For palm, finger, knee or straight-line mechanical operation.
Can also be cam actuated if cam rise is gradual. Unguarded
type has button exposed above valve body approximately 1/8”,
which is distance required for full actuation. Guarded type has button flush with the button guard to protect against accidental
actuation. Nominal operating force is 3.75 lbs. + .05 times line
pressure (or 3.25N x bar line pressure + 17N).