The INVALCO Series 524 is a lever-operated, double-port valve used as an oil or water dump valve on separators, treaters, free water knockouts and similar vessels that call for a lever-operated (float-linkage) valve. Double-port design for maximum discharge, soft seat for positive shutoff, globe or angle bodies, and NACE adaptable (RNCE available) for sour service. Lever and lever collar are furnished with each valve.
Key specifications
- Body: Ductile iron A-395, globe or angle
- End connections: 2"-6" ANSI 150# RF flanges
- Maximum working pressure: LSG-203 / LSA-203: 300 psi; LFG-201 / LFA-201: 175 psi (not printed for the 3"-6" rows)
- Temperature: -20 to 250 °F
- Stem and plugs: 303 stainless steel
- Seat cages and guides: 304 SS (2"-4"); 303 SS (6")
- Valve plugs: Replaceable Buna (2"-4"); fluoroelastomer O-ring (6")
How to specify / order
- Globe body: 2" LSG-203-524 (300 psi, 1-7/8" trim, Cv 44.0, P/N 80005436, 32 lb); 2" LFG-201-524 (175 psi, Cv 44.0, 80005426, 34 lb); 3" LFG-301-524 (2-5/8", Cv 81.6, Cg 2,690, 80005427, 71 lb); 4" LFG-401-524 (2-5/8", Cv 89.8, Cg 2,960, 80005428, 93 lb); 6" LFG-601-524 (4-3/8", Cv 550, Cg 16,500, 80005429, 150 lb)
- Angle body: 2" LSA-203-524 (300 psi, 80005431); 2" LFA-201-524 (175 psi, 80005422); 3" LFA-301-524 (80005423); 4" LFA-401-524 (80005424); 6" LFA-601-524 (80005425) - same trims, Cv/Cg and weights as the matching globe models
- Per the bulletin, specify model number and part number; part numbers apply only to the exact configuration described
- State if NACE (RNCE) construction is required
Only pages 1-2 of the bulletin were used; the parts pages were not reviewed for this listing. Bulletin gaps to confirm with the factory: maximum working pressure is printed only for the 2" rows (blank for 3"-6"); and the specifications list only 150# RF flanged ends, while the 300 psi LSG-203 / LSA-203 models' end connection is not described.
Pricing and lead time are quoted per configuration. Send the model code (or your application details), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter (INVALCO) bulletin SSIN058 Rev 0.1 (1/19) - pages 1-2 read; confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.

