Valves Reference Materials

Description: Something is hissing, hammering, frozen, roasted, or short cycling. Another service call is dispatched to that building. If it's not noise, it's complaints about being hot or cold, but the controls ...

Description: Normally selected "line size" to keep pressure drop at a minimum. If desirable to reduce valve below line size, then 10% of "available pressure" normally used to select valve. Usually selected to take ...

Description: When the design of variable flow hydronic systems was initiated 30-40 years ago, very little emphasis was placed on the selection of the modulating two-way coil control valves. The existing valve ...

Description: Valves, such as common globe, butterfly, and ball valves, that performed satisfactorily for constant flow or variable flow primary-secondary systems generally are not satisfactory for primary-only ...

Description: Many times people with a metal piping system are attracted to a plastic valve or strainer because of its low cost compared to a stainless steel or bronze one. And also for all of the benefits plastic ...

Description: Pipe is one of the more common types of plastic product we are familiar with. Pipe is produced by an extrusion process. Basically extrusion can be defined as forcing a material through a die orifice. ...

Description: Hit and Hold Circuits Overview describes an option that customers can use to overcome heat dissipation. ...

Description: On-board pneumatically controlled valves have all the air control lines bused to one edge of the card, and interface through a gasket to a manifold. This makes it simple to create a cartridge carrier ...

Description: A great deal has been written about energy saving architecture and fluid systems, and the results of "green" endeavors are well known. It is now appropriate to look at additional untapped energy and ...

Description: In process industries, valve applications offer many challenges: corrosion, abrasion, pressure shock waves, and temperature shocks, just to mention a few. Less frequently but often with more critical ...

Description: The proper choice of a spraywater control system can save a power plant millions of dollars annually in fuel costs. A utility survey covering fossil generation units determined that a mean heat rate ...

Description: These circuts show a few of the many useful ways to use Clippard Minimatic modular components in practical pneumatic circuitry. The drawings presented here are combinations of ANSI and pictorial ...

Description: The paper presents a new generation of proportional and servo valves with integrated digital electronics. The micro controller allows with its free programmable signal processing options a significant ...