Basic Info.
Model NO.
Y-Type Through Way Drain Valve
Temperature
High Temperature
Structure
Through Way Globe Valve
Sealing Form
Gland Packings Globe Valve
Stem Thread Position
Outside Screw Stem Globe Valve
Application
Lining Fluorine Valve, Needle Type Globe Valve, Cryogenic Globe Valve, Plunger Type Globe Valve, Heat Preservation Globe Valve, Forged Steel Globe Valve, Oxygen Globe Valve, Bellows Globe Valve
Standard
DIN, GB, ANSI, JIS
Type
Through Way Type/Angle Type/Series Type and Y Type
Specifications
DN20/DN25/DN40/DN50/DN65/DN80
Nominal Pressure
ANSI150-ANSI1500
Rated Stroke
25/40/50/60 mm
Fluid Temperature
-20ºC~566ºC
Connection Type
Sw, Bw, Flanged
Flow Control
Continuous Flow Control Conditions
Flow Control Way
Continuous Flow Control Conditions
Leakage Class
0 Leakage (API598)
Materials
Carbon Steel/Alloy Steel/Stainless Steel
Forging Mode
3/4"(DN20) 1"(DN25) /1.1/2"(DN40) 2"(DN50)
Casting Mode 1
ANSI900 and Below Are Connected with Flanges
Casting Mode 2
ANSI1500 and Above Are Butt Welded
Casting Mode 3
Cap of Angle Body: Bolted Connection
Casting Mode
2.1/2"(DN65)/3"(DN80)
Product Description
Standard Mat.Comparison
SNT - Y-TYPE THROUGH DRAIN VALVESizes range from 1" 3/4 (DN20) to 3" (DN80) with ANSI Class 150 up to 1500| Applications | Steam boiler, evaporator and other boiler water intermittent drain control | Manual operation control |
| Nominal pressure | ANSI 150, 300, 600, 900, 1500 | >=ANSI1500 RT
Pressure class >=ANSI1500 for RT test |
| Nominal diameter | Forging mode | 1"(DN25) and 1.1/2"(DN40), 2"(DN50) | ANSI 150, 300, 600, 900, 1500 |
| Casting mode | 2.1/2"(DN65), 3"(DN80) | ANSI 150, 300, 600, 900, 1500 |
| Connection mode | Forging mode | -:Standard connection: SW
- Optional connection: BW or flanged | Pair flanges for option: flat welded flange
Butt welded flange |
| Casting mode | -ANSI900
-ANSI1500
-ANSI900 and below are connected with flanges
-ANSI1500 and above are butt welded
- Cap of Angle body: bolted connection |
| Design calculation | -Y-type stop valve
-CFD
- The size of the seat hole is calculated by strict design
Verified by CFD analysis and testing
-Compound hole plate can be configured for actual high pressure difference conditions
-Suitable for forging and casting
-Heat treatment of valve internals
Valve core: surface hardening or nitriding treatment
Seat: nitriding or surfacing with STL alloy | Replace seat and core quickly
:STELLITE Gr.6
Surface hardening: surfacing STELLITE Gr.6
Surface hardening of the seat; Other options |
| Material | -Carbon steel
-Alloy steel
-Stainless steel
-High quality Alloy steel | A105N
A182-F22
A182-F304(L
A182-F316(L)
As required by customer | |
| Flow control | Intermittent flow control condition | Manual control |
STANDARD MATERIAL COMPARISON SHEET| No. | Part name | Standard material | No. | Part name | Standard material |
| <ANSI 900 | >=ANS|1500 | <ANSI900 | >=ANSI 1500 |
| 1 | Valve body | A105N | A105N | 83 | Screw holder | HBsc2 | HBsc2 |
| 2 | Top cover | A105N | A105N | 85 | Flat head round key | Carbon steel | Carbon steel |
| 3 | Body screw | A193-B7 Colored zinc plating | A193-B7 Colored zinc plating | 86 | Lock nut | Carbon steel + galvanized | Carbon steel + galvanized |
| 4 | Body nut | A194-2H Colored zinc plating | A194-2H Color zinc plating | 87 | Hex socket screws | 304SS | 304SS |
