馬克63的設(shè)計(jì)是為了保持一個(gè)恒定的壓力之間的壓力在排放側(cè)的調(diào)節(jié)器和信號壓力加載在隔膜上。馬克64提供了相同的流量，但由于隔膜較大，控制壓力的偏移較小。本系列是理想的燃油霧化應(yīng)用。還提供了一個(gè)負(fù)差分版本。

Sizes	Mark 63: 1/4″ – 2″ (D N8 – DN50); Mark 64: 1/4″ – 3/4″ (DN8 – DN20)
Cv (Kv)	up to 30 (up to 25,8)
Diaphragm Materials	Jorlon, Stainless Steel, Buna-N, Viton
Setpoint	Mark 63: 1 to 220 psi (0,07 to 15,2 bar); Mark 64: 1 to 180 psi (0,07 to 12, 4 bar)
Body Material	Ductile Iron, c, Carbon Steel, Stainless Steel
End Connection	Threaded, Flanged, Socket Weld, Butt Weld
Options	Double Diaphragm, Flow through Dome, and Handwheel