Products/Services for Zero Leak Hydraulic Ball Valves
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Ball Valves - (2115 companies)...force and temperature, creating a potential leak path at the joint. Image Credit: www.mengnite-valve.com Three-piece Three-piece ball valves offer easy and fast access for valve maintenance. The three-body connector can be removed... -
Hydraulic Valves - (684 companies)Hydraulic valves contain and transfer the flow and pressure of hydraulic fluid in hydraulic power systems. They range from simple shutoff valves to precision control valves. In their unpowered state, hydraulic valves can be normally open (open... -
Solenoid Valves - (1022 companies)Solenoid valves are devices that use a solenoid to control valve activation. They are considered electromechanical control devices used to control liquid or gas flow. An electrical current runs through a coil to control the valve by moving a plunger... -
Check Valves - (1952 companies)The mechanics of check valve operation are relatively simple. Most check valves contain a ball that sits freely above the seat, which has only one through-hole. The ball has a slightly larger diameter than that of the through-hole. When the pressure behind... -
Butterfly Valves - (1270 companies)...little resistance to flow. These valves offer a rotary stem movement of 90 degrees or less, in a compact design. Unlike ball valves, butterfly valves do not have any pockets in which fluids may become trapped when the valve is closed. The valve operation... -
Control Valves - (1646 companies)...as throttling valves to control flow. Ball valves provide tight shut-off and control. They have high rangeability due to the design of the regulating element, without the complications of side loads typical of butterfly or globe valves. Plug control...
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Air Valves - (794 companies)...extending across the diameter of an orifice. Quarter turn valves will be in their fully open or fully closed state after a 90 turn of the stem. Types of Air Valves. There are many types of air valves. Ball valves provide tight shut-offs...
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Pressure Relief Valves - (1007 companies)With many of these designs, a helical or hydraulic pressure spring is used to maintain constant force acting on the backside of the valve disk or diaphragm, causing the valve to be normally closed. When the force exerted by the process stream (i.e. fluid...
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Diaphragm Valves - (423 companies)...are better at throttling than straight though diaphragm valves because the design's large shutoff area along the seat gives it the characteristics of a quick-opening valve. The diaphragm acts as the gasket of the valve to seal against leaks between...
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Packing Hooks and Extractors - (30 companies)Packing hooks and extractors, also referred to as packing pullers, are tools that extract used packing material from pumps and valves. Packing hooks and extractors, also referred to as packing pullers, extract used packing material from pumps...
Product News
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Lee Co. (The)
LEE SHUTTLE VALVES is required from the main hydraulic system. Detented & Zero Leak Detented Shuttle Valves. In both types of detented shuttle valves, the poppet is mechanically latched to close off either the A or B port. This is typical of brake systems where bi-directional flow may be required between B and C. A zero leak version of the detented shuttle valve is available for use with gas emergency systems. Detented shuttle valves are also of the "non-interflow " type (per MIL-V-19068), which is a common... (read more) -
Lee Co. (The)
LEE PRECISION RELIEF VALVES offer both linear and stable operation with minimal hysteresis. Both valves are available with cracking pressures from 50-500 psid. Zero Leak PRI This 0.281 " diameter valve is ideal for thermal relief and low flow hydraulic pressure relief applications where zero leakage is needed. Available cracking pressures range from 800 to 4700 psid. High Pressure PRI These 0.281 " and 0.375 " diameter relief valves are designed for applications where operating pressures and pressure spikes are too severe... (read more)Browse Pressure Relief Valves Datasheets for Lee Co. (The) -
Lee Co. (The)
281 Zero Leak PRI® Pressure Relief Valve The 281 Zero Leak PRI (R) is a new pressure relief insert for thermal relief and low flow hydraulic pressure relief applications where zero leakage is needed. Weighing only 6 grams, typical flow rates range from a few mL's per minute for thermal relief applications, and up to 0.5 GPM for low flow pressure relief applications. Working temperature is -65 F to +275 F and the cracking pressure is preset at the factory with capabilities ranging from 800 psid up to 4700 psid. Each Zero Leak PRI... (read more)Browse Pressure Relief Valves Datasheets for Lee Co. (The) -
Plast-O-Matic Valves, Inc.
