Self operated pressure control regulating valve

【Self operated pressure control regulating valve】Professional manufacturer, a well-known valve brand in Shanghai. The self operated pressure control regulating valve produced by Shanghai Zhenggang Valve Manufacturing Co., Ltd. has reliable quality, reasonable price, and high-quality after-sales service. The continuously improving quality management system and strong technical development team ensure the applicability and long service life of self operated pressure regulating valve products to working conditions. High quality self operated pressure control regulating valve suppliers provide you with models, information, and dimensions. Advanced manufacturing equipment, nearly ten years of professional manufacturing experience in self operated pressure regulating valves, a large national general valve production enterprise, providing high-quality manual regulating valve products for users at home and abroad.

We are a professional manufacturer of self operated pressure control regulating valves, independently developed and produced by Zhenggang. Our regulating valves have reliable quality, reasonable prices, and complete after-sales service. The self operated pressure control regulating valve is suitable for various light and heavy industries and building pipelines. Steel quality, shared globally! Regulating valves are widely used in various fields such as chemical, petrochemical, petroleum, papermaking, mining, electricity, liquefied gas, food, pharmaceuticals, water supply and drainage, municipal, mechanical equipment supporting, electronic industry, urban construction, etc.

Self operated pressure control regulating valveOverview

ZZY type self operated pressure control regulating valve does not require external energy. It uses the energy of the regulated medium as a power source, introduces an actuator to control the position of the valve core, changes the pressure difference and flow rate at both ends, and stabilizes the pressure before (or after) the valve. It has the advantages of sensitive action, good sealing, and small pressure set point fluctuations, and is widely used in automatic control of pressure reduction and stabilization or release and stabilization of gas, liquid, and steam media. This series of products has three types of structures: single seat (ZZYP), sleeve (ZZYM), and double seat (ZZYN). The actuator has two types: diaphragm type and piston type. The action types include pressure relief valve rear pressure regulation (B type) and pressure relief valve front pressure regulation (K type). The nominal pressure rating of the product includes PN16, 40, and 64; Valve body diameter range DN20~300; There are three levels of leakage levels: Level II, Level IV, and Level VI; The traffic characteristic is fast opening; The pressure is adjusted in stages from 15 to 250MPa. Can be combined as needed to meet user operating requirements.

Typical installation of front regulating pressure (K) type and rear regulating pressure (B) type:

ZZYP type self operated pressure regulating valve is composed of valve body, valve seat, valve core, balance spring and other components. It is a valve that does not require external energy and uses the pressure changes of the regulated medium to automatically regulate. It is an energy-saving product that introduces the controlled medium into the actuator based on mechanical principles to generate force and push the valve core element up and down to achieve automatic regulation, and maintains constant pressure or pressure before or after the valve. The biggest feature of this product is that it can work in places without electricity or gas, and the pressure setting value can be adjusted freely during operation. Adopting fast opening flow characteristics, with sensitive action and good sealing performance, it is widely used in automatic control of gas, liquid, steam and other medium pressures in various industrial equipment such as petroleum, chemical, power station, light industry, printing and dyeing.
【1】 There are two types of actuators for this series of products: membrane type and piston type; The forms of action include: pre valve pressure regulation (pressure relief and holding type), post valve pressure regulation (pressure reduction and stabilization type); The attached thermal insulation condenser can be used at temperatures ≤ 350 ℃. According to different working conditions, different types of valve core structures and actuators can be selected to achieve the best control effect.

【2】 Main component materials:

【3】 Main technical parameters

Note: The pressure adjustment range can be customized according to user requirements

【4】 ZZY type self operated pressure regulating valve external connection dimensions:

The regulating valve consists of an electric or pneumatic actuator and a regulating valve. Regulating valves are divided into electric regulating valves, pneumatic regulating valves, and hydraulic regulating valves (self operated regulating valves). Regulating valves are used to regulate the flow rate, pressure, and liquid level of the medium. According to the signal from the regulating position, the opening of the valve is automatically controlled to achieve the regulation of medium flow rate, pressure, and liquid level. Regulating valves are usually divided into two types: straight through single seat regulating valves and straight through double seat regulating valves. The latter has the characteristics of large flow capacity, small imbalance, and stable operation, so it is usually particularly suitable for situations with high flow rate, high pressure drop, and low leakage. The flow capacity Cv is one of the main parameters for selecting a regulating valve. The definition of the flow capacity of a regulating valve is: when the regulating valve is fully opened, the pressure difference between the two ends of the valve is 0.1MPa, and the fluid density is 1g/cm3, the flow rate per hour of the regulating valve is called the flow capacity, also known as the flow coefficient, expressed in Cv, with the unit of t/h. The Cv value of the liquid is calculated according to the following formula.

Self operated pressure control regulating valve product commitment:
Zhenggang Valve has always adhered to integrity as the soul of the enterprise. Adhering to the business principle of providing high-quality products and dedicated service to customers, the company aims to meet customer needs and is willing to promote cooperation through its own efforts to provide customers with high-quality products and excellent services. Zhenggang implements an open service commitment.
1. From the date of supply, the products provided by Zhenggang have a warranty period of 12-24 months under normal use. During the warranty period, all products are guaranteed to have quality, quantity, repair, and replacement. We also provide lifelong free consultation services.
2. If the product is damaged or used improperly due to transportation, loading and unloading, storage, unauthorized disassembly, improper maintenance, natural disasters, or outside the warranty period, our company will provide lifelong technical services for the product and only charge the cost of the accessories.
3. If users discover product quality issues or service complaints, Zhenggang will arrive at the scene within 2 hours in the urban area of the city based on the distance of the journey after receiving the user's letter. If there are major problems in other areas, Zhenggang guarantees to arrive at the scene within 24 hours and provide timely answers and solutions to ensure customer satisfaction.
4. The company promises to provide maintenance services quickly at the most reasonable and favorable price after the warranty period expires, and to send technical personnel to the buyer's site for technical services upon request.
5. The company has sufficient supply of goods, complete varieties, abundant accessories, strict emergency plans and measures, and can timely solve users' temporary emergency needs.
During the use of the product, Zhenggang will actively adopt and improve feedback from users on product quality, performance, improvement suggestions, or other constructive suggestions in order to further improve product quality and better reward users.
Ordering instructions for self operated pressure control regulating valve:
1. Product selection: If there are specified model standards, please contact the live sales hotline to inquire about prices and learn more details!
2. Technical support: If the product model and specifications are not specified, please send the operating requirements, design drawings, and technical specifications to our company by fax or email.
3. Parameter description: Please provide the diameter (DN), nominal pressure (Mpa), temperature (℃), connection method (thread, flange, clamp, etc.), and driving method.
4. Drive modes: manual, worm gear, pneumatic, electric, etc.
5. Product standards: National standard GB, Japanese standard JIS, American standard ANSI, German standard DIN, etc.
6. Quotation confirmation: Our company provides a quotation list and technical standard specifications to the customer for confirmation. After both parties confirm the technical aspects, we will draft the contract.
7. Quality standards: Quality requirements, quality standards, and conditions for suppliers to be responsible for quality shall be in accordance with relevant national quality standards.