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This type of valve is actuated by pressure acting on a piston or diaphragm. The fluid is usually neutral e.g. air, water, hydraulic oil. The pressure range varies and is specified accordingly in a data table.
"Normally Closed" (N/C) valves of this type remain closed under spring pressure, when de-activated.
"Normally Open" (N/O) valves of this type remain open under spring pressure, when de-activated.
When pressure is connected to port "Z" the valves open or close according to type.
A separate 3/2 pilot valve is used to supply pressure to port "Z", it is mounted either directly on the actuator or remotely.
In some cases a 4/2 or 5/2 pilot valve will be required. The main valve position can be N/C or N/O. The basic position is determined by connecting the pilot valve output lines accordingly. (The direction of flow is usually indicated by an arrow or shown schematically on the body).
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ASCO/JOUCOMATIC has developed a wide range of valves for all fluids, whether neutral or aggressive, made out of brass, bronze, cast iron or 316L stainless steel.
Reliability is ensured by:
* A monobloc rod, with stainless steel from the reed to the piston
* Guidance by 2 extra-large PTFE bearings.
Pilot solutions: solenoid valves on valves or mounted on subbases and valve islands.
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PNEUMATIC VALVE 2/2 NC ANGLE HEAD
TECHNICAL SPECIFICATIONS
Media: air - water - steam - light oil
Pressure range : 0 to 25 bar max
Media temperature : -30° to +180° C max
Ambient temperature : -10° to +70° C max
Media viscosity : 600 centistokes max
Pilot media : filtered air or water
Pilot pressure : 4 to 10 bar max
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The new ODE 21IA series is characterized by the angle seat body in stainless steel AISI 316, as all the components in contact with fluids. The angle seat specific body design allows to maintain the fluid flow extremely stable in order to guarantee a high flow values. The auto positioning floating shutter system and the Teflon ring guarantee good seal and reduced leakage over time. Moreover the particular configuration makes the valves resistant as well against fluids with abrasive and chemical contaminants. The standard configuration with flow in direction under shutter allows the execution anti water hammer. It’s available on demand even the version with flow above the shutter for application with gasses and steam.
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Masoneilan's 31000 Series control valve is a PFA lined assembly designed for corrosive applications. It features an eccentric rotary plug design that provides tight shut off and low dynamic forces.
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APPLICATION:
To control the flow of Water, Oil, Air, Gas, Solvents, Brine, Vacuum and any other fluids not reactive with construction materials and free of sediment. Valve operates from zero to maximum differential pressure indicated in table. Valve must be mounted in horizontal pipe with solenoid enclosure vertical and on top.
OPERATION:
Valve opens when energized and closes when de-energized. When the coil is energized the pilot valve opens, relieving the pressure above the piston, which is then lifted from its seat by the plunger. Upon de-energizing the coil, a spring closes the pilot valve and opens a bleed passageway to permit pressure to build above the piston and seat it.
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APPLICATION:
To control the flow of Water, Air, Gas, Solvents, Vacuum and any other fluids not reactive with construction materials and free of sediment. Buna N seating of the main orifice make the valves ideal for TIGHT SEATING, LOW PRESSURE and LOW FLOW conditions. Valve operates from zero to maximum differential pressure indicated in table. Valve must be mounted in horizontal pipe with solenoid enclosure vertical and on top.
OPERATION:
Valve opens when energized and closes when de-energized. In this direct acting valve the disc holder assembly is lifted from its seat by the plunger.
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The Magna Flow Control Valve with an easy to read micrometer dial offers an amazing 1100 precise set points to accurately control flow of gases or liquids. The extremely high CV of the Magna Flow control valve enables very high flows for whatever media is being controlled, up to 200 PSIG pressure or full vacuum. Linear flow characteristics provide easy to set and precise metering of gases and liquids for almost any application where accurate results are required.
Available in either light weight impact resistant nylon or clear polycarbonate construction, the Magna Flow Control Valve offers superior strength and corrosion resistance, making it ideal for use in hundreds of different applications. Simplicity of construction, with removable top and bottom caps, provides easy disassembly for cleaning or maintenance without removing the valve from service. Proven O-ring seals provide a positive zero tight shut-off. Replacement of seals, if required, is quick and easy because disassembly is simple and fast. The Magna Flow Control Valve offers all these features at a very affordable price.
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Description:
The Becker Series CVE & 41005 Globe Valve Regulator’s innovative design makes it among the most versatile natural gas contral valves in the world. Its cage-guided design utilizes multi-interchangeable trim styles, eliminating the need to change body styles. The Becker Globe valve is available with balanced or un-balanced trim for natural gas regulating applications such as pressure and flow control. Body styles provide a choice of flanged, buttweld, or threaded valve end connections.
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ASCO/JOUCOMATIC has developed a wide range of valves for all fluids, whether neutral or aggressive, made out of brass, bronze, cast iron or 316L stainless steel.
Reliability is ensured by:
* A monobloc rod, with stainless steel from the reed to the piston
* Guidance by 2 extra-large PTFE bearings.