| 5 | Valve core | A276410+HF | 316+S503+S505 | 88 | Nameplate | 304SS | 304SS |
| 6 | Valve seat | A276410+HF | 316+ZY08 | 89 | Connecting flange | Carbon steel | Carbon steel |
| 8 | Wrap shims | 304+GRAPHITE | 304+GRAPHITE | 90 | Limit anti-turn block | Carbon steel + galvanized | Carbon steel + galvanized |
| 9 | Sleeve | 440C+HF | 316+S101 | 91 | Nuts | Carbon steel + galvanized | Carbon steel + galvanized |
| 14 | Wrap shims | 304+GRAPHITE | 304+GRAPHITE | 92 | Thrust needle roller bearings | Bearing steel (standard material | Bearing steel (standard material |
| 17 | Packing plate | A351 CF8 | A351 CF8 | 93 | Hex set screws | 304SS | 304SS |
| 23 | Nuts | A194-2H | A194-2H | 252 | Packing gland | A276410 | A276410 |
| 24 | Screw | A193-B7 | A193-B7 | 255 | Packing assembly | Flexible graphite | Flexible graphite |
| 80 | Support stand pole | Carbon steel + galvanized | Carbon steel + galvanized | 257 | Packing pad | A276410 | A276410 |
| 81 | Hex head bolts | 304SS | 304SS | 572 | Handwheel | Carbon steel | Carbon steel |
1. S101 Hard Surface Technical Description: With a hardness rating of HRC≥55, this surface offers a robust metallurgical combination that ensures durability, minimizing the risk of surface material detachment.
2. S503 Hard Surface Technical Description: With a substantial thickness of 1.5mm and a hardness of HRC≥55, it boasts a binding force of 400MPa, ensuring long-lasting adhesion and stability.
3. S505 Hard Surface Technical Description: Featuring a fine thickness of 0.3mm, this surface achieves exceptional hardness of HRC≥65, with a binding force of ≥250MPa for optimal reliability.About SNT Blow-down Valves
SNT Machinery (Qingdao) Co., Ltd., affectionately known as SNT, stands as a beacon of innovation in valve manufacturing. With a dedicated focus on the cutting-edge development, meticulous design, and superior production of fluid flow and valve technology, SNT continues to lead the industry.
SNT Our state-of-the-art drain valve is versatile, designed for a multitude of applications including continuous throttling control in scenarios such as boiler continuous drainage, high-pressure vessel and reactor sampling, high-pressure discharges, and boiler feed pump bypass system releases. Perfect for high-pressure differential conditions, it thrives in heater drainage processes that direct fluids to condensers, particularly under corrosive and high-flow flash conditions. The SNT valve's robust and durable design outperforms traditional valves, making it ideal for challenging continuous drain situations where high flow rates cause severe erosion that typically damages conventional cutoff and venturi valves.
The SNT Our breakthrough drain valve redefines traditional internal structure design principles. With its innovative smooth-flow channel between the valve core and cylindrical valve seat, fluid acceleration is enhanced until it reaches downstream, where a sudden chamber expansion occurs. This pivotal design causes a pressure drop at the center of the flow channel, prompting rapid fluid expansion toward the center. The result? Quick energy dispersion and fluid evaporation, leading to turbulent conditions. This efficient discharge process enables fluid to form steam upon supersaturation while simultaneously cooling residual liquid, showcasing a masterful application of flash evaporation in liquid flow.
