National Oilwell Varco™ offers a premier line of hydraulic top drive drilling systems for today's advanced land drilling rigs. NOV continues to provide low maintenance, high performance, hydraulic top drives to the land market in a highly portable, rugged and reliable package. The TDH line of hydraulic top drives turn your workover rig into a capable land drilling rig.
Features of a portable top drive system include quick rig-up and rig-down guide track and service loops, self-contained control systems and an easy-to-use top drive control station. NOV's portable top drives bring all the benefits and features of our larger top drive systems to the mobile land rig market where safety and performance are the keys to your success.
原装进口NOV 14-P-220 MUD PUMP PARTS
TYPE:valve 40
valve seat 40
piston 6 1/2"
cool cylinder
6-1/2" packing ring
ring
spring
head
out cover
seal gasket
cool cylinder
seal
valve
valve seat
ring
piston
clamp
