High pressure steel gas heater valve

Product structure type:
Gas Heater Control Valve is composed of a liquid-resistant synthetic rubber inner layer, middle layer, Ⅰ or Ⅱ or Ⅲ layer steel wire braid reinforcement, and excellent weathering performance synthetic rubber cover.
Product use:
Wire reinforced pilot operated safety valve is mainly used for mine hydraulic support, oil exploitation, suitable for construction, material handling, forging metallurgy, mining equipment, ships, injection molding machinery, agricultural machinery, tools and various industrial sectors mechanization and automation of gas heater valve delivery system with a certain pressure and temperature (e.g., mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) liquid, water-based liquid (e.g., emulsions, oil-water emulsion, water), gas and liquid transmission with.
Features:
1. Hose special selection made with synthetic rubber, has excellent oil resistance, heat aging resistance.
2. Hose bearing pressure, pulse superior performance.
3. tube combined with tight, use a soft, small Oven Safety Gas Valves deformation under pressure.
The hose has excellent resistance around the song and fatigue resistance.
5. The length of the large steel wire braided hose, φ32 length of 20 meters or more, φ25 can connect more than ten meters below even meters.
Temperature: Oil -40 ℃ - + 100 ℃, air -30 ℃ - + 50 ℃, water emulsion + below 80 ℃, please use the factory beyond specific products.

Oven gas valve - Thread Standard

Oven gas valve - Thread Standard
A threaded classification
1. thread since the beginning of two kinds of internal and external threads;
2. Press the tooth shape can be divided into: 1) triangular thread 2) trapezoidal thread 3) rectangle thread 4) serrated thread;
3. Press the line fractal single thread and multiple thread;
4. Press the right-hand thread screw-direction points and two left-hand thread, dextral not marked, plus L-LH, such as M24 × 1.5LH;
5. Press uses different points are: Metric common thread, threaded Gas Grill Control Valve thread sealing, non-threaded gas heater control valve thread sealing, 60 ° tapered pipe thread, Metric taper thread, etc.
Two Metric common thread
1. Metric common thread with a capital M, said tooth type angle 2α = 60 ° (α, said tooth-type half-width);
2. Metric common thread pitch divided by the common thread of two coarse thread and fine teeth;
2.1 coarse gas heater valve thread pitch mark is generally not indicated, such as M20, said coarse thread; fine thread pitch mark must be identified, such as M30 × 1.5 represents fine thread, where the pitch is 1.5.
2.2. The common thread for the connection between gas patio heater valve mechanical parts and fastening, multi-threaded connection generally coarse thread, than the same nominal diameter of coarse thread fine thread strength is slightly higher, better self-locking performance.
Mark 3. Metric ordinary thread: M20-6H, M20 × 1.5LH-6g-40, where M represents the common thread Metric, 20, said the thread Gas Heater Control Valve nominal diameter 20mm, 1.5 represents pitch, LH, said L, 6H, 6g, said thread accuracy class, upper class code represents precision internally threaded lower accuracy level code, said external thread, 40, said screwing length

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.

Gas Heater Valve installation and maintenance of way

The installation and maintenance of way
Prevention of leakage of pipe joints in the gas heater valve, both the metal pipe coupling, or Oven Gas Valve, are prone to leakage problems. For card sets of pipe joints, mostly due to the pipe by a large external force or impact, so that the card sleeve loose or deformed pipe ends and cause leakage, you should check whether the card holder out of round, whether the defect edge, whether the pipe end in good condition and the extent of compression ferrule nut, while also eliminating external piping. For flared Gas Heater Control Valve, mostly due to excessive flaring, substandard quality requirements or repeatedly demolished, resulting in flaring deformation or cracks caused by leaks, then you can be re-flared front end truncated. If the top male and female cones pressure seal, which is mostly due to two cone leak damage, available grinders for grinding cone. In some by "о" or outer-ring seal by the end face of the gas heater valve, the leakage following reasons: "о" ring deformation caused by aging or leakage; "о" ring assembly is not in place, so that the two-plane connection when the pressure is uneven or "о" ring is cut cause leakage; "о" ring uncompacted, insufficient amount of elastic deformation caused by leakage; "о" mouth-ring groove just too deep and cause leaks. In this regard, the need to re-select the same diameter and cross-sectional coarse "о" rings, can also be sealed with a flat opening slot stop cutting or grinding to reduce the groove depth of mouth only, so "о" ring has sufficient amount of elastic Gas Control Valves (compression in general should be between 0.35-0.65mm). For the use of oil and rubber, wool felt, soft steel cardboard combination gasket sealant joints or pipe leaks, no matter what the material is, you should first check the seals without damage, deformation, aging and rough through the large, etc. and then take the appropriate measures.

