Gas control valve's continuous loop

1. A continuous loop Gas Control Valve positioning plate cable fault locator board and control board is disconnected cables, fault or short circuit. Such as persistent cycle time over two minutes, the gas control valve to stop the rotation, and displayed on the screen -E1- and blinks. 2. Locate the board is damaged gas control valve leakage, corrosion, or the Hall element positioning plate full damage, leading to not be located. 3. The magnet damage of Gas Grill Control Valve or damage to the magnet magnetic insufficient, and the Hall element is positioned plate can not produce a signal. Magnets can not be used in strong vibration or strong magnetic fields such as environment.

The problems of gas heater valve in working process

gas heater control valve does not operate a) the system does not run A, flow-type softening valve, run the flow is set to 0. B, automatic filter Gas Grill Control Valve in the F-00 to F-01 or greater. "Run" position C, the positioning plate of the Hall element is damaged. The main cause of valve leakage. D, F78 distribution valve gas heater control valve inlet or drain plug. Automatic gas heater control valve does not operate A, main board failure. B, motor, motor control board is connected with the motor pinion or transmission damage, leading to the terminal large gear on the motor can not drive the spool rotation. C, with a hand on the handwheel Gas Control Valve, such as F63, F67, F68, intermediate gear and motor gear or gear wheel slip terminal. D, water quality is poor, resulting in a large resistance between the sealing sheet, the motor does not move with. E, the valve is stuck between objects or large gear motor gear and terminal objects resting motor with fixed. F, a foreign body water, damaged or stuck valve. G, the water pressure is high, the motor does not move with.

Gas heater control valve does not work

1. softener or Gas Control Valve no longer a student), the controller can not control the rotation of the motor A, the gas heater control valve power interruption: damage to equipment failure or power adapter (no display screen). If no power but no display screen, can be used the same type of power supply for testing; now Run the new Propane Control Valve mainly uses two types of power adapters, output voltage and current are DC12V, 1500mA and DC24V, 1500mA. B, motor and motherboard cable shorted. Water immersion or valve leakage control panel, this phenomenon can occur when such installation. C, the motherboard is damaged and can not control the rotation of the motor. D, motor damage. Mainly caused by patio heater control valve leakage. 2), the regeneration time setting unreasonable time or flow regeneration program shows yet to come, but the actual water hardness has been exceeded. A, time type, the regeneration time is set incorrectly, exceed the maximum of water softener system cycle. If this should be renewable once for two days, is set to 20 days renewable once. B, flow type, the total flow is not cut down or decreasing slower than the actual speed, the meter is damaged, no instantaneous flow. For two main reasons: ① suck iron impeller is stuck or foreign body material, can not be rotated. ② meter meter cord is damaged or loose with the motherboard socket. ③ control board failure. 3), the motor can not control spool rotation.

Performance comparison gas heater control valves and hydraulic valves

  Energy may be different pneumatic components and devices Pneumatic gas station method (a) use, depending on requirements and control points to adjust their working pressure Gas Heater Valve. Hydraulic valves are equipped with the return line to facilitate the collection of used hydraulic oil tank. gas heater control valve can be directly compressed air to the atmosphere through the exhaust port. (B) leakage of hydraulic Gas Control Valve for the different requirements of outward leakage demanding, but a small amount of leakage of internal components is allowed. gas heater control valve, the valve seal in addition to the gap, in principle, allow the internal leakage. Internal pneumatic valve leak there is a risk of accidents. For pneumatic tube, it allows a little leakage; leaking hydraulic pipes will cause the system pressure drop and pollution of the environment. (C) for lubrication requirements of different hydraulic system working medium for hydraulic oil, Gas Heater Control Valve there is no requirement for lubrication; pneumatic system working medium is air, the air without lubrication, so many pneumatic valves require mist lubrication. Gas heater control valve parts should be the choice of materials less susceptible to water corrosion, rust, or to take the necessary measures.

