The TSI Flow Products model AH Actuator is a piston-type actuator mounted on a reverse-acting gate valve, designed to be fail-safe and fail-close. Recommended for use in high-pressure and large-bore applications.
This hydraulically controlled actuator operates using a closed hydraulic system completely independent of well fluids and pressure. The hydraulic pressure on the piston holds the valve open.
An integral part of a safe wellhead system, it will automatically close with the loss of control pressure and open automatically when the control pressure is restored.
As an added safety feature, in the event of a fire, the metal to metal seal between the bonnet and the lower stem acts as a secondary seal if the stem packing is damaged. They are used as a secondary master valve and wing valve in trees, flow lines, etc…
AH Hydraulic Actuator Features and Benefits
- Visual and electric position indicators are available
- The actuator is easily removable from the bonnet
- Upper spring retainer retains return spring in the upper section of the housing during assembly or disassembly
- The seal with backup wear ring contains hydraulic pressure for the operating piston. The backup ring reduces wear and keeps the piston aligned with the actuator sleeve
- Piston and actuator are coated for corrosion protection
- No pressure in housing
AH Hydraulic Actuator Parts Breakdown
- Upper Spring Retainer
- Housing
- Down Stop Shaft
- Bonnet
- Slab Gate
- Body
- Top Shaft
- Piston
- Downstop
- Spring
- Stem
- Packing Retainer
- Seat Assembly
Contact your Local TSI Flow Products sales rep for more information or to place an order.