Residual pressure valve works?

Residual pressure valve works?
Residual pressure valve can be used in clean room or clean room, indoor and outdoor used to maintain a positive pressure, excess air from the room, to prevent outside air intrusion.
How it works: When the pressure exceeds the standard purification room pressure, valve gate automatically opens when the pressure is lower than the standard, the valve closed state recovery, to balance the pressure. Internal air pressure to prevent the purification room squeeze caused by the noise and the possibility of a burst. Residual pressure valve manifold types There are many different applications have different nuances, welcome to inquire details residual pressure valve.
Residual pressure valve characteristics
1. Installation in the form of a wall-mounted, wall thickness within 30 ~ 50mm can be adjusted.
2. Hammer position can be adjusted according to the amount of wind, pressure requirements.
3. Surface paint or electrostatic spray (spray color is generally white, can also be specified by the user). If other requirements should be stated in the order, according to the user's needs, and manufacture of various specifications. And generally use a differential pressure gauge. Can be custom made according to size.
4. In order to prevent contamination of clean rooms, indoor positive pressure must be maintained, if the clean room pressure is too high, causing the doors easy switch, thus the use of pressure relief dampers to keep the positive pressure clean room. Air flow through the pressure relief damper is generally between 100-1200m3 / h, maintaining the pressure differential between 5-40Pa.

Metal joints on the supporting hydraulic tubing and rubber hose.

Piston pump installed in the hydraulic oil in the tank to soak in the quiet cooling design a scientific purpose, motor driven piston pump, hydraulic oil output, push the plunger movement withhold tanks, resulting in mold base radial contraction, and mold hose fittings on the jacket extrusion. When the contraction reaches a predetermined value micrometer, squeezing automatically stop solenoid valve for backward, reverse movement of the piston within the cylinder, along with open mold, withhold hose complete.
Deduction of the cuttingmachine work order deduction of hydraulic machines
Deduction of the machine, popularly known as crimping machine, crimping machine is a hydraulic hose fittings for withholding pipe assembly of hydraulic equipment, which will be the supporting metal fittings by deduction of the hydraulic pipe crimpingmachine mold shrinkage force exerted by the hydraulic system, withhold solid metal joints on the supporting hydraulic tubing and rubber hose.
Tips
1, dual hydraulic circuit principle of operation, that mouth and contraction movement of the piston back and forth and molds are relying on the power hydraulic power source. Not only does it move smoothly, return quickly, like a spring return, not open and lock the mold phenomenon does not occur. And all around the cylinder locking system design through easy withhold various shaped elbow.
2, the hydraulic system consists of motor, pump, valve, pressure regulator and hydraulic valve with dual hydraulic circuit retreat became a sport, but also in a dual hydraulic circuit from a rapid increase in the oil drain valve, in order to achieve a more rapid return purposes, and the speed is adjustable, noise and system pressure is reduced.
3, in the electrical control system, the control circuit applies PLC circuit, it is easy to repair the circuit, easy maintenance and replacement easy.

Ubiquitous hose crimping machine

Ubiquitous hose crimping machine
Hose crimping machine is all metal connector supporting force exerted by the hose crimping machine shut mold withhold it firmly on the supporting rubber hose. Hydraulic rubber hose assembly has been a lot of other industries have been widely adopted almost everywhere. Use face hose crimping hydraulic hose crimpingmachine more widely, demand is also increasing. So now not only requires the hose crimping machine with high precision, high efficiency, and can withhold a variety of forms, caliber and various layers of steel elbows, flanges, high pressure, large-diameter hose assembly. So the hose crimping machine made more stringent requirements.
Hose crimping machine is a pipe assembly for the withholding of hydraulic equipment, which will be by supporting the contractile force exerted by the metal connector hose crimping machine mold, the metal connector firmly withheld in the supporting construction hydraulic hose cutting machine with high-pressure tubing or car on the brake pipe, oil pipe, air pipe, power pipe.

What is the role of the expansion valve? It works?

What is the role of the expansion valve? It works?
The electronic expansion monoblock valves is a new throttle device, which is controlled by a microprocessor, it appears to achieve a computer direct control and regulation of the refrigeration cycle. Electronic expansion valve and stepper motor type solenoid type two structural forms . Strictly speaking, the electromagnetic coil is a solenoid-type expansion valve. Now we are talking about the current electronic expansion valve usually refers to the stepper motor type. It consists of the valve body, valve, bellows, transmission and pulse stepper motor and other components. Pulse stepper motor drive mechanism, the bellows is a refrigerant passage with moving parts separated to prevent refrigerant leaks. Role of the drive mechanism is rotary motion of the motor into reciprocating motion of the spool. There are two kinds of transmission, gear transmission mechanism includes gear pairs, rib pairs, such as the transmission lever. Direct-acting actuator no gear pair.
Characteristics of electronic expansion valve to regulate large-scale, rapid and sensitive action, adjust precision, stable and reliable. The refrigerant in the electronic expansion valve can be positive, the reverse flow in both directions, avoiding the disadvantages of only one direction of the thermal expansion valve. Refrigeration system can be greatly simplified for the heat pump when. The cooling system is down, the electronic expansion valve can be completely closed, so that no need to install the refrigerant inlet solenoid valve.

