Gate Valves
Gate Valves – Manual / ROV
Our Gate Valve range has been developed using many years of expertise, to give a robust, high-integrity solution. Using Tungsten Carbide coated Gates and Seats as standard, this valve offers a robust solution to your process needs, particularly where repeatable tight shut-off is required. Available in sizes from 1/2” up to 16”, and pressures up to 15,000psi.
Product Features
- Spring energised seats
- Dual Stem seal arrangement
- Anti-blow-out Stem
- Suitable for manual, ROV or actuator operation
- Rising Stem design
Design Benefits
- Bi-directional sealing
- Compact design
- No lubrication or maintenance required
- Easily configured to suit various end connections
- Rate A (zero) leakage as standard
- Modular approach allows manual / ROV top-works to be replaced with actuator if required.
Gate Valves – Hydraulic
Pacson’s hydraulic gate valve is available in sizes from 1/2” to 12” in all materials and pressures up to 15,000psi.
Onshore & offshore (topside) variations are available.
Product Features
- Hard faced metal to metal sealing
- Bolted bonnet
- Solid slab
- Double barrier PTFE stem seals c/w metal backseat
- Spring energised seats
- FSC/FSO/FAI linear actuators
- Non spring compressing rotary ROV override
- Metal to metal static body seals
- Fully compensated
- Direct mechanical position indication
- API 17D Qualification Status
Design Benefits
- 1” Hydraulic gate valve is API 17D 2nd edition qualified to 15,000psi, coil spring design
- ½” Hydraulic gate valve 15,000psi variant API 17D 2ndEdition qualification testing planned in 2018
Gate Valves – Double Barrier
The Through Conduit Solid slab gate alternative to a Double Expanding Gate Valve.
Bi-Directional Triple Barrier Sealing
Product Features
- Twin Metal Seats as standard: Spring energised inner seat, fixed outer seat
- Double Block and bleed as standard
- Double Isolation and Bleed as standard (upstream + downstream)
- Tertiary downstream isolation
- Integrity of Double Isolation verifiable in service by pressurisation of valve cavity
- Suitable for manual, ROV or actuator operation
- Rising Stem design with backseat
- Die Stamped Forged Option
- Seat pocket, seals or all wetted area overlay options
Design Benefits
- High Integrity Rate A sealing capability at each isolation/block
- Sealing performance unaffected by solids
- Upstream isolation/block performance independent of stem loading
- Predictable, repeatable thrust in operation unaffected by thermal wedging or trapped solids
- Guaranteed alignment of through bore when open
Gate Valves – Surface
Pacson’s API6A topside wellhead gate valve
1-13/16” through 5-1/8” API 5000 & 10000
Simple robust non-elastomeric metal seated design
Product Features
- Die Stamped Forged body as standard
- Metal Seated as standard
- Suitable for Handwheel or actuator operation using Pacson’s compact linear actuator (fail close, open or stay put)
- Rising Stem design with backseat (linear actuator)
- Non-rising stem with backseat (handwheel)
- Electric actuation options.
- Seat pocket, seals or all wetted area overlay options
- Dual Stem seal arrangement with facility to inject emergency sealant
Design Benefits
- Simple Construction and minimised machining enables Pacson to provide competitive pricing for a valve of this performance
- Reduced weight plus envelope dimensions