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
Introducing our cutting-edge spring-loaded double parallel sliding gate valve, a marvel in engineering compared to traditional wedge gate valves. This innovative design boasts a reduced operating torque and a more compact drive size, thanks to the ingenious use of an INCONEL butterfly spring instead of the conventional coil spring. This enhancement simplifies the assembly process within the valve body. The valve's unique compensation structure is specially crafted to prevent jamming even under high-temperature conditions, eliminating issues caused by adhesion and wedge extrusion. Our valve plate and seat are fortified with advanced hardening techniques, including hard alloy overlay welding and surface spraying with Co-Cr-Ni alloy, WC, and boron, achieving an impressive surface hardness of HRC90 or above. This not only enhances durability but also imbues the valve with self-cleaning capabilities, ensuring optimal performance and longevity.
Our versatile spring-loaded double parallel sliding gate valve is engineered to work seamlessly with a variety of actuators. Choose from pneumatic actuators, electric actuators, electro-hydraulic actuators, or manual actuators to suit your specific application needs, ensuring flexibility and adaptability in diverse operational environments.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
Equipped with a robust pressure seal bonnet featuring a high-density pure graphite gasket for superior sealing integrity.Ingeniously designed overpressure protection device incorporated into the bonnet to safeguard against excessive pressure build-up.Innovative spring preloaded flat gate valve ensures smooth and efficient operation.Engineered with a relatively wide valve seat and gate for enhanced durability and performance.Includes a precise limit device on the support rod for controlled and reliable movement.Fitted with an anti-rotation mechanism on the valve stem to maintain alignment and prevent unwanted rotation.The sealing surface is designed with varying hardness at both ends, minimizing wear. The gate features STLG# hardness, while the valve seat is crafted with STL12#, offering a hardness difference of approximately 5HRC.Employs a conical design for bonnet sealing, ensuring a tight and secure seal.Facilitates bidirectional flow, enhancing versatility and functional application.Incorporates two thrust bearings paired with aluminum bronze sleeves for optimal performance and longevity.Bypass piping structure is thoughtfully available to accommodate diverse operational needs.Innovative Spring Compensated Valve Plate Assembly
Features a graphite ring pressure self-sealing structure for dynamic sealing efficiency.Ingeniously designed to enhance sealing force in proportion to increasing pressure.
For environments with high temperatures or frequent temperature fluctuations, we recommend opting for graphite pressure sealing gaskets, which offer superior sealing reliability compared to standard soft iron gaskets, especially under high-temperature and frequent temperature cycle conditions.Exceptional Double Parallel Sliding Gate ValvesThe Double Parallel Sliding Gate Valves utilize an advanced sealing structure consisting of two parallel gates and a wedging device, replacing the conventional wedge gate valve. This innovative design separates sealing mechanism components, preventing jamming even during temperature-induced expansions.
Upon opening, the sealing disk and valve seat disengage and ascend due to the wedge block effect, significantly reducing friction between sealing surfaces. This results in minimal torque, effortless operation, and extended service life. This design effectively addresses challenges such as high torque demand for single gate initiation, sealing surface wear, suboptimal sealing, short lifespan, and high-temperature opening and closing jams, thereby significantly enhancing sealing performance and durability. Production application
Company Profile
SNT Machinery (Qingdao) Co., Ltd. stands as a beacon of innovation in the realm of control valve manufacturing, seamlessly integrating design, production, sales, and service. With a strategic base in the vibrant Qingdao, Shandong province, our sprawling 42,000 m2 facility is a testament to cutting-edge manufacturing excellence, outfitted with state-of-the-art equipment. As a high-tech enterprise, we boast independent intellectual property rights and have embraced advanced global management and production methodologies. Our diverse team of over 150 skilled professionals includes a robust 15% dedicated to R&D, with 30% holding graduate or higher qualifications. Through a synergy of exceptional production management and pioneering R&D, SNT Machinery has forged a reputation for crafting superior quality valves, with a strong presence in the petrochemical, oil, and coal chemical sectors. Our triumphant 2017 saw sales skyrocket to nearly 100 billion.
SNT Machinery prides itself on achieving the esteemed TS Special Equipment Manufacturing Certificate and ISO 9001 certification, alongside the net qualification endorsements from industry titans like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Furthermore, our technological prowess is underscored by an array of National Patents. Our valve offerings span a comprehensive range, compliant with ANSI, API, DIN, BS, and JIS standards. Through the fusion of global valve innovations and proprietary research, we have perfected a diverse catalog: from GLOBE Valves, High-Pressure Boiler Blow-down Valves, and High-performance Butterfly Valves to Angle-regulating Valves, Eccentric Rotary Valves, and beyond.
Our extensive valve portfolio includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves. Driving mechanisms encompass manual, power-driven, pneumatic, and hydraulic operations. The main component materials are of premium grades, such as A216WCB, A217 WC6/WC9, and A351 CF8/CF8M/CF3/CF3M. Specifications range from 1/2"~120", with working pressure from ANSI 150#~2500#, and operational temperatures stretching from -196ºC to 1100ºC.
Backed by sophisticated production technology and a robust quality assurance framework, SNT Valves have become integral to industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Our esteemed clientele includes industry giants like SINOPEC QILU branch, SINOPEC Qingdao branch, CNOOC Huizhou Refinery, PETROCHINA Guangxi branch, and PETROCHINA Ningxia branch, among others, reflecting our unwavering commitment to excellence.
At SNT Machinery, we place the prosperity of our clients at the forefront, pledging ourselves to the creation of exceptional quality and a distinguished brand. Our impeccable quality assurance and dedicated after-sales service systems ensure that SNT valves not only meet but exceed customer expectations, fostering enduring partnerships and shared 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.
