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 VALVE1"3/4(DN20)~3"(DN80) ANSI Class 150~1500| 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 an impressive hardness of HRC≥55, the S101 provides a robust metallurgical combination that ensures exceptional durability and resistance to detachment, making it less likely to fall out.
2. S503 Hard Surface Technical Description: Featuring a thickness of 1.5mm and a hardness of HRC≥55, the S503 is engineered with a binding force of 400MPa, ensuring it remains steadfast and resistant to detachment.
3. S505 Hard Surface Technical Description: This premium surface boasts a thickness of 0.3mm, an impressive hardness of HRC≥65, and an exceptional binding force of ≥250MPa, delivering superior durability and resilience.About SNT Blow-down Valves
SNT Machinery (Qingdao) Co., Ltd., affectionately known as SNT, stands as a beacon in the valve manufacturing industry, specializing in the cutting-edge development, innovative design, and precision production of fluid flow and valve technology. Our company is synonymous with quality and expertise.
SNT The robust SNT drain valve is engineered for excellence in continuous throttling control across a range of demanding applications. Its prowess shines in scenarios like boiler continuous drain, sampling from high-pressure vessels and reactors, high-pressure discharge management, boiler feed pump bypass release, and handling high-pressure differences. Moreover, it excels in heater drain processes leading to condensers, especially under conditions of corrosion and high flow rate flash. Unlike traditional valves, the SNT valve boasts unparalleled durability, making it the go-to solution for continuous drain environments that traditionally wreak havoc on other valve types. In such scenarios, where high flow rates and severe erosion are prevalent, conventional cutoff and venturi valves pale in comparison.
The SNT drain valve pioneers a groundbreaking internal structure design. Its flow channel, expertly crafted between the valve core and cylindrical seat, is sleek and streamlined, optimizing fluid acceleration. As the fluid advances downstream beyond the valve seat, the chamber expands dramatically, promoting a significant pressure drop at the center of the flow channel. This ingenious design facilitates rapid fluid expansion towards the channel's core, dissipating energy swiftly and transitioning the fluid into a dynamic turbulent state. This process not only ensures the fluid forms steam when supersaturated but also cools the residual liquid through flash evaporation-a hallmark of efficient liquid flow management.
In our commitment to satisfying diverse operational requirements, SNT offers an extensive range of valves manufactured to ANSI pressure standards. 150 to ANSI 2500. Our standard stop valves boast an array of sizes, starting from 3/4" (DN20), 1" (DN25), 1.1/2" (DN40), 2" (DN50), to 2-1/2" (DN65) and 3" (DN80). The SNT valve's standard form is engineered with an angular connection, ensuring a harmonious and uniform fluid flow. Additionally, through way type stop valves are readily available. Depending on control needs, SNT valves are classified into manual, pneumatic, and electric control variations. For precision throttling, our valves are developed using a Fluent-Code computational Fluid Dynamics simulation to meticulously analyze flow channels and pressure drops. To combat abrasion and corrosion due to high pressure drops and flow velocities, all SNT internals are fortified with surface treatments of high-quality Co-Ni based alloys or Cr-N ceramic coatings, ensuring longevity and superior performance. Product Description
Comprehensive Rated Flow Coefficient Comparison TableApplication in Real-world Working Conditions As beautifully illustrated in the remarkable figure on the left, and adhering to the esteemed ASME B31.1 Power Boilers and Piping standards, intermittent drain valves are typically utilized in Zone 2, installed seamlessly in boiler systems or their associated piping. Additionally, there exist continuous drain valves, alongside traps, safety valves, and more, ensuring comprehensive system protection.
Per the detailed specifications of §122.1.4 of ASME B31.1 Power Boilers and Piping, the piping is strategically equipped with dual valves in series: a Y-type intermittent drain valve coupled with an essential emergency stop valve for optimal safety.
The intermittent drain valve boasts a lever-type rapid discharge mechanism, facilitating swift opening and closure with utmost efficiency. Upon activation, the valve adeptly expels sediment, dirt, and particulates from the boiler's base with lightning speed-under 3 seconds. Extended discharge could inadvertently deplete substantial boiler water, leading to resource wastage. The flow channel is ingeniously designed akin to a direct pipeline.
The pivotal emergency stop valve is engineered to ensure a precise cut-off of the pipeline, safeguarding against resource depletion in the event that the preceding intermittent drain valve encounters a malfunction.
Conditions&Solutions
Pressure and Temperature Parameters: Discover the advanced engineering behind our Series Type High Pressure & Temperature Boiler Blow-down Valve DN40. Our product is meticulously designed to withstand extreme pressure and temperature conditions, ensuring unwavering performance and safety. Trust in our cutting-edge technology for uncompromised operational excellence.
Production application
Our Advantages
SNT Ball Valves are crafted with precision, adhering to an extensive array of global standards, including ASME B16.34-2009, ASME B16.10-2000, and API 589-2009. This dynamic series serves a broad spectrum of industries such as petroleum, chemical industry, light industry, pharmaceuticals, paper-making, metallurgy, and power stations, demonstrating exceptional versatility.
Their Remarkable Features Include:
A streamlined design that ensures effortless disassembly and reassembly.
Engineered with intuitive maintenance in mind, our ball valves boast a non-tight fit design for expedited servicing, significantly reducing downtime during routine maintenance.
State-of-the-art sealing technology for unparalleled security.
The multi-layer sealing of stem and body provides dual-layer protection using a combination of O-ring and graphite or PTFE, delivering superior sealing capabilities.
This pioneering design complies with the stringent TA-Luft/Shell SPE 77/312 standards.
Prolonged Service Life for Exceptional Cost-Effectiveness
Our metal seated ball valves undergo sophisticated processing techniques including spray welding, spraying, and fusion welding. This ensures a hardness range of HRC58-73 coupled with a binding force of 80-40MPa, boasting a remarkable on-off cycle lifespan exceeding 100,000 operations, along with a leakage class of ANSI VI.
Modular Design for Superior Convenience
The modular inner sealing design provides effortless interchangeability between soft and metal seats, allowing for unmatched flexibility and dependability.
Diverse Connection Types for Maximum User Convenience
Our valves are available in a wide range of connection types, such as flanged (RF, FF, FM, G, RJ), screw-thread, and BW, all aligned with international standards, ensuring seamless integration and ease of use.
Rich Application Experience Assures Unmatched Reliability
SNT Valves have established an exemplary reputation through widespread application in industries such as petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide optimal solutions tailored to specific service conditions, ensuring market-leading reliability and 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.
