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Ball Valve
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 1/4" M Thread to Hose Tail Brass Connector Ball Valve  US $3.91
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 M to F Thread Full Port Lever Ball Valve Pipe Connector US $4.72
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 Plumbing 1" x 1" Slip Ends Full Port PVC Ball Valve White US $9.71
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 0.73" Female 0.63" Male Threaded Ball Valve Connector US $5.46
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 1.5" SVF stainless steel manual ball valve US $18.00
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 1.5" SVF stainless steel ball valve for automated control US $20.00
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 1/4" Female PT to 1/4" Male NPT Yellow Tee Handle Ball Valve US $8.20
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 Full Port 5/8" Male Thread Lever Handle Pneumatic Ball Valve US $8.58
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 Industrial Grade ball valve 1" SS US $50.00
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 Blue Lever Silver Tone Branch Water Pipe Ball Valve US $8.38
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 Pneumatic Control Fitting 33/64" Male Thread Full Port Ball Valve US $4.11
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 1/2" Ball Valves US $35.00
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 2 MILWAUKEE 3/4 " SWEAT BALL VALVES US $12.00
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 Female to 15mm Male Threaded Full Port Lever Ball Valve US $4.41
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 20mm Male Thread to 8mm Hose Connector Lever Ball Valve US $4.75
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 F to F 12mm Thread Double Port Red Handle Ball Valve US $4.58
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 13/16" Female Thread to Hose Tail Ball Valve Connector US $4.31
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 Red Level Handle 1/2" Thread to Hose Tail Ball Valve US $4.43
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 16mm Male Thread Pipe Connector Lever Handle Ball Valve US $4.74
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 2 MILWAUKEE 3/4 " I.P.S BALL VALVES US $12.00
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 LOT 6 NEW LEGEND SCH 80 PVC TRUE UNION BALL VALVES 3/4" #201-204 PTFE SEAT NIB US $49.00
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 Mixed lot PVC Ball Valves 3/4" to 1" Schedule 80 US $17.95
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 Compressor Accessory Forged Brass Gas Ball Valve 12mm US $4.67
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Here are some more information for Ball Valve:
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 check valve allows 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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I want to control 2 ball valve actuators independantly?
I have a single air supply from a regulator set at 7 bar. I want to achieve valve actuation by having a 2 position lever switch which is panel mounted and connected to a pneumatic valve. The pneumatic valve is to supply air to the ball valve actuators. When the panel mounted switch is in one position it supplies air to the first actuator (to open it) and with the switch in the other position it cuts off air to the first actuator (so it closes) and operates the other actuator in the same manner as the first. Can this be achieved with a 5/2 valve or would I need some form of pneumatic logic?
Yes.
connect supply to port 1
Valve 1 to port 2
Valve 2 to port 4
3 & 5 are exhausts
See http://www.norgren.com/training/default.asp
& down load VALVES.ZIP
Valves would have to be spring to close!
if they aren't & they are air to open & air to close then:
pipe as follows:
Supply Port 1
Valve 1 to open and valve 2 to close Port 2
Valve 1 to close and valve 2 to open Port 4
3 & 5 still exhausts!
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