Valve GuideThe three isolation valves cover overlapping ground, and picking on price alone is how sites end up with valves that leak within a year. A practical comparison by size, medium, pressure and cost.
Read moreBuying GuidePipe is sold by weight while sites think in metres. Here is how to convert one to the other, why Class A and Class B differ by 25% in price, and what to check before you sign a purchase order.
Read moreStandardsLight, medium and heavy class only exists up to 150 mm. Above that you specify OD and wall thickness in millimetres. Ordering the wrong way round is a common and expensive mistake.
Read moreComplianceFour certifications, four different purposes, and four different consequences if you discover you needed one after delivery. A plain explanation of which applies to your project.
Read moreTechnicalSwing check valves slam. Dual plate check valves do not. The physics in one page, and how to specify the replacement without oversizing it.
Read moreTechnicalThree measurements taken with a tape settle the question in two minutes. Here is what to measure and why Table E and ASA 150 will never bolt together.
Read moreValve GuideThe body material gets all the attention while the liner is what actually fails. Match the elastomer to the medium and a butterfly valve will outlast the pipework.
Read moreFire SafetyLanding valve, hoses, couplings, branch pipe, hose reel and cabinet β the full list per point, the ISI standards each item must meet, and the items sites most often forget.
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