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Valves

The tips on maining a foot valve

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These are just some of the important tips in maintaining a foot valve. Of course
prevention is always the better decision so even if these devices are pretty much low
maintenance, always keep a routine maintenance check up.

A foot valve may have one of the loneliest jobs in the world but it is one of the most
important parts of a plumbing system, especially for household or commercial uses. These
devices are usually dropped in a well and are connected to a suction pipe connected to a water
pump. Even if it does little, it saves a lot of money and makes sure that the water being
supplied into a household is efficient and constant. What it simply does is keep water from
flowing back into the well, keeping the lines filled with water and the water pump primed at
all times. This is important because a pump cannot run dry or else it would break and cost
hundreds or thousands of dollars.
Even for a device this small, it is always best to maintain these valves properly. Here are
a few tips on maintaining a foot valve to ensure that it is working at its best at all times:
1. Always check for debris in the strainer
These valves come with an attached suction strainer to keep out any foreign materials
from coming into the suction line and preventing it from clogging it up or ruining the water
pump. Since a foot valve sits at the bottom of a water well, sediments may get sucked in along
with the water. This can cause the valve to stay open as well, letting the water flow back.
Regular checking of the valve is a must to ensure that the strainer does not get filled or
clogged with debris. This would also ensure the efficiency of the water flow into the pump.
2. Always check for signs of corrosion
Since these valves deal with fluids all the time, they would tend to get corroded or show
signs of material fatigue during its use. Signs of corrosion can lead to the valve
malfunctioning or leaking. With corrosion, it may stop the valve from either letting in fluids
or letting fluids leak back into a tank or well when the pump is turned off. This may cause a
lot of damage to the entire pumping system which can cost hundreds of dollars. In the event
that the foot valve is already broken,parts of a foot valve are readily available in most
hardware stores, especially for large foot valves.
3. Always make sure that the bottom of tank or well is clean
These valves sit near the bottom of tanks or wells and this is where sediments
commonly reside as well. There are many valves though that can be used for heavy debris environments but it is still always safe to prevent any debris from entering the valve. This can
cause its life span to shorten. Always monitor and check for reservoir cleanliness to ensure the
efficiency not just of the valve but of the entire plumbing system.
These are just some of the important tips in maintaining a foot valve. Of course
prevention is always the better decision so even if these devices are pretty much low
maintenance, always keep a routine maintenance check up. This can ensure that the entire
system will be able to have a longer life span.

I manage the editorial affairs for MONETA Tanıtım, which produces specific publishing, specially for the sphere, Turkey industry. We work for content development through digital and print media, with a new generation, dynamic publishing intellection.

Valves

Sampling Ball Valve…a special design for special demands!

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Sampling valves are commonly used in various industries, everywhere from chemical plants to food industries. It is a type of valve that allows taking a sample of a  fluids (either liquid or solids) so it can be tested for its quality. Main purpose for such valves is quality control. This also applies for the sugar industry: Sampling valves are being used at the vacuum pans in sugar factories/refineries where the quality of the sugar juice is being tested for its pureness. 

When the sugar is obtained from the thick juice (sugar content 65–80%) by repeated crystallization at elevated temperature and negative pressure, the intermediate product is called “magma”, which is a mixture of thick juice and granulated sugar.

During the crystallization, a crystal suspension is created in the “vacuum pans”. The boilers are heated with vapors from the evaporation station and are under vacuum to ensure energy-saving evaporation of the water at low temperatures. This means the clarified juice must be evaporated for the sugar to crystalize. The vacuum pans are big vessels where the syrup is boiled under vacuum, and since they are under vacuum, it is very important to install a sampling valve that can fulfill this vacuum-resistance. Airpower Europe has come up with the idea of this sampling ball valve upon request from various sugar factories, where the sampling process was rather problematic due to the difficulty of taking clean samples. 

