Technical Articles
RuB, Inc. has published these technical articles:
(Valves)
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All screwed end RuB ball valves have male or female NPT pipe threads which are made in strict accordance with ANSI/ASME B1.20.1. The following data is extracted from that specification....
(Valves)
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Why cast brass or cast bronze valves are usually made heavier than forged ones....
(Valves)
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TECHNOGRAM 09 - Comparison of Valve Body Materials....
(Valves)
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As you can imagine, there are special specs covering valves and piping which handle hydraulic fluid for hydraulic elevators. ASME A17 and Rule 1302.5a are two that we have encountered. If the customer...
(Valves)
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As the use of E85 Fuel spreads we are getting increasing inquiries about the compatibility of RuB valves with this fuel. Ethanol E85 is roughly 15% gasoline and 85% ethanol (ethyl alcohol)....
(Valves)
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Occupational Safety and Health Administration ("OSHA") regulations include one section (Part 1910.147) which deals with safe means for de-energizing and "locking out" machines and equipment so that...
(Valves)
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As the natural gas distribution industry switches from the traditional iron plug valves to brass ball valves some gas utilities have expressed concern that the brass valves will cause galvanic...
(Valves)
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One of the key advantages of a ball valve over older types (such as conical plug valves, which are the traditional valve used for gas meter sets) is that the ball valve seals absolutely bubble-tight...
(Valves)
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RuB forged brass ball valves have handle nuts according to the following table....
(Valves)
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As RuB is selling electric actuators, and electric solenoid valves for our pneumatic actuators, the question of NEMA (National Electrical Manufacturers Assoc.) ratings comes up....
(Valves)
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There are several different measurements of pressure which we encounter from time to time. This technogram will explain them, and give their relationship to each other so you can convert from one to...
(Valves)
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The most frequently asked question about RuB valves is "what is meant by the marking '600 CWP' on the valve bodies?" Although CWP has been the preferred marking on valves and fittings for about 60...
(Valves)
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RuB ball valves are approved under several different specs, each of which requires us to put certain markings on the valve....
(Valves)
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In systems where fluids are carried in copper tubing (rather than in steel pipes) the
normal manner of connecting the tube to valves or fittings is soldering. However the
strength of these connections...
(Valves)
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RuB manufactures a variety of pipe threads, American and international, male and female, long
and short. To understand the differences, and to help you answer customer questions or inquiries
for...
(Valves)
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RuB standard ball valves are excellent for vacuum service. They can be used for vacuums down to .0008 inches of mercury. A pretty low pressure! Not exactly outer space, but getting close!...
(Valves)
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RuB ball valves have a unique feature which gives them substantial performance advantages over many other ball valves. The lip portion of the teflon® seats in all RuB ball valves is free to flex....
(Valves)
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Many people in the valve business are confused by two specs commonly used for stainless steel valves - CF8M and 316. The confusion is compounded because people often use "316" when speaking of...
(Valves)
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RuB uses five different stem packing designs on its different brass ball valves. The most important distinction between these is the sealing material - which is either PTFE or FPM....
(Valves)
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RuB ball valve styles which use teflon stem seals (s.40, 42, 70, and 92) are rated at 150 psi WSP (Working Steam Pressure). But our valve styles which have FPM (like DuPont Viton®) stem seals...
(Valves)
From this Article:
Although the vast majority of ball valves are simple 2-port valves, there is a market for multi-port valves too. In certain types of industrial application they offer advantages over the straight...