Basic Info.
Temperature
High Temperature
Seal Surface
Parallel Gate Valve
Thread Position of Valve Rod
Inside Gate Valve
Usage
Regulation, Safety, Emptying, Drain, Temperature Control, Flow Control
Application
Industrial Usage, Water Industrial Usage, Household Usage
Medium
Gas/ Suspended Particles/Fibers
Actuator Conbination
Pneumatic Cylinder Actuator
Characters
Excellent Opening and Closing
Operations
Featuring Full Bore/Low Flow Resistance
Operation
Good Sealing Performance
Connections
RF Flange/Rtj/Sw Socket Welt/Bw Butt Weld
Actuator Size/Plug Size
1.1/2′′(40A)-36′′(600A)
Actuators
Pneumatic, Electric
Fluid Temperature
-20~+566degree
Body Materials
A216 Wcb/C/A351CF8
Body Material
Carbon Steel/Stainless Steel
Trim Materials
A105+Enp+PTFE/SUS316+Stellite
Flow Characteristics
on-off
Transport Package
Plywood Case
Product Description
Product Description
Our cutting-edge spring-loaded double parallel sliding gate valve is an engineering marvel that stands out when compared to the traditional wedge gate valve. This innovative design boasts a significantly reduced operating torque and a more compact drive size, making it a perfect choice for efficiency and space-saving needs. Inside the valve, an advanced INCONEL butterfly spring has been ingeniously integrated, replacing the traditional coil spring, which simplifies the assembly process within the valve body. With its unique compensation structure, the design expertly prevents jamming from high-temperature conditions caused by adhesion and wedge extrusion. To top it off, the valve plate and seat surfaces are meticulously hardened with state-of-the-art techniques such as hard alloy overlay welding, surface spraying of Co-Cr-Ni alloy, WC, and boron. These enhancements ensure magnificent self-cleaning abilities with an impressive surface hardness that reaches HRC90 or beyond, promising exceptional durability and performance.
This versatile spring-loaded double parallel sliding gate valve is compatible with a variety of actuators, allowing it to adapt seamlessly to different operation needs. Whether paired with pneumatic actuators for precision control, electric actuators for smooth automation, electro-hydraulic actuators for powerful performance, or manual actuators for simplicity and cost-effectiveness, this valve delivers outstanding flexibility and reliability. Product Parameters
Body Type | AOC-9031 Single Parallel Sliding Gate Valves | AOC-9032 Double Parallel Sliding Gate Valves | AOC-9033 Spring Loaded Double Parallel Sliding Gate Valves |
Actuator Size | 1.1/2''(40A)-36''(900A) | 1.1/2''(40A)-36''(900A) | 1.1/2''(40A)-24''(600A) |
Plug Size | 1.1/2''(40A)-36''(900A) | 1.1/2''(40A)-36''(900A) | 1.1/2''(40A)-24''(600A) |
Body Rating | ANSI 150-300 | ANSI 150-600 | ANSI 150-1500 |
Fluid Temperature | -20~+250ºC | -20~+450ºC | -20~+566ºC |
Connections | Flanged(RF, RTJ), Butt Weld, Socket Weld(SW, BW) |
Body Materials | A216WCB/C,A217 WC6/9, A351 CF8, A351CF8M,etc |
Trim Materials | A105+ENP+PTFE,SUS316+Stellite, etc | SUS316+Stellite |
Flow Materials | ON-OFF | ON-OFF | ON-OFF |
Leakage | Metal Seat | ANSI Class V | ANSI Class V, VHS | ANSI Class V, VHS |
Soft Seat |
Structural Features
Product Feature
Crafted with precision, our valve boasts a pressure seal bonnet, enhanced with a high-density pure graphite gasket for superior sealing.An advanced overpressure protection device is masterfully integrated into the bonnet, safeguarding against undue pressure surges.Ingenious design highlights a spring preloaded flat gate valve for optimized performance.Engineered with a wide valve seat and gate to ensure uncompromised flow and reliability.A robust limit device is strategically placed on the support rod for controlled valve operation.Features an anti-rotation device meticulously installed on the valve stem to maintain alignment.To combat significant wear, the sealing surface boasts differing hardness levels. This careful balance of hardness (~5HRC) features gate - STLG#, valve seat - STL12#, ensuring durability and efficacy.The bonnet's conical design is precision-engineered to enhance sealing capabilities.Designed for bidirectional flow, our valves accommodate versatile operational needs.Equipped with dual thrust bearings and resilient aluminum bronze sleeves for smooth operation.Offers a versatile bypass piping structure to elevate performance and adaptability.Spring Compensated Valve Plate Assembly ensures consistent performance under varied conditions.
