The spring opens or closes
100 mm (4 in) to 1,066 mm (42 in) diameter
Pneumatic up to 300,000 lbf (1,300 kN)
Spring force up to 700,000 lbf (3000 kN)
Wide operating temperature range
Material selection: Mild steel, aluminum and stainless steel
Designed for custom customer applications
Double and triple pistons are available for restricted area valve drives