Valve Selection Matrix

Valve Type Pressure Class Temp Range (°C) Cv Range Leakage Class Primary Media
Ball (Floating/Trunnion) ANSI 150-2500 -196 to +650 10-50000 VI (bubble tight) Hydrocarbons, slurries
Gate (Wedge/Parallel) ANSI 150-2500 -29 to +425 Full port VI Water, steam, oil
Globe (Angle/Piston) ANSI 150-600 -29 to +550 5-10000 IV-VI Steam, corrosive fluids
Butterfly (Eccentric) ANSI 150-900 -50 to +450 100-200000 III-VI Air, water, slurries
Check (Swing/Tilt) ANSI 150-2500 -196 to +800 N/A II Any unidirectional flow

Process Application Specifications

Ball Valves - API 6D / ISO 17292

Trunnion Mounted: Cv > 10000, Fire Safe API 607, fugitive emissions ISO 15848. Primary: LNG terminals, FPSO, gas transmission (Class 600-2500). Materials: LF2/Inconel 625 seats for H2S service [web:6].

Gate Valves - API 600 / BS 1868

Pressure Seal: 900-4500# steam service, backseat design for repacking under pressure. Through conduit for pigging operations in multiphase flowlines. WCB/WCC + stellite hardfacing [web:6].

Globe Valves - ASME B16.34

Multi-stage Pressure Reducing: 12-40 port cage trim, noise attenuation <85 dBA. Steam conditioning, bypass stations. 316SS/17-4PH trim for erosive service [web:6].

Global Supply Chain - OEM Specifications

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Sealwell Systems Pvt Ltd
In-line sampling valves SS316L/Hastelloy C22/276 for ANFD, RCVD, Sigma Mixers. FDA compliant FKM/FFKM seals. ASME BPE sanitary design for pharma/batch processing [attached_file:1].
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Emerson - Fisher
ET/D/EW series control valves, Cavitrol V trim. HART/FF protocols. NACE MR0175 sour service certification [web:19].
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Flowserve - Durco
Mark One plug valves, David-Nelson split body. Alloy 20/Hastelloy C for HF acid service [web:20].
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KSB - Armaturen
PRESSUREseal gate valves Class 4500. ARIS automation interface. SIL 3 certified [web:20].

Material Compatibility Matrix

Media Type Carbon Steel 304SS 316SS Duplex 2205 Hastelloy C276
Hydrochloric Acid✗✗✗○✓
Sulfuric Acid○○✓✓✓
Seawater✗○○✓✓
Steam (>400°C)✓✓✓○✗

Compliance Standards

Design: ASME B16.34, API 598/6D/600, MSS SP-25/55/61/67/68/71/72/75/81, NACE MR0175/0103
Testing: Hydrotest 1.5x MAWP, Pneumatic 1.1x MAWP, Seat leakage L0.01 ml/min/inch, Fugitive emissions EPA Method 21
Fire Safety: API 607/6FA/6FB, BS 6755 Part 2