Innovative graphite ring pressure self-sealing structure for enhanced sealing integrity.Remarkable design principle: The higher the pressure, the greater the sealing force, ensuring reliability.
For high-temperature or rapidly fluctuating temperature environments, we advocate the use of graphite pressure sealing gaskets over standard soft iron, ensuring durability and resilience in demanding applications.Double Parallel Sliding Gate ValvesOur Double Parallel Sliding Gate Valves introduce a groundbreaking sealing architecture with two parallel gates and a wedging device, effectively replacing the conventional wedge gate valve design. This ensures steadfast sealing, accommodating deformation from temperature variations without jamming, even in high-temperature expansions.
Upon opening, the valve's innovative design causes the sealing disk and valve seat to disengage effortlessly before ascending, thanks to the wedge block effect. This significantly reduces friction, allowing for minimal torque, ease of operation, and an extended service life. This design innovation tackles challenges like high lifting force for single gate starts, sealing surface wear, poor sealing efficacy, short service lifespan, and high-temperature jamming, enhancing both sealing performance and longevity. Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd. stands at the forefront of the valve manufacturing industry, seamlessly integrating design, production, sales, and services. Located in the bustling city of Qingdao, Shandong, and sprawling over an expansive 42,000 square meters, our modern facility is equipped with state-of-the-art machinery. As a high-tech enterprise, we boast independent intellectual property rights and have infused our operations with advanced management techniques from global leaders. Our dynamic workforce of over 150 includes a remarkable 15% dedicated to research and development, and an impressive 30% hold graduate or higher degrees. Our commitment to quality and innovation propels our production of premium valves extensively utilized in the petrochemical, oil, and coal industries, boasting a remarkable sales value approaching 100 billion in 2017.
SNT has achieved distinguished certifications, including the TS special equipment manufacturing certificate and ISO 9001, alongside net qualification recognition from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. We are proud holders of numerous National Patents, empowering us to design and produce valves adhering to ANSI, API, DIN, BS, and JIS standards. By synthesizing the best global valve technologies and fostering independent research, we manufacture a comprehensive range of valves, including GLOBE, High-Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, and Eccentric Rotary Valves.
Our extensive product lineup features T Three-eccentric Center Butterfly Valves, V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, and more. With drive options ranging from manual to power-driven, pneumatic, and hydraulic, our valves cater to diverse needs. We utilize premium materials like A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M, covering specifications from 1/2" to 120", pressures from ANSI 150# to 2500#, and temperatures from -196ºC to 1100ºC.
Harnessing cutting-edge production technology and a robust quality assurance system, SNT valves have penetrated markets across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes heavyweights like the SINOPEC QILU and Qingdao branches, CNOOC Huizhou Refinery, PETROCHINA Guangxi and Ningxia branches, and SINOPEC Changling and Jinan branches.
At SNT, we prioritize our users' profitability, steadfast in our mission to cultivate superior quality and a revered brand. Our impeccable quality assurance and comprehensive after-sales services ensure that SNT valves form enduring partnerships with our customers, paving the way for mutual growth and success.
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.