The INVALCO Model CADM is a diaphragm-operated pilot valve (pressure switch) for pneumatic or hydraulic control. It carries one, two or three snap-acting three-way Micro Valves to give on/off output to one or more circuits. The Micro Valves are isolated from the diaphragm and from each other, so different output pressures and media can be used in the same pilot. Process pressure under the diaphragm raises the stem against an adjustable range spring; adjustable drive collars set the span. Removing a drive collar converts it to manual reset for lock-up or alarm service, and the clear cover shows Micro Valve position and approximate process pressure.
Key specifications
Spring ranges: 5-12, 10-27, 25-45, 40-60 psi (factory preset to mid-range)
Micro Valve flow: Type 316F1, 1/16" orifice, 6.5 cfm at 100 psi; Type 38F1, 1/8" orifice, 26 cfm at 100 psi
Maximum working pressure: Micro Valve 100 psig
Materials: Aluminum diaphragm case and Micro Valve case; Micro Valve aluminum body, stainless trim, Buna-N inserts and seals; stainless and brass stem and bushing
Process connection: 1/4" NPT
How to specify / order
CADM-2501-B1 (Type 316F1, 3-way 1/4" FPT, 1/16" orifice): 5-12 psi 80000904; 10-27 psi 80000905; 25-45 psi 80000906; 40-60 psi 80000911; repair kit 80100915
CADM-3801-B1 (Type 38F1, 3-way 3/8" FPT, 1/8" orifice): 5-12 psi 80001004; 10-27 psi 80001005; 25-45 psi 80001006; 40-60 psi 80001007; repair kit 80101005
Number of Micro Valves (1, 2 or 3) and required actuating point; actuating pressure and span limits for each spring are in the bulletin table
Bulletin notes: the ordering table is mislabeled "Float Rod Chart"; the title uses CADM-2501-B / CADM-3801-B while the table uses the -B1 suffix; and the specifications refer to a page-2 table for actuator maximum working pressure that does not appear on page 2. Confirm the actuator pressure rating 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 SSIN012 Rev 0.1 (9/17); 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.