Gate valve for vacuum and seal member used therefor
Gate valve having a pressure-secured seat
Gate valve having O-ring seal
Gate valve having removable seals
Gate valve seal system
Gate valve seat
Gate valve sleeve
Gate valve structure
Gate valve structure
Gate valve with dual seal rings on a unitary seat ring
Gate valve with improved seal unit
Gate valve with lock ring
Gate valve with lubricated secondary seal
Gate valve with offset valve stem
Gate valve with reinforcing ribs
Gate valves
Gate valves
Gate valves
Gate valves with seat protectors
Guided gate valve