What does SWP mean on a ball valve?
It simply means that the valve is intended for use with water, oil or gas, with the exception of combustible gases. Working steam pressure (WSP) indicates the maximum steam pressure that a ball valve can withstand at the highest temperature rating. This might also be marked as SWP, meaning steam working pressure.
What is the difference between wog and WSP valves?
WOG (water, oil, gas) is an older term that is no longer used as frequently as it once was. It simply means that the valve is intended for use with water, oil or gas, with the exception of combustible gases. Working steam pressure (WSP) indicates the maximum steam pressure that a ball valve can withstand at the highest temperature rating.
What does CWP mean on a gas valve?
Cold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20°F to 100°F. This is commonly referenced alongside the valve’s pressure rating. For example, 720 CWP indicates the valve is rated to 720 PSI within the CWP temperature range.
What does Wog mean on a ball valve?
The standards are stamped on the ball valve, ie ANSI Z21.15. For more information on these and other certifications visit our Why You Should Pay More Attention to Plumbing Product Certifications blog. WOG stands for Water, Oil and Gas and is the non-shock pressure rating for valves at an ambient temperature.
How do you read ball valve markings?
Both WOG and CWP refer to the pressure rating of the valve. They are found on the valve body as a number with either WOG or CWP under it. The number represents the pressure rating, ie a 600 with CWP under it would mean the valve is rated to 600 PSI CWP.
What is 600cwp?
600 CWP means 600 PSI Cold Working Pressure Ball Valve mainly used for Water, Oil and Gas and available in Brass material.
What does DN mean on ball valve?
Diameter NominalDN stands for 'Diameter Nominal'. Put simply, it is a rough translation of mm from imperial sizes, assuming that an inch is 25mm. We refer to a 12″ flange as DN300, when in fact it is 304mm. Please use the table below for your reference and if you have any other questions, please ask the Just Valves team.
What does SWP stand for on a valve?
The Steam Working Pressure (SWP) rating, sometimes known as Working Steam Pressure (WSP), indicates the maximum allowable pressure from hot, vaporized water.Dec 11, 2018
What is a globe valve?
A globe valve regulates flow in a pipeline. It is used to control or stop the flow of liquid or gas through a pipe. Globe valves are named for their spherical body shape with the two halves of the body being separated by an internal baffle.
What does dn50 mean on a valve?
For reference, a DN 50 pipe indicates a pipe with an external diameter of 60.3 mm and a wall thickness of 3.65 mm according to EN 10255 (resulting indoor diameter of 53 mm).Feb 18, 2020
What is PN and DN in valves?
Nominal diameter (DN) and nominal pressure (PN)May 24, 2018
What is PN in valve?
Flange Pressure Nominal (PN)
What does WSP mean in valves?
WSP. WSP stands for Working Steam Pressure and defines the pressure of steam in a system that a ball valve can be used in. The industry uses WSP for bronze ball valves because, as the temperature rises, the strength of the material decreases.
Do brass valves have markings?
You may have noticed that brass and stainless steel ball valves have markings on them. These markings aren’t random , they help show what standards ball valves have been tested to and what applications they can be used in. In this blog we will go over the different markings that you may come across when looking at metal ball valves.
WOG (Water, Oil, Gas), WSP (Working Steam Pressure), and PSI (Pounds per Square Inch) are closely-related – but not interchangeable – concepts manufacturers use to describe how much pressure a valve can withstand
Fire sprinkler and standpipe systems feature a wide range of valves, but it’s not always easy to tell if they’ve got what it takes to withstand or control the pressurized air and water running through them.
Force and area define PSI, a basic measurement of pressure
Pressure is a measurement of how force is distributed on the surface of impact. It explains why a sharp knife makes faster and cleaner cuts than a dull one.
WOG and WSP ratings are expressed in PSIG and indicate allowable pressures at a given temperature
For safety’s sake, each valve used in fire protection – from control valves to the trim valves used to drain and test sprinkler and standpipe systems – should be used only at pressures the valve can safely withstand. Often, however, the letters “WOG,” “CWP,” “WSP,” or other abbreviations, along with a number, are imprinted or cast on the valve.
A variety of abbreviations correspond to WOG and SWP, but Cold Working Pressure (CWP) may be the most accurate term to describe pressure limits at standard temperatures
Valve manufacturers rely on a variety of codes and standards that describe everything from the metallic and non-metallic parts that make up a valve to the connections used to secure them to piping. Valves used with domestic water pipelines, compressed air, low-pressure steam, and fire protection systems each adhere to a different set of standards.
Very few NFPA requirements dictate required pressure ratings for fire protection valves
While the National Fire Protection Association (NFPA) offers extensive guidelines for equipment used in fire sprinkler and standpipe systems, it has little to say about the pressure tolerances of most valves.
Listed and approved butterfly, trim, and drain valves with the right pressure
QRFS offers drain valves, test valves, backflow prevention valves, and control (butterfly) valves for fire sprinkler and standpipe systems. We carry many UL-listed valves rated at 175 WOG or higher, suitable for use in aboveground and underground fire sprinkler systems, standpipe systems, and a variety of plumbing and piping applications.