Sequence valve works it?

Sequence valve works it?
How it works:
According to the working principle and structure, sequence valve direct-acting and pilot sub-type categories; by pressure control mode, the sequence valve has internal and external control of the points. In the sequence valve installed in a one-way valve, can be called a reverse flow check valve composite sequence valve. Generally, the valve use more.
Functions and applications:
The basic function is to control the sequence hydraulic valve block actuators multiple sequential actions, depending on their functions, called sequence valve, back pressure valves, relief valves and balancing valves. Relief sequence valve performance and essentially the same, but because of the different functions of the sequence valve as well as its special requirements:
(1) In order to achieve accurate actuator action sequence, the order requires high precision pressure regulator valve, the deviation is small;
(2) the accuracy of the order of actions in order to require a small amount of leakage within the aluminium valves is closed;
(3) For one-way sequence valve, pressure loss and requires reverse positive pressure loss values should be compared with the school
       The main role of sequence valve are:
(1) controlling the operation sequence of the plurality of elements;
(2) for packing loop;
(3) to prevent the weight of the free-fall and cause cylinder piston do with balancing valves;
(4) with external control sequence valves do unloading valves, pump unloading;
(5) with internal sequence valve for back pressure valve.

Hydraulic valve

Hydraulic valve
The basic construction of the hydraulic valve manifold including spool, and driving the spool valve within the valve body for relative movement manipulation apparatus. The main form has a spool valve, poppet valve and ball; the body in addition to a body orifice or valve seat and valve fitting hole, there are external tubing into and out of the oil port and drain; actuated valves core in the valve body for relative movement means may be a manually adjustable mechanism, may be a spring or a solenoid, some occasions also driven by liquid pressure. On principle, the use of hydraulic valve spool relative movement in the valve body to control the on-off valve port and the size of the opening, in order to achieve pressure, flow and direction control. www.168fm.cn working hydraulic valve, the valve orifice size of all valves, valve inlet pressure difference between the oil port and through the relationship between flow valve orifice flow equation are consistent with (q = KA · Δp m) , but a variety of valve control parameters vary only.

Hydraulic valve job role

Hydraulic valve job role
1, acting hydraulic valves, types and common; the role of hydraulic flange, types and common; one-way valve, check valve working principle and its application;
2-way valve, check valve works and application; spool type valve commutation principle, spool type valve commutation principle, "bit", "pass", spool function (median performance) and manipulate the way the application; "slide valve function (median performance)," ways to manipulate and use; relief valves, valves, sequence valves
3, relief valve, pressure relief valve, sequence valve, the working principle and application of pressure relay; for Principles and Applications;
Characteristics of the throttle, the main structure and working principle;
  4, the characteristics of the throttle, the main structure and working principle; a typical control valve structure, working principle;

Bsp fitting suitable for most industrial

Bsp americanhydraulicadapter suitable for most industrial applications using bright nickel plated brass compact design, safe and reliable, corrosion in need are equipped with a gasket at the NPT, PT, NPT G distinguish the various threads, PT, G is the tube thread. NPT is the National (American) Pipe Thread abbreviation belonging American standard 60-degree taper pipe thread, for North America. National standards can be found on the National Pipe Thread standard GB/T12716-1991 PT is the acronym is 55 degrees sealing tapered pipe thread, the thread is Wyeth family, and more for Europe and the Commonwealth countries. Water and gas pipes commonly used in the industry, the taper is defined as 1:16. National standards GB/T7306-2000 G is available 55 degrees non-thread sealing pipe thread, the thread is Wyeth family. Labeled G represents cylindrical thread. GB/T7307-2001 national standards can be found in another thread 1/41/2, 1/8 mark refers to the thread size of the diameter, the unit is English?. Insiders often used to refer to the thread size of one? Equal to 8 points, 1/4? Is 2 points, and so on. G is the pipe threads collectively (Guan), 55, 60 degrees are divided into functional, commonly known as the tube round. That thread processing is made by a cylindrical surface. ZG commonly known as Cone, the thread processing by a conical surface made ??of pipe joints in general are like this, Rc GB labeled with metric thread pitch to represent the United States and Britain screw threads per inch number to represent this is the biggest difference between them, metric thread is 60 degrees equilateral tooth type, inch thread is 55 degrees isosceles tooth type, US-made thread 60 degrees. Metric thread with metric units, threaded with U.S. and British Imperial units. Pipe thread is mainly used to connect pipes, its internal and external thread closely, there are two kinds of straight pipe with cone. Nominal diameter refers to the diameter of the pipe is connected, apparently the thread diameter larger than the nominal diameter. 1/4, 1/2, 1/8 inch thread is the nominal diameter in inches.