9171-53 Pres Air Trol Vacuum Switch, PresAirTrol, 21A, 1/8"mpt, Adj 135-250" water VM12540E 610902   135-300" H20, 21A uses 9/16" panel mount hole or 1/8"npt Product Type: Spa Control Manufacturer: Presair

VS12506E Pres Air Trol Vacuum Switch, PresAirTrol VS11106E, 21A, 1/8"mpt Vacuum Switch1/8"npt, no panel mount, 21 amp

TNP11E2PR Pres Air Trol Pressure Switch, PresAirTrol Tinytrol, 21A, 1/8"b, SPDT,2psi TNP-111R-2PR PATTNP111R2PR 610903 9171-52 TNP-111E-2PR Tinytrol Pressure Switch1/8"NPT, no panel mount, 2psi, 21 amp, SPDT

PT211120A Pres Air Trol Pressure Switch, PresAirTrol Center Spout, 21A, 1/8"b, DPDT PT21120A Adjustable 1-5psi, 1/2"thd panel mount only, rated at 21 ampsP:A:T# PT21120ADPDT

PT11120A Pres Air Trol Pressure Switch, PresAirTrol Center Spout, 21A, 1/8"b, SPDT   Adjustable 1-5psi, 1/2"thd panel mount only, rated at 21 ampsP:A:T# PT11120A

PR21120A Pres Air Trol Pressure Switch, PresAirTrol Side Spout, 21A, 1/8"b, DPDT Adjustable from 1-5psi, 1/8" side nipple, mounts to panel with self-tapping #4 screws. Rated at 21 ampsP:A:T# PR21120ADPDT

PR11120A Pres Air Trol Pressure Switch, PresAirTrol Side Spout, 21A, 1/8"b, SPDT Adjustable from 1-5psi, 1/8" side nipple, mounts to panel with self-tapping #4 screws. Rated at 21 ampsHergair# 6731-10P:A:T# PR11120ASPDT

610913 Pres Air Trol Pressure Switch, PresAirTrol Thd Stem, 21A, 1/8"mpt, DPDT PM21120A Adjustable from 1-5psi, 1/8"npt or 1/2" panel mount, rated at 21 ampsHergair# 6742P:A:T# PM21120ADPDT

PM11120E Pres Air Trol Pressure Switch, PresAirTrol Thd Stem, 21A, 1/8"mpt, SPDT PM11120A 610914 Adjustable from 1-5psi, 1/8"npt or 1/2" panel mount, rated at 21 ampsHergair# 6741P:A:T# PM11120ASPDT