Series Type High Pressure & Temperature Boiler Blow-Down Valves DN40

• Customization: Available
• Media: Gas
• Temperature: High Temperature
• Model NO.: SERIES DRAIN VALVE
• Actuator: Manual
• Material: Carbon Steel
• Structure: Through Way Globe Valve
• Sealing Form: Gland Packings Globe Valve
• Stem Thread Position: Outside Screw Stem 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-ANSI2500
• Rated Stroke: 25405060 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: Standard Connection: Sw/Optional Connection: Bw or
• Casting Mode 1: ANSI900 and Below Use Flange Connections
• Casting Mode 2: ANSI1500 and Above Are Butt Welded Connections
• Casting Mode 3: Cap of Angle and Straight Through Body: Bolted
• Transport Package: Wooden
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 500000PCS/Year

Product Description

Standard Mat.Comparison

 

 

^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

About SNT Blow-down Valves

SNT Machinery (Qingdao) Co., Ltd., affectionately known as SNT, is a forward-thinking valve manufacturing powerhouse. We excel in innovating, designing, and crafting cutting-edge fluid flow and valve technology.

SNT Our robust drain valves at SNT are versatile and engineered for excellence in continuous throttling control. Their applications are wide-ranging, including but not limited to: boiler continuous drains, high-pressure vessel and reactor sampling, high-pressure discharge, boiler feed pump bypass system release, and processes involving high-pressure differentials (pressure release). They are also ideal for heater drains leading to condenser processes, where corrosion and high flow rate flashing conditions prevail. Compared to conventional valves, SNT valves promise superior durability and resilience, tailored for challenging continuous drain conditions that typically wreak havoc on standard valves. Traditional cutoff drain valves and even venturi valves often succumb to the harsh conditions of high flow rates and severe erosion, but our SNT valves stand strong.

The innovative SNT drain valve reinvents traditional internal structure design. The streamlined flow channel between the valve core and the cylindrical valve seat ensures a seamless acceleration of fluid flow until it reaches the valve seat's downstream. Here, the chamber expands dramatically, leading to a pressure drop that swiftly centralizes the flow. This ingenious design disperses fluid energy, facilitating rapid evaporation and creating turbulent conditions. Such an efficient discharge process is instrumental in forming steam from supersaturated fluids, simultaneously cooling the remaining liquid. This is the hallmark of leveraging flash evaporation within liquid flow dynamics.

To accommodate diverse device needs, we produce valves within a pressure range from ANSI 150 to ANSI 2500. Our standard stop valve sizes include 3/4" (DN20), 1" (DN25), 1.1/2" (DN40), 2" (DN50), 2-1/2" (DN65), and 3" (DN80). SNT valves typically feature an angular connection, optimizing fluid flow uniformity. We also offer through-way type stop valves. These valves can be manually operated or controlled pneumatically and electrically. For precise throttling control, our SNT internal-design structure utilizes the power of Computational Fluid Dynamics with Fluent-Code for detailed simulation and analysis of flow channels and pressure drops. All SNT internals are safeguarded against abrasion and corrosion from high-pressure drops and flow rates, thanks to surface hardening with premium Co-Ni based alloys or Cr-N ceramic coatings.



 

Product Description

SNT: Where innovation meets precision, SNT Machinery (Qingdao) Co., Ltd. is a leader in advanced valve technology. - SERIES DRAIN VALVE: Experience superior performance with our Series Drain Valve, crafted for versatility and endurance.
3/4"(DN20)~3"(DN80) ANSI Class 150~1500: Our versatile solution is available in sizes ranging from 3/4 inches (DN20) to 3 inches (DN80), accommodating ANSI Class 150 to 1500 for varied industrial applications.
 

^Applications		^-Steam boiler, evaporator and other boiler water continuous drain control-Flow and pressure regulation and flash application-Steam boiler, evaporator and other boiler water intermittent drain control		^Manual operation control
^Nominal pressure		^ANSI 150, 300, 600, 900, 1500		^Pressure class >=ANSI1500 for RT test
^Nominal diameter	^Forging mode	^3/4 "(DN20), 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
	^Casting mode	^-ANSI 900 and below with flange connections-ANSI1500 and above are butt welded- Cap of Angle body: bolted connection		^Metal self-sealing structure form for option
^Design calculation		^-Angular connection- Under the condition of high pressure difference, two or more Angle valves are used for fluid pressure precise control-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, casting, bar stock- Heat treatment of valve internalsValve core: surface hardening or nit riding treatmentSeat: Nit riding or surfacing with STL alloy		^Other hole types: Conical hole/labyrinth runnerSurface hardening: surfacing STELLITE Gr.6Surface hardening of seat: Other options
^Material		^-Carbon steel- Alloy steel- Stainless steel High quality Alloy steel	^A105N, A182-F22A182-F304(L),A182-F316(L)As required by customer