Pneumatically or Hydraulically actuated ball valve Air Actuated Ball Valves. Double acting Air x Air or Fail-safe Air x Spring actuators designed for corrosive service. Options include Limit Stops, Limit Switches, and Electro-Pneumatic Positioners. 3/8 " - 4 " valve sizes, 2-way and 3-way. Manual Ball Valves. Air Actuated Ball Valves. 2-Way Air Actuated Ball Valves. 3-Way Air Actuated Ball Valves. Electro-Pneumatic Positioner. Electrically Actuated Ball Valves. Air Actuators. Electric Actuators. Angle Cut Flow Control Balls Manual or Actuated... (read more)Browse Ball Valves Datasheets for Plast-O-Matic Valves, Inc. -
ValvTechnologies, Inc.
Metal Seated Ball Valve; longer life, zero leakage V1-1: 1/4-4 ", 900-4500# Longer Service Life. Absolute Zero-leakage. Primarily used in severe service applications, V1-1 valves are manufactured to each customer 's unique specifications. The flagship of the ValvTechnologies ' product line, the V1-1, is the valve by which all other severe service metal-seated ball valves are measured. The V1-1 design includes integral seats, RiTech (R) hard coatings, blowout-proof stem and live-loaded packing. The V Series ' proven seat supported design... (read more)Browse Ball Valves Datasheets for ValvTechnologies, Inc. -
MAIN Manufacturing Products, Inc.
Eliminate Leak Points with Hydraulic Flanges You 're someone who wants the best hydraulic system design without needing excess adapters. Good thing MAIN Manufacturing 's reducing flanges are stocked in a large range of sizes. Reducing flanges eliminate leak points and save you money. Made in the USA, reducing flanges allow you to go from a larger flange pad size to a smaller port size with just a single flange. Gone are the days of that Christmas tree look and numerous leak points, adapter cost, and assembly costs. Most reducing flanges... (read more)Browse Hydraulic Fittings Datasheets for MAIN Manufacturing Products, Inc. -
Shenzhen Jewellok Technology Co., Ltd.
Pneumatic Actuated Ball Valves . Type: Ball valve. Pressure Rating: 1000 / 3000 psig. Materials. Body: 316. seat: PTFE. Temperature range: -54? to 148?. Leak rate: 0.1std cc/min@1000psig(69bar)N2. Orifice: 2.4~10.3 mm(according to end connections)... (read more)Browse Ball Valves Datasheets for Shenzhen Jewellok Technology Co., Ltd. -
Bonomi North America, Inc.
High-Pressure Ball Valve & Automated Valve Package Bonomi North America Introduces High-Pressure Ball Valves And Automated Valve Packages For Hydraulic Applications. Bonomi North America is introducing a new line of high-pressure carbon steel ball valves for use in hydraulic applications. The new valves come in two-way and three-way configurations with a choice of NPT or SAE thread end connections. Both the two-way valves (3200 Series NPT/3300 Series SAE) and the three-way valves (3400 Series NPT/3500 Series SAE) are available in 3/8-inch... (read more)Browse Ball Valves Datasheets for Bonomi North America, Inc. -
Zhejiang Lisheng Spring Co., Ltd.
Wave Springs for Ball Valve Sealing Reliable Sealing Support for Ball Valves. In ball valve systems, maintaining consistent sealing force under pressure, temperature variation, and wear is critical to prevent leakage and ensure long-term performance. Wave springs provide a compact and efficient solution for stable seat loading. Key Functions in Ball Valves. Seal Preload. Applies continuous axial force to keep the valve seat tightly pressed against the ball, ensuring reliable sealing over time. Thermal Compensation. Absorbs... (read more)Browse Compression Springs Datasheets for Zhejiang Lisheng Spring Co., Ltd. -
Jinshiling (Heyuan) Technology Co., Ltd.
PTFE Sealed Ball Valve Seats applications. Precision Manufacturing: CNC machining ensures close tolerance and consistent fit, suitable for diverse climates and fluid types. Application Support: Customizable sizes and configurations with engineering support to meet specific operational needs. Usage Background: These PTFE ball valve seats are ideal for chemical processing, fluid handling, and industrial systems where reliable sealing and chemical compatibility are critical. By preventing leakage and reducing torque, they help... (read more)Browse Fabricated Plastic Parts and Semi-Finished Shapes Datasheets for Jinshiling (Heyuan) Technology Co., Ltd.