Card sets of gas heater valve installed

(1) according to the requirements of Chapter 9 of the need for pickling pipes should be pickled;
(2) according to the required length by sawing or patio heater gas valve  machines and other equipment off the tube, and definitely not broken with solvent (such as flame cutting) or cutting wheel; remove the tube ends inside and outside round burrs, metal chips and dirt; removing rust-proof pipe fittings agents and dirt; but also to ensure the pipe roundness;
(3) the nut, ferrule has set into the tube, card sets Gas Control Valve the front edge (diameter end) from the mouth of the tube at least 3mm, then taper pipe into the connector body, until the top;
(4) Slowly tighten the nut, turn the gas safety burner valve until it does not move, then tighten the nut 2 / 3-4 / 3 laps;
(5) Remove the check card sets whether to cut the pipe, the location is correct. Card sets are not allowed to move axially to slightly rotate;
(6) Tighten the nuts again after passing inspection.

Gas heater control valve

Ultra-supercritical thermal power units, also known as the minimum flow gas heater control valve boiler feed pump Pilot Safety Valve. Mounted to the pump outlet in power plant connected to the deaerator. Boiler feed pumps to suck water from the deaerator in the boiler sent. To prevent overheating and minimum flow to pump cavitation, requires a secure flow to the pump flow in any case must not be less than a certain a provision, that is. When the boiler feed water flow required is very small, the need for timely open the minimum flow gas heater valve, a portion of the high-pressure water return from the pump outlet to the deaerator to ensure the safe operation of the pump.
     Minimum flow patio heater control valve operating conditions are very harsh. When the minimum flow gas heater valve is turned on, you need to high temperature and pressure of water cascade buck, buck process minimize the occurrence of cavitation. When turned off, the need to withstand up to 35MPa even higher static pressure difference, so shut tight.
     The minimum flow valve for its use harsh working conditions, it should be able to control the throttle deputy flow area and the throttle progression and control the media flow rate, as well as improve throttle Vice reduce fluid drag coefficient of cavitation in the Oven Gas Valve flow path possibilities. Because the main constituent parts throttle vice --- maze smaller disk size, complex structure, physical test inconvenience. Thus numerical simulation techniques to study the structure of this type may be more convenient and accurate.

The application of gas heater control valve

Fluid power is a kind of urban sewage non-Newtonian properties, in which contains a lot of dirt, including the size scale and suspended sediment class fiber flow characteristics significantly different than that of water. Taking into account the specificity of the solid phase contaminants including sewage, and in order to facilitate analysis and research, urban sewage treated as a homogeneous fluid, single-phase non-Newtonian fluid model analysis, the influence attributed to solid-phase contaminants fluid influence among viscosity. Because of shearing action between the V-regulating gas heater valve spool V-notch (see Figure 1) and the Gas Heater Control Valve sealing surface, you can cut off the fibrous fluid, good sealing performance, the study of urban sewage flow characteristics can be used. This type of ball valve also has a small fluid resistance, flow capacity characteristics. Gas heater control valve complex internal structure, but also constantly changing update, with the development of computer technology and numerical calculations, the use of CFD technology to simulate fluid flow analysis has become a widely used means of engineering analysis by CFD softwares fluent of a type of V-type Gas Heater Valve regulating the flow characteristics of the internal fluid medium analog simulation, analysis of different properties of the fluid flow resistance in the case of adjusting the internal gas patio heater valve.