For this purpose Airpower Europe GmbH has designed a special sampling ball valve  that is being used and appreciated by many sugar factory workers worldwide.  Today this sampling valve is being used in sugar factories in Germany, Mexico, Cuba, Guatemala, Turkey, Pakistan, Poland etc. It consists of a 3 piece stainless steel ball valve, with a closed ball on one side. Nominal diameter is DN50 with a pressure range of PN40. Temperature range is from -10°C to +200°C.  The operation of the valve is being handled through a hand lever. For further information please contact Mr. Murat Erol at m.erol@airpower-gmbh.com or feel free to visit our website www.airpower-gmbh.com

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Plumbing Automotive Equipments

Proportional valves with linear motors in the medical industry

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The Precision Fluidics Division of Parker Hannifin, the global leader in motion and control technologies, announced the release of their new Parker LM-Pro linear motor proportional valve targeted at the respiratory and anaesthesia markets.

“The Parker LM-Pro miniature proportional valve utilizes a patent pending linear motor actuation technology to enable flow up to 540 slpm in a very compact and energy efficient package, while providing an unparalleled, controllable range to allow for use across multiple respiratory applications,” says Beth Young, division marketing manager at Parker Precision Fluidics.

A critical feature of the LM-Pro valve is the valve’s linear motor actuation technology that provides exceptional resolution over a longer stroke and lower power consumption than traditional solenoid or voice coil actuation designs. With a linear controllable flow range from 0.5 to 540 slpm, pressure capability up to 100 psi (6.9 bar), and typical power consumption of less than 2 Watts, the LM-Pro valve enables very precise flow control throughout the full performance range of the valve. The LM-Pro valve allows for simple, closed loop feedback, giving the customer precise pressure or flow control. This ensures accurate and safe delivery of precise gases to patients, from neonates to adults. Typical applications will have power usage of less than 2 Watts, giving the customer longer battery life or ability to use a smaller battery to save size and weight. Typical hysteresis of <10% (full scale), coupled with a fast response time of <20 msec (full cycle), give the customer the ultimate in low and high flow rate and precision control proportional valve performance.

The Parker LM-Pro is a true, one-size-fits-all, proportional valve. Its unrivalled performance capability combined with the simplicity of a face mounted/ported design make the LM-Pro valve an ideal solution for varied applications with dynamic flow control needs. “It is ideal for customers who are trying to increase performance while continuing to decrease the footprint of their products,” says Paul Nierman, division engineering manager at Parker Precision Fluidics.

As systems become smaller and more portable, power concerns and accurate flow control at both the high and low ends of the spectrum are vital. The Parker LM-Pro linear motor proportional valve is a great example of the portfolio of products at the Precision Fluidics Division of Parker Hannifin that lead the market in miniature, low power, light weight, high performance fluidic products.

Visit the link to find more information of the Parker LM-Pro linear motor proportional valve:  https://discover.parker.com/LM-Pro

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Valves

Airpower Series 35 Double Eccentric Butterfly Valves

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The Series 35 Double Eccentric Butterfly Valves also known as High Performance Butterfly valves from Airpower Europe GmbH are generally used in the sugar industry where you require valves resistant to higher temperatures or also in the cogeneration facilities, pulp and paper, chemical etc.

They are characterized by their long-service time, low maintenance and reduced friction between seal and the gasket. The airpower Europe GmbH Series 35 valves are available from DN50 (2”) up to DN1000 (40”). The body is made of Ductile Iron GGG40 (EN-JS-1030) (EN-GJS-400-15) but can also be offered as Stainless steel 1.4408 version (CF8M) or carbon steel A216 WCB.
The disc is offered as a standard in the stainless steel CF8M version. Alternatively, it can be offered as well with 304 stainless steel or Ductile Iron 1.0619 discs. The media temperature for the body coatings is -30°C up to +200°C for RPTFE. 

The body length is in accordance with API609 and the mounting flange standard is ISO5211. For all nominal sizes the bearing is maintenance-free. The bearing is for exact centering of the disc. The valve disc itself is double eccentric mounted. 

All sealing surfaces are machined. Major advantages here are the low torque value and the low wear.  The bolt itself is secured by a locking plate. An additional sealing ring ensures that the inner area of the bolt is protected against dirt and liquids.

 The seat ring inserted with a positive fit ensures absolute tightness and compensates for wear. Replacement is possible without disassembly of shaft and disc. The removable retainer ring protects against abrasion and erosion whereas the continuous shaft ensures high stability. The Series 35 double eccentric butterfly valves can be combined with twintorque series pneumatic rotary actuators from airpower Europe GmbH, either single or double acting type. 

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