To accommodate diverse device requirements, we manufacture valves within the ANSI 150 to ANSI 2500 pressure range. Starting from a standard stop valve size of 3/4" (DN20), 1" (DN25), 1.1/2" (DN40), 2" (DN50), 2-1/2" (DN65), and 3" (DN80). The standard SNT valve features an angular connection, promoting uniform fluid flow. Additionally, through-way type stop valves are offered. Depending on your control needs, options include manual, pneumatic, and electric control systems. For precision in throttling control, we apply advanced computational fluid dynamics, utilizing Fluent-Code to simulate and analyze the internal-design flow channel and pressure drops. To combat abrasion and corrosion from high-pressure drops and flow rates, all SNT internals are fortified with high-quality Co-Ni based alloys or treated with Cr-N ceramic coatings. Product Description
Rated Flow Coefficient Comparison TableApplication of Typical Working Conditions As depicted in the figure on the left, the installation follows the ASME B31.1 Power Boilers and Piping guidelines, wherein intermittent drain valves are predominantly utilized in Zone 2, directly integrated into the boiler or associated boiler piping. Additionally, the system comprises continuous drain valves, traps, safety valves, and more for comprehensive functionality.
In compliance with §122.1.4 of ASME B31.1, the piping is generally equipped with a dual-valve arrangement, featuring a Y-type intermittent drain valve, complemented by an emergency stop valve for enhanced safety.
The intermittent drain valve is often designed with a lever-type rapid discharge mechanism, enabling swift opening and closing actions. When activated, the valve efficiently expels sediment, dirt, and particles from the boiler's base in under 3 seconds, optimizing resource usage by minimizing water discharge. Its flow channel closely resembles a straight pipeline for optimal efficiency.
The emergency stop valve ensures a rigorous cut-off of the pipeline, serving as a preventive measure against resource wastage should the initial intermittent drain valve encounter malfunction.
Conditions&Solutions
Pressure and Temperature Parameters: Discover the robust capabilities of our ANSI1500 High Pressure & Temperature Boiler Blow-down Valve DN80. Designed to withstand extreme pressures and temperatures, this valve is your ultimate choice for superior performance and safety in high-stakes settings.
Production application
Our Advantages
SNT Ball Valves are expertly crafted to adhere to a wide array of international standards such as ASME B16.34-2009, ASME B16.10-2000, and API 589-2009. This adaptable series is extensively employed in numerous sectors, including petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations, making it an indispensable choice for diverse applications.
Extraordinary Features Include:
Sophisticated, streamlined design for effortless disassembly and reassembly.
Our ball valves are engineered with maintenance simplicity in mind, featuring a non-tight fit design that allows for quick and efficient servicing, significantly reducing downtime during regular maintenance checks.
State-of-the-art sealing technology ensures maximum security and leak prevention.
The multi-layer sealing system of the stem and body delivers robust dual protection using a combination of O-ring and graphite or PTFE, guaranteeing outstanding sealing performance under varying conditions.
This revolutionary design fully complies with the stringent TA-Luft/Shell SPE 77/312 standards, assuring environmental safety and operational excellence.
Extended Service Life for Exceptional Cost-Efficiency
Our metal seated ball valves undergo cutting-edge processing techniques such as spray welding, spraying, and fusion welding. These processes ensure a hardness range of HRC58-73 and a binding force of 80-40MPa, achieving an impressive on-off cycle lifespan exceeding 100,000 operations with a leakage class of ANSI VI, offering exceptional durability and reliability.
Ingenious Modular Design for Enhanced Convenience
The modular inner sealing design allows for seamless interchangeability between soft and metal seats, providing flexibility and reliability to meet various operational needs.
Diverse Connection Types for User-Friendly Integration
Our valves come in a variety of connection types, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW, all meticulously conforming to international standards. This ensures seamless and user-friendly integration into existing systems.
Comprehensive Application Experience Ensures Unwavering Reliability
SNT Valves have garnered a stellar reputation through extensive use in petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide optimal, tailored solutions to meet specific service conditions, ensuring unparalleled reliability and market-leading performance.
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.