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Experimental investigation and hydraulic simulation of dynamic effects on diesel injection characteristics in indirect acting piezo-driven injector with bypass...
… actuator piston with spring flapper nozzle valve mass with friction and ideal end stops piston ball poppet with conical seat hydraulic volume with pressure dynamics fixed hydraulic orifice with zero volume source piecewise linear hydraulic pressure source leakage and viscous friction poppet …
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Hydraulic system
hydraulic capacity 71, 81 hydraulic power 112 Hydraulic press 41 hydraulic diameter 56, 196 hydrodampers … … 114 hydrostorages 253 hydrotesters leaky loss 67 296 initial … … ratio 165 piston slide valve 212 piston accumulators 260 … … 401, 407, 417, 421 ball valve 205 cooler 275 … … 415 secondary current filtering 289, 292, 300 neutralization number 31 Newtonsche liquid 17 zero stroke control 368 …
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The Motor Car
… the valve opening phase (Fig.10.30a) the cam acts on the tappet, and, as a consequence, on the piston, thus pressurizing the oil in the plunger internal chamber (6) owing to the closing of the ball valve (4) which acts as … With this configuration the plunger provides the valve opening despite the minimum leakage between the piston and … When the valve closes (Fig.10.30b) the hydraulic tappet allows the tappet to be always in contact with the cam, thus zeroing the valve lash and the noise, but allowing a correct valve closing under the trust of its springs.
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Advances in Engineering Design and Optimization II
Hytar Co. Ltd. in Finland, Tampere University of Technology, Hauhinco and Tiefenbach Co. Ltd. in German developed ball seat water hydraulic proportional valves , and the rated pressrue is 31.5 MPa. The poppet structure and relevant processing technique are pivotal in decreasing the leakage or achieving nearly zero leakage.
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Experiments on Compression Ignition by Air Injection (CIBAI) in a Modified Single-Cylinder, Four-Stroke, Spark Ignition, Cooperative Fuel Research (CFR) Engine...
The solenoid valve, three-way ball valve , cooling system, and their corresponding plumbing were assembled, and a hydraulic test was taken to detect possible leakages . … conclude the engine preparation, the engine was motored, the pressure transducer (PT) was zeroed , and the in …
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Advanced Modeling of Common Rail Injector Dynamics and Comparison with Experiments
Figures 7, 8, 9 and 10 describe the model network of A-hole_ ball - valve connections and needle-seat_nozzle-hole connections. The basic equation of the zero -dimensional model is the mass conservation equation for a generic capacity … The fluid leakage flow rate has being computed by using the expression for laminar hydraulic resistances in annulus cross-section: where b is the leakage perimeter, h is its height, l is its length and μ is the dynamic viscosity.
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Hydraulic Relief Valve Problems and Design
The valve can be made to hold without leakage initially but, as the seat starts to peen or the ball becomes marred, it will relieve at lower pres-sures, resulting in inadequate pres-sure for the work to be done. Fig. 3 is an oscillograph record of hydraulic pressure as a ball-and-spring valve relieves. … to left, the speed of response; i.e., the lapse of time from zero pressure to full …
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Equipment Manufacturing Technology
For this reason, the leakage in a water hydraulic valve will be ten or a hundred times as the same specification in oil hydraulic valves with the same sealing clearance and pressure difference. The linearity of spool valves is superior to poppet valves such as ball seat valves. … structure and the relevant processing technique are pivotal in decreasing the leakage or achieving nearly zero leakage.
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Reduced Friction for a Four Cylinder Two Valve Otto Engine Valve Train
This zero -lash condition ensures that the valve begins to open at precisely the same time during each valve event. The hydraulic pivot end consists of a body unit, which screws into the cylinder head, and an … A ball -check valve and retainer attached to the plug sealing the supply chamber in the base … … between the plunger and pivot-post cylinder walls is designed to provide controlled leakage of oil from …
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ISA CNTRL VALVES - Control Valves
Automated on-off valves are typically manual-type ball , plug, wedge, butterfly, or gate valves with special features (such as a mounting bracket that bolts to the valve body) that allow the addition of a pneumatic, electric, or hydraulic operator. The initial leakage rate through the seat must be acceptable for the application (which in most cases is termed “ zero ” or “bubble-tight”).