 

<sup>Notes: Essential insights into our product's robust design and reliability.
1. S101 hard surface technical description: With an impressive hardness of HRC≥55, our S101 hard surface boasts a metallurgical combination ensuring durability and resistance to wear, making it an ideal choice for demanding conditions.
2. S503 hard surface technical description: Engineered with a 1.5mm thickness and a hardness of HRC≥55, the S503 surface incorporates a binding force of 400MPa, ensuring it stays intact under extreme pressures.
3. S505 hard surface technical description: Featuring a sleek 0.3mm thickness, the S505 surface excels with a hardness of HRC≥65 and a binding force of ≥250MPa, offering unmatched performance in severe environments.</sup>



Rated flow coefficient comparison table: Explore our comparison table to understand the superior flow dynamics of our valves.



Application of Typical Working Conditions: Discover how our blow-down valves adapt seamlessly to various operational scenarios.
 

^{As shown in the figure: The illustration provides a visual understanding of our product integration. on the left, according to ASME B31.1 Power Boilers and Piping, intermittent drain: valves are strategically employed in Zone 2 applications, directly installed within the boiler or its valves are usually used in Zone 2 and are installed directly in boiler or boiler piping: architecture, ensuring optimal performance and reliability.. There are also continuous drain: solutions available, including valves, traps, and safety systems, designed for seamless operation. valves, traps, and safety valves, etc.: An array of options to enhance safety and efficiency in boiler systems.}

<sup>According to §122.1.4 of ASME B31.1 Power Boilers and Piping, the piping: system is fortified with a strategic configuration of 2 valves in series, including a Y-type intermittent drain: valve and a robust emergency stop valve. valve and an emergency s top: Designed to deliver unparalleled safety and functionality.valve. The intermittent: drain valve employs a cutting-edge lever-type rapid discharge mechanism, enabling swift opening and closing actions.

drain: mechanism, ensuring swift sediment removal. drain: valve usually adopts the lever type rapid discharge mechanism, which can realize the rapid opening and closing. valve usually adopts the lever type rapid discharge mechanism, which can realize the rapid opening and closing. When: activated, it efficiently expels sediment, dirt, and particles within 3 seconds, preserving resources and maintaining system integrity. the valve is opened, the sediment, dirt and other particles at the bottom of the boiler can be discharged quickly, no more than 3S. If the time is too long, a large amount of boiler water will be discharged, resulting in a great waste of resources. The flow channel is close to the straight pipeline.

The emergency: stop valve serves as a critical safeguard, ensuring a complete pipeline shutdown to prevent resource wastage in the event of an intermittent valve failure. stop valve: An essential component ensuring absolute control and safety. is used to realize the strict cut-off of the pipeline and prevent the waste of resources when the previous intermittent drain: valve fails, maintaining system integrity and efficiency. valve fails.</sup>

Conditions&Solutions

Pressure and Temperature Parameters: Explore the precise pressure and temperature parameters engineered into our state-of-the-art Series Type High Pressure & Temperature Boiler Blow-down Valves DN40, designed to withstand the challenges of high-pressure applications with unmatched efficiency.

SNT Valve Advantages

 

^{1. SNT Machinery (Qingdao) Co., Ltd. stands as a dynamic industry leader, expertly integrating design, development, production, sales, and service in its trade-oriented enterprise model.}

<sup>2. Experience unparalleled quality, competitive pricing, and exceptional service. Our team of dedicated professionals consistently delivers innovative and effective solutions tailored to your unique challenges.
3. Comprehensive Manufacturing Excellence We proudly hold Manufacture for Special Equipment Type Test Certificates, a testament to our rigorous standards and commitment to excellence.</sup>

^{4. Adhering strictly to ISO9001 and API SPECQ standards, we meticulously develop necessary control methods, processes, and equipment, including cutting-edge inspection and testing tools. This ensures seamless compatibility and cohesion across design, manufacturing, inspection, testing, installation, and service, resulting in a holistic and efficient system.}

<sup>5. Our outstanding research and development team boasts nearly 100 patented innovations, driving our continuous advancement at the forefront of technology.
6. SNT Machinery is an expert enterprise providing comprehensive integrated solutions for Control Valves and their associated actuators across various industries, including Petroleum, Chemical, Power, Storage Tank, Air Separation, Coal Chemical, and Liquefied Natural Gas. Experience the efficiency and reliability of our solutions today.</sup>

 

Production application

 

 

Company Profile