Heavy-duty, large diameter shaft to eliminate flexing and breakage; Dual shaft seals eliminate leakage.

PTFE bearing on shaft eliminates friction and wear; stem design is "blow-out" proof.

PTFE seats energized with O-rings eliminate wear and improve cycle life.

Trunnion design eliminates lateral ball stress and allow downstream piping to be disconnected under full line pressure.

Z-vent allows sodium hypochlorite outgassing to escape safely downstream.