Professional Two Stage VTS 250, Oxygen, 540, 9/16-18 UNF (M), 40 PSIG

Features: Delrin insert bushing for durability, easier adjusting. | Die-forged brass spring housing cap provides greater strength and durability. | Stainless steel diaphragm gives accurate long lasting service. | Stem-type seat mechanism inlet pressure aids in sealing. | Stainless ball in key for easy adjustment. | Adjusting spring pretested for quality assurance. | Precision machined nozzle for optimum flow control. | Adjusting spring designed for precise preset.