Zzyvp Nitrogen Sealing Device/Nitrogen Sealing Valve

• Temperature: Ordinary Temperature
• Certification: GS
• Media: Gas, Oil, Water, Acid
• Standard: Standard
• Connection Mode: Flange
• Power: Self-Regulating
• Model NO.: ZZYVP
• Material: Stainless Steel
• Type: Cage Type
• Use: Adjust
• Pressure: Normal Pressure
• Port of Ningbo: Class IV (Standard, Metal Seat)
• Body Type: Straight Through, Angle, Z Shape
• Transport Package: Wooden Box
• Specification: DN15-DN500
• Trademark: xc
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000

Product Description

Overview of nitrogen sealing device
Nitrogen sealing device is mainly used for constant nitrogen pressure control at the top of the tank to protect the materials in the tank from nitriding and the safety of the tank. The nitrogen sealing device iscomposed of ZZDQ quick release valve and ZZV micro-pressure regulating valve. The quick release valve is ZMQ-16K single seat cut-off valve.composed of pressure controller and

ZZV micropressure regulating valve model: ZZV V230	Nominal diameter of ZZV micropressure regulating valve: 25MM-100MM	ZZV micropressure regulating valve use pressure: 1.6MPA-2.5MPA
ZZV micropressure regulating valve connection mode: flange connection	ZZV micro-pressure regulating valve form: self-reliant	ZZV micro pressure regulating valve main function: control pressure
ZZV micro pressure regulating valve medium: a variety of media	ZZV micropressure regulating valve material: WCB cast steel stainless steel	ZZV micro-pressure regulating valve standard: mechanical department standard or custom non-standard

When the pressure in the tank rises to the set pressure, the quick release valve quickly opens to release the excess pressure in the tank. When the pressure in the tank decreases, the micro-pressure regulating valve opens the valve and fills nitrogen into the tank. Because the micro-pressure regulator must be used in the pressure of 0.1Mpa below the pressure, the field pressure is higher, must install ZZYP type pressure regulator valve pressure regulator to reduce the pressure to 0.1Mpa below can be used. Nominal pressure 0.1Mpa, the pressure can be set according to the section, from 0.5Kpa to 66Kpa below, medium temperature temperature ≤80ºC.