Pilot solutions: solenoid valves on valves or mounted on subbases and valve islands.
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TORK T-PV Series ,pneumatic piston valve
application: water,air,steam,gas,natural gas,chimicals,petroleum products,food,sterilazation,water treatment,dyeing,cleaning plant,aggressive liquids,vacuum application,oil,petrol,alcohole,hydroulic liquids,salt solutions,acids,organic solvent
All body is AISI316 Stainless Steel,high flow rate,high quality,compact,suitable vacuum application,normally open and normally closed position.
advantage of TORK pneumatic piston valves:less pressure drop than globe valve,
short open-close time
high flow rate
body and actuator AISI 316
screwed,flanged and welding connection
on-off and proportional control
TORK T-PV Series ,pneumatic piston valve series range
T-PV.S700 Serie; Screwed connection, 1/2"......2" G( BSP ), on request NPT connection..
T-PV.W700 Serie; welding connection, size :from 1/2"......up to 2" .
T-PV.F700 Serie; Flange connection,size:from NW15.....up to .NW50 .
T-G.3W Serie: Solenoid valve,1/4"-3/2 way.it is used on-off control pneumatic piston valves
T-SW Serie: Proximity switch limit switch box ,gives signal when valve open-closed.
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Application
Regulating / hand expansion valves are regularly used at the evaporator in liquid circulation systems. Also these valves are used in liquid circulation systems before a vessel. Here they prevent high pressure fluctuation in the vessel when fluid stream into the vessel.
In order to function as a regulating valve, each NB size has a 'valve-cone' has a unique form. The shape of the cone and the percentage of opening of the valve determines the m3/h flow and/or pressure drop. Use the Revalco selection software to determine the correct valve.
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Compact Poppet Valves
GENERAL:
Inline & Stackable Manifold.
Operation: Internal or external piloted, solenoid pilot or pressure
controlled, high flow poppet valve.
Note: External pilot pressure must be equal to or greater than inlet
pressure to insure proper function.
Mounting: Through holes for mounting.
Materials: Anodized aluminum alloy body, and aluminum alloy top plate. Aluminum alloy poppet with bonded Buna-N sealing surface. Elastomers: Nitrile rubber O-rings.
FEATURES:
- Cost effective
- High flow
- Compact design
- Port Pressure Independent
- Robust construction
- Continuous duty rated
- Ease of maintenance and repair
- Non-Lube service
- Leak tight construction (Series CX)
APPLICATIONS:
- Pulp & Paper - Pulp slurries
- Industrial Mineral
- Steel Mills - Pickling slurries
- Vacuum
- Packaging - Food and chemical
- Leak Test
- Power Generation - Cooling water
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21000 Series
Masoneilan's 21000 Series control valve is a heavy top guided globe valve design featuring noise attenuation and anti-cavitation trim options. It is the most versatile single ported control valve on the market today, well suited to handle a wide variety of process control applications.
41005 Series
Masoneilan's 41005 Series control valve is a cage-guided globe valve design with balanced trim configurations. This product line is engineered to efficiently handle demanding process conditions, including applications with high-pressure drops and large temperature variations.
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Emerson's ACK check valve is a normally closed magnetic check valve that prevents reverse refrigerant flow in liquid lines and compressor discharge lines.
The ABV Refrigeration Ball Valve isolates suction, discharge, and liquid line pipework during maintenance shutdown periods.
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Hayward Needle Valves are used for accurate metering of fluids. Turning the thumbwheel moves a tapered piston into the PTFE seat to control the flow down to a few drops per minute. Precision molded,fine pitched stem threads permit this very fine metering flow control.
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31000 Series
Masoneilan's 31000 Series control valve is a PFA lined assembly designed for corrosive applications. It features an eccentric rotary plug design that provides tight shut off and low dynamic forces.
35002 Series Camflex®
Masoneilan's 35002 Series is the original "universal" control valve, featuring a low friction eccentric plug design, providing excellent throttling control within an extremely compact assembly. The standard design includes an integral bonnet, a direct mounted actuator, and fully enclosed positioner linkage.
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Style 175 GTO Gas Valve
- Permanently lubricated at the factory for maintenance-free service
- Low operating torque - No plug "freezing"
- 100% shut-off; 360° turn or 90° Open Left operation
- Features a superior tamper-proof design
- No leakage to the atmosphere
- One valve covers full pressure range
Designed to meet the requirements of ANSI B16.33 1981, the Dresser® Style 175 GTO Gas Service Valve incorporates the same complementary sealing principles as the Style 175 meter curb valve, yet offers a rated working pressure to 175 psig. Each GTO valve is 100% factory-tested at high and low pressure while in a clear non-corrosive fluid.
Just as the Style 175 meter curb valve, the GTO is assembled at the factory and sealed against tampering by a spring loaded stainless steel retaining ring which cannot be removed with ordinary tools. It is tamper proof as specified in D.O.T. 192.363 Part C.
A plastic ring inserted between the retaining ring and bonnet, plus permanently lubricated port seals, assure low, uniform operating torque, preventing the plug from freezing to the body.
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