Model: NOV 94537-130N Pilot To Close Cartridge Check Valve
Structure: Threaded screw-in cartridge valve
Working medium: Anti-wear mineral hydraulic oil
Operating temperature: -40℃ ~ +85℃
Installation: Integrated hydraulic manifold valve block
Fit equipment: NOV Varco TDS-9SA / TDS-11SA drilling top drive
Feature: Load holding, pilot controlled reverse opening, prevent cylinder drift
Application: Back-up tong, gripper, counterbalance cylinder pressure lock circuit