Product characteristics of nitrogen sealing device
The nitrogen sealing device is convenient to set the nitrogen pressure, and can be carried out under the condition of continuous production;
The nitrogen pressure setting range is wide, as low as 0.5Kpa (50mm.w.c), as high as Kpa, the ratio is 132 times, the effective area of the pressure detection diaphragm is large, the setting spring stiffness is small, and the action is extremely sensitive.
Nitrogen seal valve adjustment:
Nitrogen pressure adjustment: select a set value such as 1Kpa (100mm.w.c) within the pressure adjustment range of ZZV type micro-pressureregulating valve, and achieve it by adjusting the adjusting screw 2 to change the precompression (stretch) amount of spring 3;
Nitrogen relief pressure adjustment: in the pressure controller part of ZZDQ quick relief valve, by adjusting seat 3, changing the precompression amount of spring 4 to achieve. Generally, in order to avoid frequent opening and closing of the nitrogen sealing device, the nitrogen discharge setting value should be far away from the nitrogen supply pressure value, such as 2Kpa (200mm.w.c);
Breathing valve high set value adjustment: after the above two set values are adjusted, in order to avoid breathing valve opening and closing frequently, the breathing valve set value should be greater than the pressure relief set value.
Nitrogen seal valve device is a kind of self-reliant regulating valve, self-reliant regulating valve according to the application of different media, there are many kinds of air, nitrogen, steam, liquid, tank top will generally be equipped with breathing valve, toxic medium tank when reaching liquid level stability, tank top pressure is equal to the medium at the temperature of the steam pressure, when breathing valve exhaled, Toxic media will be discharged to the outside of the tank, easy to cause poisoning, in order to avoid toxic media volatilization, need to maintain a certain pressure on the liquid surface of the tank top, to avoid toxic media volatilization and then empty, generally use nitrogen to maintain this pressure, this is called nitrogen seal.
Valve production of nitrogen seal valve, nitrogen seal device is a self-developed, developed a set of self-supporting micro pressure control system, only used to keep the top of the container to protect gas (generally nitrogen) pressure constant, to avoid direct contact with the material in the container and air, prevent material volatilization, oxidation, and the safety of the container. Especially suitable for all kinds of large storage tank gas seal protection system. The product has the characteristics of energy saving, sensitive action, reliable operation, convenient operation and maintenance. It is widely used in petroleum, chemical and other industries.
Characteristics of nitrogen sealing valve and nitrogen sealing device:
1. Without external energy, it can work in the occasions of no electricity and no gas, which is convenient, energy saving and cost reduction.
2, nitrogen sealing device nitrogen supply, nitrogen discharge pressure set convenient, can be carried out under the condition of continuous production.
3. The effective area of the pressure detection diaphragm is large, the stiffness of the setting spring is small, the action is sensitive, and the device works smoothly.
4, the packless design, the valve stem by the friction is small, rapid response, high control accuracy.
5, the nitrogen supply device is operated by the conductor, the pressure reduction ratio can reach 100:1, the pressure reduction effect is good, the control precision is high.
The nitrogen seal valve device is composed of two parts: nitrogen supply device and nitrogen discharge device. The nitrogen supply device is composed of two parts: the controller and the main valve; The nitrogen discharge device is composed of a pressure-open micro-pressure regulating valve with internal feedback. The nitrogen pressure is generally set at 100mm day 20, which is accurately controlled by the nitrogen sealing device. When the tank inlet valve is opened. When adding materials to the tank, the liquid level rises, the volume of the gas phase part decreases, and the pressure increases. When the pressure in the tank rises to a value higher than the pressure set value of the nitrogen discharge device, the nitrogen discharge device opens and releases nitrogen to the outside world, so that the pressure in the tank drops and falls to the pressure set point of the nitrogen discharge device, the nitrogen discharge device automatically closes. When the tank outlet valve opens, the user discharge, the liquid level drops, the volume of the gas phase part increases, the pressure in the tank decreases, the nitrogen supply device opens, the tank injection nitrogen, so that the pressure in the tank rises, when the tank pressure rises to the nitrogen supply device automatically closes.
Nitrogen sealing valve device is mainly used for constant nitrogen pressure control at the top of the tank to protect the materials in the tank from nitriding and the safety of the tank. The nitrogen sealing valve device is composed of two parts: quick release valve and micro-pressure regulating valve. The quick release valve is composed of a pressure controller and a single-seat cut-off valve.
When the pressure in the tank rises to the set pressure, the quick release valve quickly opens to release the excess pressure in the tank. When the pressure in the tank decreases, the micro-pressure regulating valve opens the valve and fills nitrogen into the tank. Because the micro pressure regulator must be used in the pressure of 0.1Mpa below the pressure, the field pressure is higher, must be installed pressure regulator valve pressure regulator to reduce the pressure to 0.1Mpa below can be used. Nominal pressure 0.1Mpa, the pressure can be set according to the section, from 0.5Kpa to 66Kpa below, medium temperature temperature l80ºC.
The nitrogen pressure supply (discharge) of the nitrogen seal valve device is convenient to set, and can be carried out under the condition of continuous production; The nitrogen pressure setting range is wide, as low as 0.5Kpa(50mm.w.c), as high as Kpa, the ratio is 132 times, the effective area of the pressure detection diaphragm is large, the setting spring stiffness is small, and the action is extremely sensitive.
Nitrogen pressure adjustment: select a setting value such as 1Kpa(100mm.w.c) in the pressure adjustment range of the micro-pressure regulator valve, and achieve it by adjusting the adjustment screw 2 to change the precompression (stretch) amount of spring 3;
Nitrogen relief pressure adjustment: In the pressure controller part of the quick relief valve, by adjusting seat 3, change the spring 4 precompression amount. In general, in order to avoid frequent opening and closing of the nitrogen sealing device, the nitrogen discharge setting value should be far away from the nitrogen supply pressure value, such as 2Kpa(200mm.w.c), breathing valve high set value adjustment: after the above two set values are adjusted, in order to avoid breathing valve opening and closing frequently, breathing valve setting value should be greater than the pressure relief setting value.
Xuan Cheng Valve Co., Ltd. specializes in the production of electrical regulating valve, self-reliant pressure regulating valve, nitrogen sealing device, these products are widely used in petroleum, chemical industry, electric power, metallurgy, mili/tary, shipbuilding, light industry, paper making, printing and dyeing, medicine and environmental protection engineering and many other fields. three
Nitrogen sealing device parts materials

Part name	Materials
Valve body	ZG230-450 ZG1Cr18i9Ti
Stem, spool, seat	1Cr18i9Ti
Diaphragm	Nitrile butadiene rubber clip reinforced tapefibre fabric
Spring	60Si2Mn
Bellows	1Cr18i9Ti

Main technical parameters of nitrogen sealing device

Nominal diameter DN(mm)	20	25	32	40	50	65	80	100
Rated flow coefficient (KV)	8	11	20	32	50	80	100	160
Rated stroke (mm)	6	8		10		15		20
Nominal pressure PN(Mpa)	0.10
Pressure adjustment range (MP a)	0.5∽5.5, 5 to 10, 9 to 14, 13 to 19, 18 to 24, 23 to 2827 to 33, 31 to 38, 36 to 44, 42 to 51, 49 to 58, 56 to 66
Medium temperature (° C)	80 ºC or less
Adjustment accuracy (%)	Plus or minus 10
Allowable leakage (L/h)	4 x 10 valve rated capacity

