Mini Low-Flow Switches are configured to open the SPST contact when flow goes beyond the set point or stops. Typical applications include gas/liquid sampling; chemical injection; pollution control monitoring; atmospheric furnaces; and process systems. | Choose from a brass switch (32929-00) for pressures up to 1500 psi or a switch made from PTFE (32929-02) for good chemical compatibility. Wetted materials are brass, epoxy, and Viton<reg> for model 32929-00; PTFE for model 32929-02. Repeatability is <tol>2%. Measure 1-Â¼''W x 2-5/8''H x Â¾''D.