The INVALCO Model CQ-401 is a dual-purpose continuous drain float valve that automatically discharges liquid or vapor from a tank. It is widely used in the bottom of fuel gas scrubbers to continuously drain accumulated liquids so they are not carried to the burner. For liquid drain-off the valve opens when liquid rises above the float; for gas/vapor venting it opens when liquid is below the float. Rotating the valve assembly 180° switches between the two modes.
Key specifications
Float: 3-1/2" x 6" long, 316 SS
Orifice: 1/8", 3/16", 1/4" or 3/8"
Float rod: 5-1/2" standard; 14-1/2" available
Mounting: 4" grooved coupling adapter
Flapper: Molded nitrile
Overall length: 13.2" with 5.5" rod; 22.2" with 14.5" rod
Weight: approx. 5 lb
How to specify / order (catalog model CQ-401-820, 4" nozzle)
1/8" orifice: 80003102
3/16" orifice: 80003103
1/4" orifice: 80003105
3/8" orifice: 80003106
Grooved coupling, clamps and nozzle are not included
Optional 14-1/2" float rod: 45003152; spare orifices 45002493 / 45002494 / 45002495 / 45002496
Note: the bulletin text gives the discharge as 1/2" NPT while the dimension drawing labels it 1.5" NPT; confirm the discharge size with the factory.
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 SSIN010 Rev 0.1 (8/17); 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.