Sw/Bw/Flanged/Y-Type High Temperature Boiler Blow-Down Valve - DN40 Specifications

• Customization: Available
• Media: Gas
• Temperature: High Temperature
• Model NO.: Y-Type Through Way Drain Valve
• Actuator: Pneumatic
• Material: Carbon Steel
• 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)
• Transport Package: Wooden
• Trademark: SNT
• Origin: China
• HS Code: 8481804090
• Production Capacity: 500000PCS/Year

Product Description

Standard Mat.Comparison

 

SNT Machinery - A Pioneer in Precision Engineering - Y-TYPE THROUGH DRAIN VALVE: Exemplifying Unmatched Efficiency and Resilience
Available in sizes ranging from 1"3/4 (DN20) to an impressive 3" (DN80), with ANSI Class ratings from 150 to a robust 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: A Detailed Guide to Excellence

^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

<sup>Important Notes:
1. S101 hard surface technical description: With a hardness rating of HRC≥55, this surface ensures a metallurgical combination that is remarkably resistant to detachment.
2. S503 hard surface technical description: Featuring a thickness of 1.5mm and a hardness level of HRC≥55, it boasts a binding force of 400MPa, ensuring durability and resistance to wear.
3. S505 hard surface technical description: This surface provides an ultra-thin thickness of 0.3mm, an impressive hardness of HRC≥65, and a binding force of ≥250MPa, setting a high standard for performance.</sup>

About SNT Blow-down Valves

SNT Machinery (Qingdao) Co., Ltd. (simply known as SNT) is a prestigious valve manufacturing enterprise with a core focus on the innovation, design, and creation of advanced fluid flow and valve technology solutions.

SNT Our state-of-the-art drain valves boast remarkable versatility for continuous throttling control applications such as: boiler consistent drain operations, high-pressure vessel and reactor sampling, high-pressure discharge, and boiler feed pump bypass system release. They excel in high-pressure differential scenarios and heater to condenser drainage processes, often challenged by corrosion and high-velocity flashing. Unlike traditional valves, the SNT valve is engineered for enhanced durability and robustness, making it the ideal choice for demanding continuous drain conditions where high flow rate and severe erosion typically compromise valve integrity. Conventional cutoff drain valves and even venturi valves often fail under these strenuous conditions.

The SNT drain valve redefines internal structure design paradigms with its innovative approach. The flow channel, ingeniously crafted between the valve core and cylindrical valve seat, features a smooth design to facilitate accelerated fluid flow. Upon reaching the valve seat's downstream, the chamber expands significantly. This expansion causes a strategic pressure drop, prompting rapid fluid expansion towards the flow center. Consequently, the fluid's energy swiftly disperses and evaporates, transitioning into a turbulent state. This efficient discharge process allows supersaturated fluid to form steam while cooling any residual liquid, exemplifying an optimal use of flash evaporation within liquid flow systems.

To cater to diverse device requirements, we manufacture valves across a comprehensive pressure range from ANSI 150 up to ANSI 2500. The standard size range for stop valves includes 3/4" (DN20), 1" (DN25), 1.1/2" (DN40), 2" (DN50), 2-1/2" (DN65) and 3" (DN80). SNT valves are primarily available in angular connection form, assuring uniform fluid flow. We also offer the through-way type stop valves. Depending on control requirements, valves are available with manual, pneumatic, and electric control options. Precision throttling is ensured through the utilization of the Fluent-Code computational Fluid Dynamics for flow channel and pressure drop simulation and analysis, based on SNT's proprietary internal-design structure. All SNT internals are typically surface-hardened with premium Co-Ni based alloys or treated with Cr-N ceramic coatings to combat abrasion and corrosion from high pressure drops and flow conditions.


 

 

Product Description

Rated Flow Coefficient Comparison Table: Dive into our comprehensive table that provides a detailed comparison of rated flow coefficients, showcasing the advanced capabilities of the Y Type High Temperature Boiler Blow-down Valve - DN40 Specifications.



Application of Typical Working Conditions: Discover how the Y Type High Temperature Boiler Blow-down Valve excels across a range of typical working conditions, offering unparalleled functionality and ensuring optimal performance for your systems.
 

^{As shown in the figure on the left, according to ASME B31.1 Power Boilers and Piping, intermittent drain valves are usually used in Zone 2 and are installed directly in boiler or boiler piping. There are also continuous drain valves, traps, and safety valves, etc., ensuring comprehensive system management.}

<sup>According to §122.1.4 of ASME B31.1 Power Boilers and Piping, the piping is usually fitted with 2 valves in series, a Y-type intermittent drain valve and an emergency stop valve.

The intermittent drain valve usually adopts the lever type rapid discharge mechanism, which can realize the rapid opening and closing, ensuring swift response to operational demands. When 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, maximizing efficiency.

The emergency stop valve is used to realize the strict cut-off of the pipeline and prevent the waste of resources when the previous intermittent drain valve fails, ensuring an additional layer of protection and efficiency for your high-temperature systems.</sup>

Conditions&Solutions

Pressure and Temperature Parameters: Experience the resilience and durability of the Y Type High Temperature Boiler Blow-down Valve, expertly crafted to perform under high pressure and temperature conditions. This valve ensures optimal operation and safety, making it an essential component in any high-performance system.

 

Production application

 

 

Our Advantages

^{SNT Ball Valves are masterfully crafted to meet a wide array of international standards, including the esteemed ASME B16.34-2009, ASME B16.10-2000, and API 589-2009. This adaptable series is ideal for numerous industries such as petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations, ensuring top-tier performance and reliability.}

<sup>Their Remarkable Features Include:
Effortlessly streamlined design for quick disassembly.
Engineered with a focus on maintenance efficiency, our ball valves offer a non-tight fit design, enabling rapid servicing. This greatly reduces downtime during scheduled maintenance, keeping operations smooth and continuous.

State-of-the-art sealing technology for unparalleled security.
The multi-layer sealing of both stem and body provides dual-layer protection through a sophisticated blend of O-ring and either graphite or PTFE, ensuring outstanding sealing effectiveness.
This groundbreaking design adheres to the stringent TA-Luft/Shell SPE 77/312 standards.

Prolonged Service Life for Maximum Cost-Efficiency
Our metal-seated ball valves are enhanced through advanced processes such as spray welding, spraying, and fusion welding. This ensures a formidable hardness range of HRC58-73 and a robust binding force of 80-40MPa, supporting an extraordinary on-off cycle life that exceeds 100,000 operations with a leakage class of ANSI VI.

Modular Design for Superior Adaptability
The modular inner sealing design permits easy interchangeability between soft and metal seats, providing adaptable and dependable performance.

Diverse Connection Types for Optimal User Convenience
Our valves are offered in a variety of connection types such as flanged (RF, FF, FM, G, RJ), screw-thread, and BW, all adhering to international standards. This ensures hassle-free and seamless integration for users worldwide.

Comprehensive Application Experience Assures Dependability
SNT Valves have garnered an excellent reputation through widespread utilization in petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide superior solutions meticulously tailored to specific service conditions, guaranteeing market-leading dependability.</sup>