Basic Info.
Temperature
Ordinary Temperature
Certification
GS, CE, ISO9001
Media
Gas, Oil, Water, Acid
Medium Pressure
Above 6.4MPa
Nominal Pressure
Pn11-Pn42
Operating Pressure
Super-High Pressure
Body Rating
ANSI600lb-ANSI2500lb
Actuator Type
Diaphragm/Plunger/Bellows
Connection Type
Flange/Bw Butt Welded
Specification
110.00cm * 110.00cm * 90.00cm
Product Description
The ZZY type self-operating pressure regulating valves are ingeniously designed to operate without the need for any external energy source. These revolutionarily efficient valves harness the inherent energy of the medium they control, utilizing it as a power source to adeptly maneuver an actuator. This actuator meticulously adjusts the position of the valve core, altering the flow area with precision, and consequently, regulating the flow rate to ensure that the pressure remains stabilized either before or after the valve.
These valves are renowned for their exceptionally sensitive operation, impeccable sealing capabilities, and the ability to maintain minimal pressure fluctuation. This makes them an ideal choice for automatic control scenarios, whether it involves pressure reduction and stabilization or pressure relief and stabilization across a diverse array of mediums including gas, liquid, and steam. As a result, they find extensive applications across various industrial equipment settings.
Our highly acclaimed series of products are crafted with careful attention to detail and are categorized based on the valve core type into single-seat (P), sleeve (M), and double-seat (N) structures. Additionally, they are differentiated by actuator type, which includes the diaphragm type, piston type, and bellows type, ensuring a tailored fit for every specific application need.
Operating Principle
For applications requiring downstream pressure control (ZZYP-B type), these valves excel in pressure reduction and stabilization. When the downstream pressure surpasses the predetermined set value, the valve instinctively begins to close, eventually shutting off entirely. Conversely, when the downstream pressure is below this set value, the valve remains open, facilitating the necessary compensation to maintain balance.
In scenarios necessitating upstream pressure control (ZZYP-K type), these valves serve crucial functions of safety pressure relief and stabilization. Upon the upstream pressure exceeding the intended set value, the valve confidently opens up and remains fully open. However, when the upstream pressure falls below this set value, the valve remains closed, thus maintaining safety and stability.
Pioneered by our company, the ZZYP-II series nitrogen sealing device is a state-of-the-art self-operating micro-pressure control system. It plays a pivotal role in sustaining a steadfast pressure of protective gas, typically nitrogen, atop storage tanks. This innovative solution prevents any direct interaction between the tank's contents and the external air, thereby safeguarding against material evaporation and oxidation while ensuring the overall safety of the container.This device is particularly apt for gas sealing protection systems deployed across various large storage tanks. It stands out for its energy-efficient design, sensitivity in operation, dependable performance, and user-friendly operation and maintenance. Its widespread adoption spans numerous industries, including petroleum and chemical engineering, affirming its versatility and reliability.
Remarkably, this device operates independently of external energy sources, eliminating the need for electricity or gas. This feature enhances its convenience, while simultaneously promoting energy conservation and cost-effectiveness, making it a strategic choice for energy-conscious organizations. The nitrogen sealing device is engineered for simplicity in nitrogen supply and vent pressure configuration, ensuring seamless operation even under continuous production conditions. It boasts a pressure detection diaphragm with a large effective area and low setting spring stiffness, ensuring sensitive operation and smooth functionality.
To bolster the safety of the storage tank, it is imperative to install a breather valve at its top. The breather valve exclusively serves a safety function, mitigating the frequent and wear-inducing opening and closing of nitrogen supply and vent valves that are common in conventional nitrogen sealing devices.Test and Detection Equipment
SNT Machinery (Qingdao) Co., Ltd. is steadfast in our commitment to maintaining the elite standards of ISO9001 and API SPECQ certifications. Our approach is strategically crafted to deliver essential control methodologies and sophisticated apparatuses, incorporating top-tier inspection and testing equipment alongside high-performance process machinery. We ensure seamless integration and impeccable compatibility across all facets of design, manufacturing, inspection, testing, installation, and service processes. Our outstanding suite of tools features state-of-the-art material chemical composition analysis technology, high-precision imported metal spectrum analyzers, versatile universal tool microscopes, and comprehensive mechanical performance re-inspection capabilities.
Expanding our expertise is an extensive selection of cutting-edge nondestructive inspection equipment, including RT, UT, MT, and PT, supported by a team of certified nondestructive testing inspectors. Additionally, we offer an impressive range of pressure test equipment in various sizes, alongside state-of-the-art low-temperature test apparatus and helium mass spectrometer leak detectors. Our meticulous testing lineup includes low emission helium mass spectrometer testing, rigorous high-pressure gas testing, precision vacuum testing, exhaustive fatigue testing, and thorough degreasing testing, all dedicated to upholding the highest quality standards.
Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd. is a prestigious powerhouse in the world of control valves, where innovation meets precision. Seamlessly blending manufacturing, design, sales, and service into one harmonious unit, we are nestled in the bustling city of Qingdao, Shandong province. Our sprawling 42,000-square-meter facility boasts cutting-edge workshops and state-of-the-art production equipment. As a beacon of technological advancement, we hold independent intellectual property rights and have embraced leading-edge production methodologies from around the globe. Our vibrant team of over 150 professionals includes 15% dedicated to R&D and 30% possessing graduate or higher degrees, reflecting our commitment to innovation and excellence. Our distinguished production management team and groundbreaking research empower us to deliver a diverse range of world-class valves for petrochemical, oil, and coal chemical industries, culminating in a sales achievement approaching 100 billion in 2017.
SNT has achieved the prestigious TS special equipment manufacturing certificate and ISO 9001 certification, along with elite net qualification certificates from industry titans like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. We have also garnered numerous national patents underscoring our technological prowess. Our expansive capabilities encompass the design and manufacture of a comprehensive array of valves adhering to ANSI, API, DIN, BS, and JIS standards. By seamlessly merging the excellence of renowned global valve designs with our proprietary innovative research, we offer an extensive selection of valves, including GLOBE, high-pressure boiler blow-down valves, high-performance butterfly valves, angle-regulating valves, eccentric rotary valves, and three-eccentric center butterfly valves.
Our diverse product range includes V ball valves, high wear-resistant ball valves, high-pressure steam valves, micro-flow control valves, self-operated control valves, and cryogenic valves. These are available in manual, power-driven, pneumatic, and hydraulic configurations. We employ premium materials such as A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, with specifications spanning 1/2" to 120", and operating pressures from ANSI 150# to 2500#. Our valves, capable of operating across a wide temperature range (-196ºC to 1100ºC), are meticulously designed to meet the rigorous demands of diverse industrial applications.
Fortified with advanced production technology management and a comprehensive quality assurance system, SNT valves have become integral to the operations of industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our prestigious client roster includes industry leaders like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, SINOPEC Qingdao Refinery, SINOPEC Changling branch, and Jinan branch, among others.
With a steadfast commitment to our customers' success, we are devoted to crafting superior quality and a distinguished brand reputation. Our robust quality assurance and outstanding after-sales systems ensure that SNT valves work in harmony with our clients to forge mutual prosperity and enduring partnerships.
Address:
Shiao International 1602, Shinan District, Qingdao, Shandong, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components
Management System Certification:
ISO 9001, ISO 20000, IATF16949, HSE
Company Introduction:
SNT Machinery(Qingdao)Co., Ltd. Stands as a leading authority in control valve manufacturing. Based in the strategic hub of Qingdao, Shandong province, our sprawling 42, 000m² Facility is outfitted with cutting-edge workshops and advanced production equipment. As a high-tech enterprise, we take pride in owning independent intellectual property rights and implementing cutting-edge international management and production techniques. Our team of over 150 dedicated professionals includes 15% R&D specialists and 30% with graduate degrees or higher. This commitment to excellence and innovation enables us to produce a diverse array of top-tier valves, widely utilized across the petrochemical, oil, and coal chemical industries. In an impressive milestone, our sales neared 100 billion in 2017. SNT proudly holds the prestigious TS special equipment manufacturing certificate and ISO 9001 certification. We are honored to possess net qualification certificates from industry titans including SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Our technological prowess has garnered us multiple national patents. We design and manufacture an extensive range of valves adhering to stringent ANSI, API, DIN, BS, and JIS standards. By merging the finest attributes of world-renowned valves with our innovative R&D, we offer a comprehensive portfolio featuring GLOBE Valves, High-Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and beyond.
Our product lineup showcases V Ball Valves, High Wear-resistant Ball Valves, High-Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, available in manual, electric, pneumatic, and hydraulic driving forms. We use premium materials such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Our specifications range from 1/2" to 120" in size, accommodating working pressures from ANSI 150# to 2500# and operating temperatures from -196º C to 1100º C. Utilizing our advanced production technology, precise management, and robust quality assurance systems, SNT valves earn trust across diverse industries including petrochemical, oil, steel, iron, paper manufacturing, and power stations. Our esteemed clientele features SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, PETROCHINA Ningxia branch, among others. At SNT, we are devoted to maximizing customer profitability by consistently delivering superior quality and establishing a reputable brand. Our unwavering commitment to comprehensive quality assurance and exemplary after-sales services ensures that SNT valves cultivate enduring partnerships with our clients, driving mutual success and long-term prosperity.
