil penalties, and mandatory court appearances. Sidewalk Sheds | NYC.gov bsa 351-74-sm
While the minimum width is 5 feet, the shed must be wide enough for safe pedestrian passage. For buildings over 100 feet tall, the shed must typically extend 20 feet beyond the building's edge. | Specification | Typical Value | | :---
Under NYC Department of Buildings (DOB) rules, a sidewalk shed filing typically requires an architect or engineer. However, if a shed is based on the design: Unlicensed Applicants : Can file for the permit themselves. For buildings over 100 feet tall, the shed
Whether you are designing a new chemical skid, retrofitting a steam line, or sourcing a replacement for a failed valve, understanding the nuances of the -74-SM configuration ensures you select the correct component for long-term, hazard-free operation.
In the pantheon of classic British motorcycles, few names evoke as much passion, nostalgia, and mechanical romance as BSA. The Birmingham Small Arms Company produced machines that defined an era, from the workhorse Bantam to the thunderous Rocket 3. However, among discerning collectors and vintage racing enthusiasts, a specific model designation frequently sparks intense debate and desire: the .