Engineered for high-pressure, abrasive and high-cycle frac service, VALVREX™ combines a bi-directional slab gate architecture with spring-energized sealing, metal-to-metal gate and seat interfaces, and an integrated sand barrier. The design eliminates routine grease injection during frac operations and simplifies field serviceability.
Frac valves operate in a severe combination of high pressure, repeated cycling, abrasive proppant and chemically aggressive fluids. In grease-dependent designs, field reliability can also depend on the condition of grease ports, injection equipment and maintenance execution. VALVREX™ addresses these operating challenges through sealing architecture and debris exclusion rather than relying on routine grease injection for pressure sealing.
Frac sand and debris can migrate toward sealing interfaces, increasing the risk of erosion, wear and sealing damage.
Repeated opening and closing cycles place sustained demand on gate, seat, stem and packing systems.
Grease-dependent systems add injection equipment, fittings and maintenance procedures to the operating workflow.
When inspection or redress is required, simplified architecture can reduce the number of interfaces that must be serviced.
The core VALVREX™ sealing concept combines spring-energized sealing elements with metal-to-metal sealing at the gate and seat faces. The sealing elements are designed to maintain contact as components wear, while the primary metal sealing surfaces provide the pressure-control interface.
Spring-loaded polymeric and elastomeric sealing elements provide sealing energy and automatic wear compensation without grease injection for pressure sealing.
Hardened gate and seat sealing surfaces are used to support wear resistance in abrasive frac service.
The stem sealing system uses spring-energized packing and does not require sealant injection during normal operation.
Seal materials are selected for resistance to frac fluids and the specified service environment. Final material compatibility remains configuration and application dependent.
VALVREX™ uses a bi-directional slab-gate architecture designed for high-pressure surface pressure-control applications. Its symmetrical seat arrangement allows sealing from either side at rated working pressure, simplifying orientation within frac trees, zipper manifolds and other high-pressure surface systems.
VALVREX™ uses a reduced component architecture with one-piece floating seats, a solid slab gate and controlled sealing interfaces. The design intent is to simplify inspection, gate and seat access, and redress activities when maintenance is required.
Fewer internal components and sealing interfaces can simplify inspection and service procedures.
Architecture is intended to support practical seat replacement and gate inspection during redress.
Removal of routine grease injection eliminates grease pumps, fittings and injection procedures from normal frac operation.
Available with manual handwheel, hydraulic actuator and optional electric actuation, subject to configuration.
Published configuration data reflects current source documentation. Final ratings, material classes and design references remain subject to verification against the offered configuration.
The comparison below addresses design philosophy and operating workflow. Conventional maintenance practice varies with valve design and operator procedure.
| Criteria | VALVREX™ | Conventional Grease-Dependent Design |
|---|---|---|
| Pressure sealing | Designed without routine grease injection | May use grease / sealant injection depending on valve design and maintenance practice |
| Debris management | Integrated sand barrier protects sealing zone | Approach varies by design |
| Flow orientation | Bi-directional design | Design dependent |
| Maintenance workflow | No routine grease injection during frac operation | May include grease equipment and injection procedures |
| Field service | Simplified component architecture | Design dependent |
Share your frac programme, pressure envelope, connection requirements and actuation philosophy. A field trial, technical data set or full field-performance review can be arranged against the operating requirement.
The VALVREX™ corporate brochure, approved technical data sheet and field-performance case study are available on request.
