Heavy-Duty Spring Loaded Double Parallel Sliding Gate Valves with API Standards

• 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>The innovative Heavy-Duty Spring Loaded Double Parallel Sliding Gate Valve with API Standards, presents a game-changing alternative to the traditional wedge gate valve. Experience a significant reduction in operating torque and drive size, thanks to its cutting-edge design. The internal valve plate is enhanced with an INCONEL butterfly spring, replacing the conventional coil spring, which facilitates effortless assembly within the valve body. Its unique compensation structure ingeniously mitigates the risk of jamming under high temperature conditions, effectively countering problems like adhesion and wedge extrusion. Additionally, the valve plate and seat surfaces are reinforced through advanced processes such as hard alloy overlay welding and surface spraying with Co-Cr-Ni alloy, WC, or boron, achieving an impressive surface hardness level of HRC90 or higher. This comprehensive hardening provides exceptional self-cleaning capabilities, ensuring peak performance and longevity.

Versatility is at the heart of the Heavy-Duty Spring Loaded Double Parallel Sliding Gate Valve's design, as it seamlessly integrates with various actuation systems, including pneumatic, electric, electro-hydraulic, or manual actuators. This adaptability ensures that our valve meets the precise demands of a wide range of industrial applications, providing unmatched reliability and ease of use.</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

 

^{Our high-performance valve features a pressure seal bonnet meticulously crafted with a high-density pure graphite gasket, ensuring exceptional sealing efficiency and reliability.
An advanced overpressure protection device is ingeniously integrated into the bonnet, safeguarding against any excessive pressure build-up for enhanced operational safety.
Equipped with a spring preloaded flat gate valve, this product is engineered for optimal performance under varying conditions.
Featuring a relatively expansive valve seat and gate, the design facilitates a robust and secure closure, enhancing durability and functionality.
Incorporates a precision limit device on the support rod, ensuring precise and reliable operation throughout its lifecycle.
An innovative anti-rotation device on the valve stem affords additional stability, preventing any unintended movements.
The valve's sealing surface showcases a strategic hardness distinction between its ends, minimizing wear and tear significantly (difference of approximately 5HRC): gate - STLG#, valve seat - STL12#.
The bonnet's sealing is ingeniously designed with a conical structure, promising a superior seal under various conditions.
Our valve allows for bidirectional flow, providing versatile application possibilities and enhanced efficiency.
Equipped with two thrust bearings and crafted with aluminum bronze sleeves, our valve ensures smooth operation and increased longevity.
The design includes a thoughtfully available structure for bypass piping, enhancing its functional scope.}

Spring Compensated Valve Plate Assembly

The graphite ring pressure self-sealing structure promises enhanced sealing capabilities under a range of operational pressures.

^{Ingeniously designed, the sealing force of the valve increases with rising pressure, ensuring optimal performance and reliability.
In environments with high or fluctuating temperatures, we recommend substituting standard soft iron gaskets with graphite pressure sealing gaskets for superior performance and reliability during high-temperature and frequent temperature cycle applications.}

Double Parallel Sliding Gate Valves

<sup>Our Double Parallel Sliding Gate Valves feature an innovative sealing structure, utilizing dual parallel gates and a wedging device in lieu of conventional wedge gate valve structures. This design ensures unerring sealing even amidst temperature fluctuations, preventing operational jamming due to thermal expansion.

During valve operation, the sealing disk and valve seat initially disengage and subsequently ascend due to the wedge block mechanism, significantly reducing friction at the sealing surfaces. This means reduced torque, easier operation, and an extended service life. This advanced design overcomes challenges like the substantial lifting force necessary for single gate activation, potential sealing surface wear and tear, poor sealing efficacy, short lifespan, and issues with high-temperature opening or closing jamming, thereby amplifying the valve's sealing performance and durability.</sup>


 

Production application

Company Profile

<sup>SNT Machinery (Qingdao) Co., Ltd. stands as a leading authority in the realm of control valves, seamlessly integrating manufacturing, design, sales, and service under one roof. With a strategic base in the picturesque Qingdao, Shandong province, the company spans an impressive 42,000 square meters of cutting-edge workshop and production facilities. As a high-tech powerhouse, SNT boasts independent intellectual property rights and integrates sophisticated management and production expertise from around the globe. Our team comprises over 150 dedicated professionals, with 15% being experts in research and development and 30% holding graduate degrees or higher. Leveraging a top-tier production management team and avant-garde R&D capabilities, SNT churns out high-caliber valves for the petrochemical, oil, and coal chemical sectors. In 2017 alone, our sales soared to nearly 100 billion.

SNT has proudly obtained the TS special equipment manufacturing certificate and ISO 9001, and we are accredited with the net qualification certificates of SINOPEC, CNOOC, PETROCHINA, and SINOCHEM. Additionally, we hold numerous National Patents across various technological domains. Our ability to design and manufacture a comprehensive range of valves according to international standards like ANSI, API, DIN, BS, and JIS is unmatched. By merging the strengths of globally renowned valves with our proprietary research and development, SNT has mastered the art of producing a variety of valves, including GLOBE, High Pressure Boiler Blow-down, High-performance Butterfly, Angle-regulating, and Eccentric Rotary Valves, among others.
Our extensive valve portfolio further includes V Ball Valves, High Wear-resistant Ball Valves, High Pressure Steam Valves, Micro-flow Control Valves, Self-operated Control Valves, Cryogenic Valves, and more. We offer diverse driving forms such as manual, power-driven, pneumatic, and hydraulic drives. The main materials employed include A216WCB, A217 WC6/WC9, A351 CF8/CF8M/CF3/CF3M, etc. Specifications range from 1/2" to 120", with working pressures from ANSI 150# to 2500#, and temperature resilience spanning -196ºC to 1100ºC.

Leveraging cutting-edge production technology and quality assurance systems, SNT's valves are trusted across industries such as petrochemical, oil, steel & iron, paper manufacturing, and power stations. Esteemed clients include branches of SINOPEC (QILU, Qingdao, Changling, Jinan), CNOOC Huizhou Refinery, and PETROCHINA (Guangxi, Ningxia), solidifying our reputation as a trusted partner in industrial excellence.

At SNT, we prioritize the profitability of our users, dedicating ourselves to building an emblem of superior quality and an eminent brand. Our impeccable quality assurance and after-sales systems ensure that SNT valves not only meet but exceed expectations, forming a prosperous alliance with all our customers.</sup>