The INVALCO Series 476 is a diaphragm-operated three-way valve for diverting, blending, manifolding and volume metering service, used primarily on LACT units (for example diverting off-spec oil). It offers replaceable seats, grooved or threaded bodies, direct, reverse or air-operated-both-ways action, and a two- or three-position inner valve; the three-position version gives positive shutoff when metering fluids. NACE adaptable for sour service.
Key specifications
Body / cover: Ductile A-395 body; carbon steel cover
End connections: 2" grooved or 2" NPT
Diaphragm operator: Steel, 26 sq. in., nylon-reinforced Buna-N; 70 psi max. recommended operating, 100 psi max. containment
Temperature: -20 to 250 °F
Trim: Removable 303 SS stem, cage and seats; Buna-N O-ring valve plugs; 1-3/4" orifices
Packing: Non-lubricated Buna-N, center bleed, spring loaded
Flow capacity (fully open): Cv 30 common-to-upper, Cv 58 common-to-lower (all models)
Spring action: Direct = normally closed lower port; reverse = normally open lower port; no spring = air operated both directions
How to specify / order
Two-position, grooved: DQY-204-2-476 direct 80004095 (30 lb); DXQY-204-2-476 reverse 80004096 (32 lb); DDQY-204-2-476 no spring 80004097 (27 lb)
Two-position, threaded: DSY-204-2-476 direct 80004156; DXSY-204-2-476 reverse 80004157; DDSY-204-2-476 no spring 80004158
Three-position, grooved: DQY-204-3-476 direct 80004098; DXQY-204-3-476 reverse 80004099; DDQY-204-3-476 no spring 80004100
Three-position, threaded: DSY-204-3-476 direct 80004159; DXSY-204-3-476 reverse 80004160; DDSY-204-3-476 no spring 80004161
Per the bulletin, specify model number, part number and trim description; part numbers apply only to the exact configuration described
Only pages 1-2 of the bulletin were used; the dimension and parts pages were not reviewed for this listing. Bulletin issue to confirm with the factory: the specifications give a 26 sq. in. diaphragm operator, but general note 1 says standard topworks has a 20 sq. in. effective area.
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 SSIN066 Rev 0.0 (3/18) - 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.