Installation Precautions gas heater control valve

Installation Precautions high pressure Heater Gas Valve
(1) hose in a mobile or stationary, and can not bend over, it can not be bent at the root, at least to start bending at 1.5 times its diameter;
(2) hose moved to the extreme position not pull it too tight, should be more relaxed;
(3) try to avoid the hose twisting deformation;
(4) hose as far as possible away from the heat radiating member, fashion necessary insulation boards;
(5) Avoid hose external damage, such as the use of the same long-term friction surface of the member;
(6) If the hose caused by excessive weight deformation, should support members.
Pre-installed piping
1 Introduction pipeline
(1) two-director and branch Gas Control Valve: From lubrication pump out until all the oil inlet distributor, relatively high under pressure. Usually cold drawn seamless steel gas heater valve, the material is 10 or 15 gauge steel. Severe corrosion of the pipe must not be used;
(2) to the pipeline: from the distributor to all lubrication points out the inlet (bearing hole), under pressure is relatively low. Usually drawn copper, easy to bend when the gas heater control valve. There is also cold drawn seamless steel or stainless steel pipe;
(3) the use of hose fittings encountered active site connections.
Piping layout requirements
(1) gas heater valve to try to avoid the heat radiation and cooling water temperature is too high or too low, such as spraying of the Department, particularly hose fittings;
(2) piping and other equipment should not affect the operation of the host, to be safe, reliable, easy to work, observations, maintenance;
(3) To smooth vertical and horizontal piping, neat appearance. As little as possible, or small-angle bend elbows, using a large arc, thus reducing oil flow resistance;
When the conflict (4) installation occurs, a small tube let bassoon, low-pressure Gas Heater Control Valve so that high-pressure pipe;
(5) the pipeline can not be contacted at the intersecting should spaced;
(6) parallel pipe joints should be staggered installation, to avoid affecting the installation and removal;
(7) In order to facilitate disassembly pipeline cleaning, the union should be properly installed, but to use less, reducing the possibility of leaks.

Regulating valve technology of routine maintenance

In the soda ash production systems, increasing the degree of automation. The valve as an automatic control system actuators, has an important role in stabilizing the production, optimal control and so on. With a long-cycle, high-load operation, the control valve jam, corrosion, vibration, internal leakage and other problems continue to occur, resulting in shorter Gas Water Heater Valve regulating the life, work reduced reliability, seriously affecting the plant safe and stable operation. Therefore, the need for timely and accurately find and fix faults in the routine maintenance is very important, lists some common symptom and treatment methods. For reference only;

A regulating valve leakage
1, the drain valve stem length discomfort.
The reason valve leakage: gas open valve stem and valve stem is too short too long, stem up (or down) the distance is not enough, resulting in a gap between the plug and seat, not full contact, leading off lax internal leakage.
Solutions: should be shortened (or extended) valve stem to stem the appropriate length, it is no longer endoleaks.
2, packing filler leaked leaked reasons: after (1) Fill the stuffing is loaded into close contact with the stem, but this contact is not very uniform, some parts in contact with loose, tight contact with some parts, and even some parts did not contact on. (2) there is a relative movement between the stem and packing, as the impact of high temperature and pressure and permeability of the medium, resulting in packing leak. (3) the contact pressure is gradually attenuated filler, the filler itself and other reasons, the medium will leak out from the gap.
Solutions: (1) In order to facilitate the filler loading, chamfer at the top of the stuffing, the stuffing is placed at the bottom of the gap erosion resistant metal protective ring of small to prevent the filler is medium erosion. (2) packing box and packing contact surface should be smooth, reduce packing wear. (3) use of flexible graphite as a filler, which has good air tightness, low friction, small deformation, friction does not change after re-tightening and other characteristics.
3, the valve spool core seat deformation leak.
Spool valve leak valve production was mainly due to the process of casting or casting defects can lead to enhanced corrosion and erosion-corrosion medium through the fluid medium will give rise to the valve seat material erosion and impact, resulting in valve, valve seat deformation (or wear) is not complete, there are gaps, leaks.
Solutions: valve, valve seat corrosion-resistant materials. Worn deformation is not serious, can be used fine sandpaper grinding, eliminate traces improve the finish. If severe deformation, only replace the Gas Control Valve, the valve seat.
Second, the positioner fault locator is to use nozzle flapper technical principles, the general failure often occurs following:
1) Parts affected by temperature, vibration, resulting in mediation valve fluctuations.
2) The nozzle is clogged foreign material, the locator does not work.
3) The spring constant change, resulting in mediation valve control nonlinear.
4) electrical connector seal is not good, the rain will be positioned coil shorted or open circuit.
Solutions: The locator fixed firmly; sealed electrical connector; improving the quality of air purification, sewage drainage regularly.
Third, the valve action failure
1, the valve no action.
Cause: Insufficient supply pressure; actuator failure; valve no output signal; a foreign body in the gas safety burner valve; high-temperature parts trim stuck.
Solutions: Check the gas supply, restore pressure; good or bad, and the spring force of the spring to check whether the actuator diaphragm rupture and without damage (pneumatic valves); check signal; disintegration valve, a check for repairs.
2, the valve stroke inadequate Reason: Locator no improper calibration, stroke adjustment; actuator spring rating is too small; a foreign body within the valve.
Solutions: re-adjust the locator; adjust the spring; demolition valve remove the object.
3, the valve causes slow movement: packing too tight or packing deterioration of aging; the stem is not straight, misalignment, causing friction big; small air pressure.
Solutions: Recovery for the wind pressure; replace or repair the valve stem packing and other components.
Regulating valve maintenance and repair is a highly professional, technical extensive work involved. To do this work, not only need a solid theoretical foundation, but also has a wealth of practical experience, to take a scientific approach to improve the level of maintenance, reduce equipment failure rates, ensure plant safety, stability, long, full, excellent running to improve production efficiency and economic benefits.

