Order at a Glance
| Field | Detail |
|---|---|
| Products | Gate, globe, check, ball and butterfly valves |
| Projects | Large refining and petrochemical integration projects, China and the Gulf |
| Year of supply | 2019–2023, in batches tied to construction stages |
| Design standards | API 600, API 594, API 6D / API 608, API 609; ASME B16.34; ends to B16.5 / B16.25 |
| Fire safety | API 607 / API 6FA on soft-seated designs |
| Sour service | NACE MR0175 / ISO 15156 materials, hardness ≤ 22 HRC |
| Certification | EN 10204 3.1 / 3.2; TPI-witnessed shell and seat tests |
Scope of Supply
Each family owns a different position on the plot, and a schedule that mixes all five is how a refinery actually buys. The table below is the division of labour this package was built on.
| Family | Standard | Position on the plot | Design notes |
|---|---|---|---|
| Gate | API 600 | Line isolation on process headers and unit inlets | Open for months at a time; wedge or slab per line class; fire-safe backup on soft-seated sizes |
| Globe | API 600 | Throttling and small-bore isolation | Takes the scoring a gate seat suffers if throttled; common to DN50 and below |
| Check | API 594 | Pump discharge and reverse-flow protection | Dual-plate on water, utility and most process services; swing on larger bores |
| Ball | API 6D / API 608 | Quarter-turn shutoff on skids, manifolds and tie-ins | Floating to NPS 6", trunnion above; fire-safe soft seats |
| Butterfly | API 609 | Large cooling-water, utility and flare headers | Category A concentric and Category B double-offset per pressure class |
Quantities, sizes and pressure classes are not published; line items follow the purchase order of each batch.
How the Package Split Across the Plant
An integration project does not buy valves once. It buys them by unit, and each unit pulls a different mix from the same five families, which is why a supplier carrying all five is useful in the first place.
Atmospheric and vacuum distillation runs on gate valves - large bores, Class 150 to 300, isolation positions that stay open for the whole run. The globe valves sit on small-bore services where someone will actually throttle, and the dual-plate checks guard every pump discharge.
Hydrotreating and hydrocracking shift the mix upward in class. Reactor-loop isolation moves to Class 600 and above, and the hydrogen side cares about seat tightness more than flow coefficient, so the ball valve share grows and the gate share narrows to specific isolation points.
Utility, cooling water and flare systems take the butterfly valves. Above NPS 24", a gate valve is a crane lift and a butterfly is a lug body two men can carry - same isolation duty, different weight class entirely, and the flare headers keep the fire-safe certification relevant on every soft-seated size.
Inspection and Certification
Shell tests ran at 1.5× rated pressure and seat tests at 1.1× per the governing standard, witnessed by third-party inspection on the batches that specified it. Soft-seated designs carried fire-safe type-test certificates to API 607 or 6FA. Sour-service materials followed NACE MR0175 / ISO 15156 with hardness at or below 22 HRC verified on mill certificates. Every shipment went out with EN 10204 3.1 material certificates, upgraded to 3.2 where the order called for TPI endorsement, and nameplates carried tag numbers tied to the batch test file.
Packaging and shipping
GNEE supplies the full isolation schedule - gate, globe, check, ball and butterfly - to refining and petrochemical projects, on API 600 / 594 / 6D / 608 / 609 with fire-safe and NACE documentation.
FAQ
Which valve types were covered in this supply?
Five families: gate valves for line isolation, globe valves for throttling and small-bore isolation, check valves against reverse flow, ball valves for fast shutoff, and butterfly valves for large-diameter, lower-pressure duties. Together they cover nearly every isolation and non-return position on a refining and petrochemical plot, supplied across 2019 to 2023.
How do the five valve families divide the work in a refinery?
Each family owns a different position. Gate valves isolate lines they leave open for months; globe valves throttle and handle small-bore isolation where a gate seat would be scored; check valves protect pumps and prevent reverse flow, with dual-plate designs on most water and utility services; ball valves give quarter-turn shutoff on skids and manifolds; butterfly valves take the large cooling-water and low-pressure flare lines where a gate stops making sense on weight and cost.
What standards govern a mixed valve package like this?
Gate and globe to API 600, dual-plate checks to API 594, ball valves to API 6D and API 608, butterfly valves to API 609, with ratings to ASME B16.34 and flanged or welded ends to B16.5 and B16.25. Soft-seated designs carry fire-safe certification to API 607 or 6FA, and materials follow NACE MR0175 / ISO 15156 where the stream is sour.
What does a five-year supply window mean for buyers?
2019 to 2023 was not one order. Integration projects buy valves in batches tied to construction stages, so the same schedule was released many times: sizes per the piping class of each unit, batches per the erection sequence, and every batch carrying its own inspection record and certificates. A supplier who repeats the same acceptance basis across five years is the point of a track record like this.
How were fire-safe and sour-service requirements handled?
Soft-seated ball, butterfly and gate designs carried fire-safe type-test certification to API 607 or 6FA, so the valve isolates even after its soft seat burns away. On sour units, materials in contact with the stream followed NACE MR0175 / ISO 15156 with hardness at or below 22 HRC on load-bearing parts, verified on the mill certificates.
What documentation comes with each shipment?
EN 10204 3.1 material certificates, upgraded to 3.2 where third-party inspection applies; shell and seat test records per the governing standard; fire-safe certificates for soft-seated designs; and NACE compliance records where required. Nameplates carry tag numbers, so each valve traces back to its own batch test file years after installation.