ANSI1500 High Pressure & Temperature Boiler Blow-Down Valve DN80

• 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 - Y-TYPE THROUGH DRAIN VALVE
Sizes 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

<sup>Notes:
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.</sup>

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 Table



Application 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.}

<sup>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.</sup>

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.}

<sup>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.</sup>