Valves

For a slip-free grip and maximum leverage, follow QRFS’s guide to sizing valve wheel wrenches that turn handwheel valves safely.

A wide range of standards govern the construction and use of valves—so, can angle valves designed for one purpose be used for another? QRFS looks at angle valves in fire protection, HVAC, plumbing, and beyond, discussing their construction, manufacturing standards, and suitability for various applications.

Closing or opening a valve can cause a sudden surge in pressure, threatening water-based systems and the people who work around them. QRFS explains the phenomenon known as water hammer, describing what is, how it works, and how it impacts firefighting and the design of fire protection systems.

Fire safety valve pressure ratings matter when choosing a valve for fire sprinkler and standpipe systems. QRFS reviews the differences between more than ten common terms manufacturers use to describe valves’ pressure ratings, including WOG (Water, Oil, Gas), WSP (Working Steam Pressure), and PSI (Pounds per Square Inch).

Grooved butterfly valves and wafer butterfly valves both control flow in fire sprinkler and standpipe systems — but is there a reason for choosing one over the other? QRFS looks at the features of different butterfly valves for fire protection, including guidance from the National Fire Protection Association.

Why would a fire protection system need to be drained? This article discusses four common reasons and details the various types of drains necessary for safely draining a fire sprinkler system. Included is a detailed breakdown of the primary drain valves in a sprinkler system: main drains, auxiliary drains, sectional drains, test drains, and more.

In fire sprinkler and standpipe systems, trim valves help make inspection, monitoring, and testing simpler. QRFS looks at trim valves for fire protection, providing an overview of what they are, how they function, and what the NFPA says about these helpful devices.

Learn how a check valve works, the types of check valves, and their benefits. Additionally, understand what components you should look for when selecting a check valve and their maintenance requirements.

In this article, we’re going to teach you how to use a valve wheel wrench to loosen a difficult valve. We’ll take a look at the valve wheel wrench itself to get a better understanding of what it is and what sets it apart from other wrenches.

In this article, we’ll look at the Test and Drain to uncover its benefits, uses, and features. We’ll explore relevant NFPA Code so we can help you put their suggested rules and guidance into perspective and understand why it matters to you!