Unrestricted Full
Port Seatless Design
Maximum Flow Area
Minimum Pressure Drop
Elimination of Metal to Metal Rotating Parts
No pins to wear
No seats to wear
No spring to break
Non Slam Quick Closure Feature
Minimum travel of valve plates from full open to full closed position reduces closing
time
Elimination of spring restricts "slamming" action
Tight Shutoff Feature
Flexible elastomer provides perfect seal
Seals tightly at extremely low back pressures