The A-to-F letters are trade nomenclature. Neither governing standard uses them: A-A-59326 classifies by Roman numeral, and EN 14420-7 uses two-letter connection codes. They map to each other by configuration, and EN 14420-7 publishes a…
EN 10204:2004 says an intermediary may only pass on the manufacturer’s inspection document, as an original or an unaltered copy, with suitable means of identifying the product so traceability holds. A distributor cannot issue you…
On 1 June 2024, two Acts took effect together: the Occupational Safety and Health (Amendment) Act 2022 (A1648), and the Factories and Machinery (Repeal) Act 2022 (Act 835). Act 835 repealed the FMA but carried…
Three pressures, not one, specify a check valve. Cracking pressure opens it, reseal pressure is where it shuts bubble-tight again, and back pressure is what it can hold. On DK-Lok’s V33 range, those three come…
Choose a pneumatic fitting by matching four things to the line: connection type (push-to-connect, compression, barb, or threaded), port thread standard, tube outside diameter and material, and body material for the environment. Get the thread…
Choose a needle valve for a small-bore line, generally under 1 inch, that needs fine, repeatable flow control or tight isolation: a gauge root, a bleed point, a sample take-off, or a metering line. Match…
Choose a ball valve by matching four things to your service: body material (WCB for clean hydrocarbons, 316 where chloride conditions permit, NACE-qualified alloys for sour gas), pressure class per ASME B16.34, bore (full for…
An instrument quick connect belongs on a sampling line only where a connection is made and broken repeatedly and must reseal with minimal spillage: grab-sample cylinders, analyser take-off, portable calibration. For permanent, high-pressure, high-vibration, or…
Instrument valves are the small-bore, precision-machined valves that interface process equipment with the instrumentation that measures and controls it — pressure gauges, transmitters, flow meters, analyser feeds, sample stations. Think of them as the dimmer…
DK-Lok procurement in Malaysian O&G is a documentation question as much as a hardware question. Think of the paperwork as a chain of custody for the fitting itself: the Material Test Report (MTR), the laser-etched…
A double-block-and-bleed (DBB) valve provides two independent in-line isolation seats with a bleed port between them — the simplest mechanical answer to the question “how do I prove this line is isolated for maintenance?” Think…
DK-Lok twin-ferrule fittings (1/4″–1″ sizes) install via exactly 1-1/4 turns of the nut past finger-tight, with the body held by a backup wrench. Smaller sizes (≤3/16″) use 3/4 turn. The rule is rotation count, not…
