Reliable Spring Loaded Double Parallel Sliding Gate Valves for Suspended Particles

• Customization: Available
• Media: Gas
• Temperature: High Temperature
• Model NO.: AOC-9033
• Type: Straight-through
• Material: Stainless Steel
• Connection Form: Flange
• Pressure: High Pressure
• Actuator: Electric
• Seal Surface: Parallel Gate Valve
• Thread Position of Valve Rod: Inside Gate Valve
• Usage: Regulation, Safety, Emptying, Drain, Temperature Control, Flow Control
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Medium: Gas/ Suspended Particles/Fibers
• Actuator Conbination: Pneumatic Cylinder Actuator
• Standards: API/Sil
• 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
• Body Rating: ANSI150-1500
• Transport Package: Plywood Case
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000/Year

Product Description

Product Description

<sup>Discover the unparalleled excellence of our spring loaded double parallel sliding gate valve. Engineered with precision, it offers a substantial advantage over traditional wedge gate valves by delivering a significantly reduced operating torque and a more compact drive size. The innovative internal design features an INCONEL butterfly spring, replacing the conventional coil spring, ensuring seamless assembly within the valve body. Its unique compensation structure design effectively prevents jamming, even under high-temperature conditions, eliminating issues from adhesion and wedge extrusion. Engineered for longevity and superior performance, the valve plate and seat surfaces are fortified with a hard alloy overlay welding and surface spraying of Co-Cr-Ni alloy, WC, or boron compounds, achieving a remarkable surface hardness of HRC90 or higher. This advanced hardening provides not only durability but also an exceptional self-cleaning function, ensuring reliability in demanding environments.

Versatility meets efficiency with our spring-loaded double parallel sliding gate valve. It offers seamless compatibility with a range of actuator options, including pneumatic actuators, electric actuators, electro-hydraulic actuators, and manual actuators, providing unparalleled flexibility to suit your operational needs.</sup>

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

 

^{The pressure seal bonnet boasts an advanced high-density pure graphite gasket, ensuring superior sealing and reliability.
An innovative overpressure protection device is integrated into the bonnet to guard against excessive pressure, enhancing safety and durability.
Features a spring preloaded flat gate valve, combining precision engineering with robust performance.
Designed with a relatively wide valve seat and gate, offering enhanced stability and sealing efficiency.
Equipped with a limit device on the support rod for precise control and operational safety.
Incorporates an anti-rotation device on the valve stem, ensuring consistent performance and durability.
Features differentiated hardness on both ends of the sealing surface to prevent wear; a hardness difference of approximately 5HRC: gate - STLG#, valve seat - STL12#, ensuring longevity and reliability.
Utilizes a conical design for bonnet sealing, guaranteeing a tight and secure fit.
Supports bidirectional flow to enhance flexibility and adaptability in various applications.
Incorporates two thrust bearings and aluminum bronze sleeves, offering smooth operation and added durability.
Provides a sophisticated structure for bypass piping, optimizing flow management.}

Spring Compensated Valve Plate Assembly

Employs a graphite ring pressure self-sealing structure, ensuring robust and reliable sealing under pressure.

^{Ingeniously designed to increase sealing force with rising pressure, maximizing sealing integrity.
In high-temperature or rapidly fluctuating temperature conditions, we highly recommend utilizing graphite pressure sealing gaskets as a superior alternative to standard soft iron gaskets, perfect for high-temperature and frequent temperature cycling applications.}

Double Parallel Sliding Gate Valves

<sup>The Double Parallel Sliding Gate Valves feature an innovative sealing structure with two parallel gates and a wedging device, replacing the conventional wedge gate valve structure. This innovative mechanism ensures continuous sealing even under temperature-induced deformations, preventing jamming caused by thermal expansion.

Upon opening, the valve's sealing disk and seat disengage before rising due to the wedge block effect, significantly reducing friction on sealing surfaces. This results in minimal torque requirements for easy operation and an extended service life. This design effectively resolves issues such as the significant lifting force needed for single gate initiation, wear on sealing surfaces, suboptimal sealing, brief service life, and high-temperature jamming, thereby enhancing both the valve's sealing proficiency and longevity.</sup>


 

Production application

Company Profile

<sup>SNT Machinery (Qingdao) Co., Ltd, a premier producer of control valves, seamlessly integrates manufacturing, design, sales, and service. Our company thrives on innovation and dynamic growth, strategically located in Qingdao, Shandong province, sprawling over an expansive 42,000m2. Equipped with cutting-edge workshops and production technology, SNT stands as a beacon of high-tech excellence, boasting independent intellectual property rights and leveraging globally advanced management practices. With a dedicated team exceeding 150 employees-15% of whom are R&D specialists and 30% holding advanced degrees-SNT is committed to delivering superior quality. Our innovative production management and pioneering R&D efforts yield high-caliber valves, pivotal in petrochemical, oil, and coal chemical industries, achieving a remarkable sales milestone nearing 100 billion in 2017.

At SNT, we proudly hold the TS Special Equipment Manufacturing Certificate and ISO 9001 accreditation, having secured prestigious qualifications from industry giants like SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. We boast an array of national patents, underscoring our technological prowess. Our expertise encompasses designing and manufacturing a full spectrum of valves adhering to ANSI, API, DIN, BS, and JIS standards. By harnessing the strengths of globally renowned valve technologies and fostering independent R&D, SNT crafts an extensive range of valves including GLOBE, High Pressure Boiler Blow-down Valves, High-performance Butterfly Valves, Angle-regulating Valves, Eccentric Rotary Valves, and T Three-eccentric Center Butterfly Valves.
Our product line extends to V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, and Cryogenic Valves, among others. We offer diverse driving mechanisms such as manual, power-driven, pneumatic, and hydraulic operations. Our main components utilize premium materials like A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc., with specifications ranging from 1/2" to 120", supporting working pressures from ANSI 150# to 2500# and operational temperatures spanning -196ºC to 1100ºC.

SNT Valves, fortified by sophisticated production technology management and a robust quality assurance framework, find widespread application across petrochemical, oil, steel & iron, paper manufacturing, and power station sectors. Our esteemed clientele includes industry leaders like SINOPEC QILU, SINOPEC Qingdao, CNOOC Huizhou Refinery, PETROCHINA Guangxi, PETROCHINA Ningxia, and many more, affirming our unwavering commitment to quality and excellence.

At SNT, we prioritize our customers' success, dedicating ourselves to building a brand synonymous with outstanding quality and reliability. Our comprehensive quality assurance and after-sales services ensure that SNT Valves forge enduring partnerships with our clients, fostering mutual growth and prosperity.</sup>