Low pressure push button deadman control with 0- 30psi. / 2 bar gauge with built in 9psi./ .62 bar relief valve. Used to control pressurizing and deflation of low pressure bags. Comes standard with .25 in. / 6mm inlet (air source) fitting and .75 in./ 1.88 cm outlet (to airbag or cushion) fitting, other styles or configuration available upon request.