The development of China's valve industry

The implementation of diversified sales strategy, efforts to open up international markets to expand exports.

According to China Valve Association statistics show that currently we valve industry excess capacity, about 40% of production capacity venting, the face of such a huge excess production capacity, the most effective way is to implement diversified sales strategy, vigorously explore the international market . The current international market every year about 60-70 million outlet gas safety valve, China exports 1.5 million, less than 2% share, this side has great potential. First, open up international markets to focus on foreign talent, a group will operate foreign trade professionals understand foreign languages; Second, we must learn to use the Internet and information technology, to make customers to capture business opportunities; and third, and some domestic foreign trade companies can expand cooperation with its channel exports; fourth qualified enterprises can set the point of sale or setting up factories abroad. In recent years, Shandong Yidu valve plant and Suzhou 526 plants are better achieve market diversification. A significant increase in the proportion of exports to ease the contradiction between domestic orders inadequate. Open up the international market but also pay attention to our own advantage, selecting the right export products, currently mainly in the export of labor-intensive products such common valve, in addition to semi-finished casting blank is also very good export prospects.

Fourth, improve enterprise management level, the implementation of management innovation, deepen enterprise reform, the implementation of institutional innovation is in the Gas Control Valve industry in China is currently alternating with a new round of restructuring period.

Has been declining proportion of state-owned enterprises, private, foreign-funded enterprises developed rapidly. According to incomplete data estimation; the proportion of the assets of China's valve industry at this stage, accounting for 40 percent of private, state-owned 30%, the remainder being funded, military enterprises occupy, is expected in the coming years of private and foreign-funded enterprises share will be further expanded. Now Wenzhou private enterprises developed rapidly, and the considerable number of enterprises with certain scale and strength, such as Bethel, never a Zhejiang-dimensional all profits and other enterprises. Current industry mostly state-owned heavy burden due to historical reasons, the mechanism is not live, operational difficulties, but many companies remain equipment, personnel, technology, brand and other advantages; to solve the immediate difficulties to deepen reform, institutional innovation, and fully revitalize the stock of assets, diversify their ownership and the establishment of modern enterprise system. For the rapid development of private enterprises, despite shortcomings and historical baggage mechanisms do not exist, but its development should focus on improving the management level, the implementation of management innovation, to avoid falling into the "family" and "paternalistic" management cliche. In short, the valve industry is full of hope. As long as we have to "Congress" spirit pointer, fully implement the "Three Represents", we will be able to revitalize the valve industry for China's economic development and contribute to the full realization of off target.