Services · Specialty Engineering
Severe Service Control Valve Packages — engineered for any process plant.
Fully engineered control-valve packages for the hardest service across oil & gas, petrochemicals, power, chemicals, fertilisers, metals & mining, pulp & paper, and every other process industry — anti-cavitation, anti-surge, high pressure-drop, sour-service, cryogenic, and erosive duty. Sized, selected, packaged, and certified to the standards your EPC and operator will accept without argument.
What's in the package
Every package is a complete, shop-assembled, tested, and certified system — not just a valve body.
Severe-Service Valve Body & Trim
Globe, angle, axial-flow, or rotary body as selected. Multi-stage anti-cavitation, drag, labyrinth, or characterised trim engineered to the dP profile.
Actuator
Pneumatic diaphragm, piston, scotch-yoke, or electro-hydraulic — sized for fail-safe action, stroke speed, and Cv signature. Spring-return where required.
Smart Positioner & Comms
HART, FOUNDATION Fieldbus, PROFIBUS PA, or WirelessHART digital positioner. Diagnostics, partial-stroke test, and asset-management integration.
Safety & Interlock Hardware
Solenoid valves (SIL-rated), air-lock relays, quick-exhaust valves, limit switches, lock-up valves, and partial-stroke-test controllers for SIS duty.
Noise & Vibration Control
Inline diffusers, vent silencers, downstream flow straighteners, acoustic insulation, and pipe-wall thickness recommendations for hydraulic/aerodynamic noise compliance.
Air Prep & Accessories
Filter-regulators, volume boosters, air tanks for fail-action, tubing, fittings, mounting hardware, nameplates — everything you need for turnkey installation.
Severe service we specialise in
The conditions that kill standard valves.
Most control-valve failures in oil & gas plants trace back to wrong trim selection, undersized actuator, or noise / erosion limits breached. Our engineering review catches these before the valve is cut — not after a trim is wrecked in the first six months.
Every package is backed by a sizing and selection report, trim-exit velocity calculation, noise prediction per IEC 60534-8-3/4, and a valve-life expectation under your actual service conditions.
- High pressure-drop letdown — cavitation & flashing control
- Compressor anti-surge — fast stroke, high rangeability
- Wellhead choke service — erosive & multiphase
- Sour-service NACE MR0175 duty
- Cryogenic (LNG, ethylene, ammonia) applications
- Coker, hydrocracker, FCC slurry, SRU duty
- Steam conditioning & desuperheating
- High-temperature HP steam & reheat service
Our engineering approach
A six-step process from your datasheet to a tested, certified, shipped package.
Process review
Datasheet ingestion, P&ID review, upstream / downstream line-size validation.
Sizing & trim selection
IEC 60534 sizing, cavitation index, FL, xT, noise prediction, erosion check.
Package design
Actuator sizing, positioner specs, SIL architecture, accessory BoM, GA drawings.
Fabrication
Body casting / forging, trim machining, NDT, PMI. Full MTC traceability.
FAT & certification
Hydro / pneumatic / functional / SIL PST / noise. Witness by client or TPI as required.
Delivery & commissioning
Packaged, tagged, shipped. Site supervision, loop check, and tuning support.
Industries & applications we serve
Every process plant has its hard services. Here are the ones we regularly engineer packages for.
Standards & certifications
Every package is built to — and documented against — the standards your EPC and operator require. No arguments about compliance at the document-review stage.
- ISA S75.01 / IEC 60534 — sizing, flow, and noise
- ASME B16.34 — pressure-temperature rating
- API 6D, 598, 607, 6FA — testing & fire-safe
- NACE MR0175 / ISO 15156 — sour service
- IEC 61508 / 61511 — SIL certification for SIS duty
- ATEX / IECEx — hazardous-area instrumentation
- PED 2014/68/EU & CE marking where applicable
- EN 10204 3.1 / 3.2 material test certificates
- TPI witness inspection (Lloyd’s, BV, DNV, TÜV)
Engagement models
From one-off packages to framework supply for EPC projects.
Single-valve package
Best when
You have one critical service you need to get right — e.g. a high-dP letdown or a compressor anti-surge valve
Scope
Full engineering, valve + actuator + instrumentation, FAT, certification, shipped ready to install.
EPC project supply
Best when
You are building or revamping a process unit and need the full valve package under one contract
Scope
All control valves across the unit — common documentation, unified instrumentation standard, coordinated FAT, consolidated shipment.
Plant-wide retrofit & upgrade
Best when
You have chronic valve failures in specific services and want a single partner to review, replace, and document
Scope
Audit of problem services, trim / body redesign, phased replacement, installation supervision, documentation refresh.
Have a valve that keeps failing?
Share the process datasheet, the failure mode, and a few photos. We'll come back with a root-cause read, a redesigned package spec, and an indicative quote inside two weeks.