Nitrogen sealing device size and weight

Nominal diameter DN	20	25	32	40	50	65	80	100
A	192			232		308
H	629	631	652	Awesome!	689	797	837	1050
L	150	160	180	200	230	290	310	350
G(Kg)	18	19	21	23	25	37	50	59

Nitrogen sealing device flange specification

Nominal diameter DN	20	25	32	40	50	65	80	100
D	105	115	140	150	165	185	200	220
D1	75	85	100	110	125	145	160	180
B	16		18		20		22
N - ф	4-14		4 to 18				8 to 18
f1×D2	2 x 56	3 x 65	3 x 76	3 x 84	3 x 99	3 x 118	3 x 132	3 x 156

Nitrogen sealing device installation matters
(1) Before installation, check whether the whole machine parts are defective and loose, the pipeline should be cleaned, and the medium flow direction should be consistent with the arrow on the valve body.
(2) In order to on-site maintenance and operation, appropriate space should be left around the valve and set up bypass manual valve, valve group installation scheme.
(3) The valve should be vertically installed on the horizontal pipeline, the valve body and the normal dust connection of the pipeline, pay attention to the coaxiality, and should be installed in the environment temperature does not exceed -25 ~ 55ºC occasions.
Control valve order notice
User's order needs to provide regulating valve medium, regulating valve before pressure, valve after setting pressure, maximum flow/hour, pressure difference/flow ratio, determine the valve size/connection mode standard maximum stroke open stroke flow regulation ratio pressure fluctuation (precision) pressure/temperature ratio, maximum temperature resistance, valve body material switch state (on and off), pressure grade, internal leakage rate Valve body structure/regulating valve working principle/regulating valve installation instructions and other related technical data when the occasion is very important or the environment is more complex, please try to provide design drawings and detailed parameters, by our Xuan Cheng valve company experts for you to review and check thank you for visiting our website [Xuan Cheng valve company] if you have any questions. You can call us, we will do our best to provide you with quality service.

 

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SZDLN electronic electric regulating valve	SZAZP electric single seat regulator	Electronic electric three-way regulating valve	SZDLP electronic electric regulating valve
Nitrogen sealing device	SZXT pneumatic film diaphragm regulator	Pneumatic film regulator	SZRQM intelligent electric regulating valve
Pneumatic three-way regulating valve

Xuan Cheng valve after-sales service commitment
For your company in Xuan Cheng valve order valve products, our factory in the after-sales service to make the following commitment:
First, our company implements three guarantees for product quality, namely: guarantee quality, guarantee replacement, warranty;
Two, after signing the contract, guarantee the quality, quantity, delivery on time;
Three, the company to ensure that the valve products to meet the contract indicators
Iv. Provide answers to the technical consultation of the demander at any time;
5. When delivering the equipment, our factory shall deliver the following materials to the demander: shipping list, product qualification certificate, product sample, product instruction manual and technical data;
When receiving the letter or phone call of the customer's response to the quality problem, we guarantee to reply within 24 hours to solve the problem.
Xuancheng valve order notice
1, according to the use of the place, use, and understand the relevant regulations, specifications, standards, guidelines, permissible approval can be selected for various requirements of the valve
2, confirm the working conditions of the valve, the use of specifications, applicable media, corresponding material, mode of operation, working pressure, medium temperature;
3. Determine the nominal diameter matching with the pipeline: DN(mm), NPS(");
4, determine the connection mode with the pipeline: flange type, inside (outside) thread type, welding type, clamp type, clamp type, sleeve type, etc.
5. Determine the driving mode of valve operation: manual, worm gear and worm drive, pneumatic, electric, hydraulic, electromagnetic, electro-hydraulic, etc.
6, confirm the type of valve: ball valve, gate valve, butterfly valve, globe valve, check valve, regulating valve, solenoid valve, safetyvalve, pressure reducingvalve, trap, needle valve, Angle seat valve, diaphragm valve, balance valve, filter and other special valves;
7, determine the use of the valve: switch type, regulator type, safety type, automatic type, discharge type, etc.;
8, determine the valve shell and internal materials: carbon steel, alloy steel, stainless steel, nodular cast iron, gray cast iron, copper alloy, aluminum alloy, plastic, etc.;
9, determine the sealing performance requirements of the valve, sealing grade or sealing leakage;
10, determine the protective coating requirements, packaging requirements, transportation requirements of the valve;
11, special needs of the valve should also be determined: structural length, valve height, appearance size, flow resistance, discharge capacity, flow characteristics, protection level, explosion-proof performance and other parameters;
12, determine the installation position and posture of the valve.