The TIANYU Straight Pattern Globe Valve is a heavy-duty industrial throttling and isolation valve engineered to comply with internationally recognized industrial valve standards including API 602, ASME B16.34, ASME B16.5, ASME B16.10, alongside EU CE safety certification to satisfy global market access criteria for North America, European Union, Middle East and Southeast Asia EPC industrial construction projects. Classified as straight through globe valve with S-shaped internal flow channel, this product delivers precise linear flow modulation and reliable pipeline shutoff, outperforming gate and ball valves in continuous throttling working conditions. The unit is equipped with standard raised face flanged end connections, bolted bonnet assembly and flexible graphite stem packing system, paired with solid cast handwheel for full manual on-site operation without auxiliary power supply. All dimensional and performance indicators follow unified international sizing and testing norms to realize full interchangeability with mainstream global standard pipeline flanges, greatly simplifying on-site installation, routine disassembly overhaul and spare parts replacement work for plant maintenance teams and engineering contractors. Every finished valve undergoes full hydrostatic and air tightness testing under API 598 specification before factory delivery, passing third-party authority inspection to meet cross-border industrial procurement audit requirements.
The ASTM A216 WCB cast carbon steel valve body receives standardized normalizing heat treatment after casting, achieving minimum tensile strength of 485MPa and minimum yield strength of 240MPa, with outstanding impact resistance and structural stability under alternating temperature and pressure fluctuation working environments. This material boasts broad compatibility with steam, industrial circulating water, crude oil, natural gas and most neutral non-corrosive industrial fluids, avoiding material corrosion failure under conventional high-temperature pipeline service. The internal valve disc and seat trim adopt 13Cr alloy hard surfacing after precision CNC machining and manual lapping, forming rigid metal-to-metal sealing matching surfaces to realize bubble-tight shutoff under full Class 300LB differential pressure, without aging, swelling or permanent deformation defects existing in polymer soft sealing materials when exposed to high-temperature media. The rising F6a stainless steel stem undergoes quenching and tempering thermal processing to balance surface hardness and core toughness, resisting medium erosion and friction galling during long-period reciprocating lifting movement, effectively preventing stem jamming failure caused by rust and abrasion. The flexible graphite braided packing set forms multi-stage dynamic sealing around the stem, layered graphite fiber composite structure retains stable sealing performance under drastic temperature variation, effectively blocking fugitive medium leakage along the stem gap while allowing convenient packing adjustment without valve disassembly. Flanged raised face surfaces are machined with serrated anti-slip texture to increase gasket attaching friction force, preventing medium seepage under pipeline pressure surges. The S-shaped streamlined internal flow channel is optimized through precision casting design to control flow turbulence intensity, delivering linear flow variation characteristic that enables operators to accurately adjust pipeline flow rate through small handwheel rotation strokes, an irreplaceable advantage for process pipelines requiring precise medium flow control.
