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Self operated temperature control valve YZW type

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Abstract: Self operated temperature regulating valve is a valve that controls the temperature of liquids or gases. Puhui brand self operated temperature regulating valve is a self operated valve that does not require external energy, telephone. Provide the price of self operated temperature control valves and the working principle of self operated temperature control valves.

Puhui brand YZW type self operated temperature regulating valve

Product Introduction of Self operated Temperature Regulating Valve

Self operated temperature control valveIt is the abbreviation for self operated temperature regulating valve. YZW type self operated temperature control valve is an energy-saving valve that does not require external energy and relies on the temperature changes of the regulated medium to automatically adjust. It has comprehensive functions of measurement, execution, and control. It is suitable for various heat exchange applications using steam, hot water, hot oil, and other media. Widely used for automatic temperature regulation in heating, air conditioning, domestic hot water, as well as in special occasions such as chemical, textile, pharmaceutical and other production processes.

Working principle of self operated temperature regulating valve

The YZW self operated temperature control valve utilizes the principle of liquid thermal expansion and incompressibility to achieve automatic adjustment. The liquid expansion inside the temperature sensor is uniform, and its control function is proportional adjustment. When the temperature of the controlled medium changes, the volume of the temperature sensing liquid inside the sensor expands or contracts. When the temperature of the controlled medium is higher than the set value, the temperature liquid expands, pushing the valve core downwards to close the valve and reduce the flow rate of the heat medium; When the temperature of the controlled medium is lower than the set value, the temperature sensing liquid contracts, and the reset spring pushes the valve core to open, increasing the flow rate of the heat medium.
Scope of application: Heating and air conditioning, domestic hot water, petrochemical, power, electromechanical, textile, rubber food and other industries.

Characteristics of using self operated temperature control valve:

1. Small size, light weight, and easy installation;
2. Accurate, reliable, and long-lasting;
3. Maintenance free work;
4. Easy to adjust settings;
5. Passive operation (no power supply, normal operation of gas source);
6. No need for expensive debugging costs;
7. The valve body seal adopts a V-shaped high-temperature sealing component to prevent the possibility of the valve stem being too tight or leaking.

Main technical performance indicators of self operated temperature regulating valve

How to choose a self operated temperature regulating valve? What parameters do I need to master? Pipeline diameter, pipeline pressure, pipeline medium, temperature control and regulation, accessory requirements. Excellent quality, Hebei Puhui is your ideal choice. Free assistance in designing pipelines and providing the most reliable installation solutions.
Is there a threaded connection for the self operated temperature regulating valve? Threaded connections are usually flange connections. Flange connection is more convenient for future maintenance and management, and the flange is easy to maintain and disassemble.

Installation dimension data of self operated temperature control valve structure:

Nominal diameter DN (mm)		15		20			25		32	40	50	65	80	100	125	150	200
Nominal diameter DN (mm)		thread	flange	thread	flange	thread		flange	Flange connection
KV value (m3/h)		2	4	3	5	4		8	13	20	32	50	80	120	180	280	350
structure size mm	L	68	130	83	150	90		160	180	200	230	290	310	350	400	480	550
			510		520			530	660	680	700	720	750	780	820	860	950
	D	20	95	25	105	40		115	135	145	160	180	195	215	245	280	335
	H2	200	200	200	200	200		200	300	300	300	300	300	400	400	500	500
	d	25	25	256	25	25		25	25	25	25	25	25	25	25	25	25
G(in)		32	32	32	32	32		32	32	32	32	32	32	32	32	32	32

Performance parameters of self operated temperature control valve:

material material	Valve body: ductile iron, cast steel, stainless steel
	Valve stem and core: 304 stainless steel
	Temperature sensing package: 304 stainless steel
Nominal Diameter	25-200mm
nominal pressure	1.6-2.5MPa
operation temperature	-10-180℃
Temperature range	28℃-110℃
Tube length	Standard 3 meters (customized 5-12 meters)
Applicable Medium	Cold water, hot water, oil, and vapor
Control accuracy	± 2℃
Stem seal	Graphite, PTFE, pressure plug V-shaped high-temperature seal

Installation of self operated temperature regulating valveBasic requirements: During installation, the machinery must be perpendicular to the ground, and not perpendicular will reduce the accuracy of temperature control; A filter must be installed before the valve (as shown in the figure), which can be selectedT-shaped filterIt is strictly prohibited to use it as a shut-off valve. Here are three common installation examples of self operated temperature regulating valves.

Procurement Notice for Self operated Temperature Regulating Valve

1. YZW letter model represents self operated temperature regulating valve, DN80 represents nominal diameter mm.

When placing an order, please provide detailed usage scenarios, nominal diameter, nominal pressure, working pressure, heat medium and temperature, controlled medium and temperature requirements.

3. The general length of the catheter is 3.5-4.5m. If there are special requirements, please specify.

If you need other special purpose self operated temperature regulating valves, please contact our factory directly.

Adjustment of low and high outlet temperature of self operated temperature control valve

The outlet temperature of the self operated temperature regulating valve is lower than the set value; The water temperature of the temperature control valve is higher than the set value.
1. If the outlet temperature of the temperature control valve is lower than the set value during the initial use of the equipment or after a long period of shutdown, please wait patiently for the system to cycle a few times before reaching the required temperature. If the temperature does not rise after multiple cycles, please check from the following aspects: whether the pressure or flow rate of the primary heat source is too low. Note: Unstable pressure or flow rate of a heat source may also cause significant temperature fluctuations. Check if the drain valve of the heat exchange unit is blocked or if there is too much resistance. Check the water delivery valve or open the bypass of the water delivery valve. The valve stem of the self operated temperature control valve may lock due to heat or tight pressure plug, causing the valve to fail to open. Please use a random wrench to adjust the bell jar pressure plug or spring nut counterclockwise. Note: The locking of the valve stem is reflected in the inability of the spring compression to reset. Check if the conduit of the self operated temperature control valve is in contact with the high-temperature pipeline, causing additional temperature sensing. Please separate it.
2. Check if the bypass shut-off valve of the self operated temperature regulating valve leaks or is not closed when the water temperature of the temperature control valve is higher than the set value. The outlet temperature of the self operated temperature control valve is set too high. Use an adjusting wrench to lower the outlet temperature. Observe whether the valve stem is in the open state and not compressed downwards. At this time, it is necessary to check whether the conduit or temperature sensing bulb is leaking. If there is any leakage, please replace it in a timely manner. The valve body is leaking inside, and it is necessary to disassemble the valve body to check whether the valve port is stuck or scratched by welding slag or other debris, causing the valve to not close tightly and leak steam. The walking device does not move to check whether the catheter is broken or cracked, causing liquid leakage in the catheter or temperature sensing bag.

How to install, use, and maintain a self operated temperature control valve

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