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The Best of Industrial Valves & Pressure Gauges 101

Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.

Valve is a device that regulates the flow of gases, fluidized solids, slurries or liquids by opening, closing or partially obstructing various passageways. Industrial Valves are used in a variety of commercial, residential, military applications, and also in transportation. Oil and gas, power generation, mining, water reticulation, sewerage and chemical manufacturing constitute the majority of valves used by industry. These may be operated manually, or automatically, driven by changes in pressure, temperature or flow. Based on the varying needs, valves may be of different types.

• A eck valve llows fluid to flow through it in only one direction. Check valves are two-port valves, that is, they have two openings in the body, one for fluid to enter and the other for fluid to leave.
• Ball Valves are principally designed as on/off isolation valves for a wide range of temperatures and pressures; they have inherent quick opening flow characteristics. Specially designed ball valves however, may offer good flow control capabilities at high pressure.
• Butterfly valves are for quick turn on or shut off applications including agricultural and irrigation, water distribution and waste treatment. Industrial applications including chemical, paper and pulp, and a wide array of industrial mediums.
• Gate valve are commonly used in many garden, irrigation, and industrial flow control systems.

There are a wide range of industrial applications in which Pressure Gauges are utilized. Pressure Gauges are designed to measure the pressure of a gas or liquid. These instruments monitor and indicate the internal pressure and/or vacuum of vessels and systems, especially those having dynamic working characteristics that require regular monitoring.   These vary in style, size, pressure ranges, and wetted parts material, depending on the application. Specialty tanks, such as fire extinguishers and medical gas cylinders use pressure gauges. The important types include:

• Liquid Filled Pressure Gauges can be filled with various fluids, such as silicone oil, mineral oil and glycerin. The liquid filling provides protection to internal components of the gauge in severe environments in which the gauge may endure excessive vibration and pulsation. Gauges made of stainless steel can be used in corrosive environments or in applications that have strict sanitary requirements and are capable of withstanding high pressure cleaning.
• Industrial Pressure Gauges have heavy-duty sensing elements and case designs and higher accuracy requirements than general purpose utility gauges, and are built for extended life, designed for harsh, corrosive environments.

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procedures of hydrostatic pressure test for sanitary sewer system at building contain 3 floors?please advice?

One method is gravity test:

Plug all open pipes and fill the water system until it reaches the highest point of your sewer system. Make sure that there is no leak on plugs and you lock the highest location with your signature on it so nobody can cheat while you are away. Leave it for 24 hours or as specified in the specification. Then check if the water level is the same as yesterday. If there is no change then your sewer system is ok.

Another is pressure test, where you will fill the pipeline with water and pressure up to a specified parameter. When you reach the required pressure, leave it for 2hours or what is specified, then come back. If the pressure gauge drops then there is a leak and you have to check for it. Repeat the procedure until you get satisfied the specs.

One trick i can give you. Drop a golf ball at the highest point and it should come out at the lowest point. If this happens, then you are assured that there is no clogged on your piping and the installer is not cheating. Because sometimes, they plug the middle portion of pipe to accelerate the filling up of pressure or water during the gravity test.

Hope this helps

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PONTE VEDRA BEACH – The Florida Department of Environmental Protection's (DEP) Northeast District Office partnered with the PGA TOUR's TPC Sawgrass to host a free environmental outreach seminar for golf course managers and superintendents Feb. 24 at the club. The seminar was designed to assist golf courses in the region with environmental stewardship, using many of the environmental practices ...

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