AF Hydro — our broadest range, batch‑tested.

Addison Fluids, founded in Singapore in 2016. The brand covers around 2,000 standard products across AF Valves, AF Fittings and AF Tubes, and it is exclusive to our group — which is why we can publish the full documentation and hold the specification steady between orders.

Seat leakage to API 598 (9th Edition, 2009), with no visible leakage permitted on the shell and backseat tests. Every product carries a heat number, and 2% of heat numbers on new stock are batch‑tested. Each product page on this site states the shell, seat and air test pressures for its own variant.

Yes — in full. Every AF Hydro valve we stock has its own page with the complete dimension tables, the numbered bill of materials and the sectional drawing, quoted exactly as the catalogue prints them, plus the catalogue PDF as a direct download. Anything the catalogue does not state — an operating torque, a working temperature — we confirm with the factory on enquiry rather than estimate.

Ask for them on the enquiry, before the order is placed. Heat numbers are on the products themselves, so a certificate can be matched to the exact casting — tell us the requirement (for example a mill certificate against the heat number) and we will obtain it from the factory with the shipment.

ANSI Class 150 and 300, JIS 10K, PN10/16 and PN16/PN40 across the flanged valves, plus BSPP and NPT threads and socket weld ends on the threaded ranges. These standards do not bolt to one another even where the pressure ratings look similar — each product page says which one it is drilled for.

Yes — held in Malaysia or Singapore and dispatched same or next working day, with quotations from a product specialist within two working hours.

Three things you can hold us to. The specification does not drift — a repeat order matches the first one, because we control what the factory ships. The documentation is complete and public — dimension tables, bills of materials, drawings and test pressures on every product page, with no registration wall. And the stock is ours, held in Malaysia or Singapore, so the lead time is a courier’s, not a mill’s.

Yes — and this is where the published bills of materials earn their keep. Every product page lists the parts with the manufacturer’s own callout numbers, matching the sectional drawing. Quote the valve, the size and the item number — for example “2" ANSI 150 SS316 ball valve, item 7” — and we confirm the part and material with the factory before anything ships.

Two of the ranges publish an actuator interface: the PN16/PN40 wafer ball valve carries an ISO 5211 pad with F03 and F04 cast into the top plate, and the butterfly valves publish their top‑flange drilling. The threaded ball, gate and globe ranges are supplied lever or handwheel operated with no published pad. Operating torque is not printed for any of them — and an actuator has to be sized on torque — so tell us the actuator and we confirm the mounting and the torque with the factory before you order either half.

The threaded ranges are soft‑seated PTFE valves and the literature claims no fire‑safe design — if your specification calls for a fire‑safe certificate, those do not meet it on paper. On the flanged side, each variant states its design standard on its page — API 608 on the cast steel flange end ball valves and API 6D on the ANSI 300 SS316. If a certificate has to accompany the valve, say so on the enquiry and we confirm what the factory can issue.

The catalogues do not print flow coefficients (Cv), operating torques, and for some variants a working temperature or test table. We treat the catalogue as the standard: what it prints, we publish exactly; what it does not print, we confirm with the factory on enquiry rather than estimate. Each product page says plainly which figures are in that second category.

AF Hydro is our low pressure brand — threaded ball valves to 1000 and 2000 PSI, flanged valves by class (ANSI 150/300, JIS 10K, PN10/16/40), and 800 PSI threaded gate, globe and Y‑strainer ranges. Above that sit the separate high pressure valve ranges — different construction, different brands, their own pages. If you are near the boundary, send the working pressure and temperature together and we will place you on the right side of it.