ANSI 150-ANSI 2500/on-off for Flow Characteristic/Through Way Type High Pressure Boiler Blow-Down Valve DN25 with Carbon Steel Materials

• 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
1"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

<sup>Notes:
1. S101 Hard Surface Technical Description: Boasting a hardness of HRC≥55, this metallurgical combination ensures longevity by preventing detachment.
2. S503 Hard Surface Technical Description: With a substantial thickness of 1.5mm and a remarkable hardness of HRC≥55, this surface binds with a force of 400MPa, ensuring durability and resistance against detachment.
3. S505 Hard Surface Technical Description: Featuring an ultra-thin thickness of 0.3mm, this surface exhibits extraordinary hardness of HRC≥65 and a binding force of ≥250MPa, providing exceptional protection.</sup>

About SNT Blow-down Valves

SNT Machinery (Qingdao) Co., Ltd. (proudly known as SNT) stands at the forefront of innovation in valve manufacturing, excelling in the cutting-edge design, development, and production of advanced fluid flow and valve technology solutions.

Experience SNT Our robust drain valve is expertly crafted for versatile applications, offering unparalleled performance in continuous throttling control. Ideal for challenging scenarios like boiler continuous drain, reactor sampling, and high-pressure vessel discharge, it excels under extreme pressure release conditions. Unlike traditional valves, the SNT valve is engineered for durability and resilience, making it the perfect choice for continuous drain environments prone to high flow rates and erosion. Traditional cutoff and even venturi valves pale in comparison to the strength and longevity of the SNT solution.

The SNT Advantage breaks new ground with its innovative internal structure design. The valve's streamlined flow channel between the core and cylindrical seat accelerates fluid movement until it reaches the downstream, where the chamber expands dramatically. This design innovation causes a pressure drop at the core, prompting rapid fluid expansion and creating turbulence. The efficient discharge capability ensures fluid transformation into steam upon supersaturation, simultaneously cooling the remaining liquid. This is an exemplary application of flash evaporation within liquid flow.

To cater to diverse device requirements, SNT offers valves across a wide 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). Employing an angular connection form, the SNT valve ensures smooth and consistent fluid flow. The through way type stop valves are also crafted with precision. Based on control preferences, options include manual, pneumatic, and electric control mechanisms. For precise throttling control, SNT employs sophisticated Computational Fluid Dynamics simulations to evaluate flow channels and pressure drops, using Fluent-Code technology. All internal components are surface-hardened with premium Co-Ni based alloys or treated with Cr-N ceramic coatings to combat abrasion and corrosion, maintaining integrity under high pressure and flow conditions.


 

 

Product Description

Rated Flow Coefficient Comparison Table: A detailed breakdown of the performance benchmarks that define the superior functionality of our innovative blow-down valve, ensuring you get the best results in every scenario.



Application of Typical Working Conditions: Discover the versatility and adaptability of our valve across various demanding environments, engineered to meet the challenges head-on and deliver outstanding performance.
 

^{As shown in the figure on the left, according to ASME B31.1 Power Boilers and Piping, intermittent drain valves are most commonly utilized in Zone 2, where they are seamlessly integrated into the boiler or boiler piping. There are also continuous drain valves, traps, and safety valves, etc., designed to enhance system reliability and safety.}

<sup>According to §122.1.4 of ASME B31.1 Power Boilers and Piping, the piping is typically equipped with a sequential arrangement of 2 valves: a Y-type intermittent drain valve paired with an emergency stop valve for maximum efficiency and safety.

The intermittent drain valve often features a lever-type rapid discharge mechanism, fostering swift opening and closing actions. When the valve is engaged, it allows for the quick expulsion of sediment, debris, and other particulates from the boiler's base within a swift 3 seconds. Exceeding this discharge time risks unnecessary boiler water loss, leading to resource inefficiency. The flow pathway closely mimics a straight pipeline.

The emergency stop valve ensures a secure pipeline shut-off to avert resource wastage should the preceding intermittent drain valve encounter a malfunction.</sup>

Conditions&Solutions

Pressure and Temperature Parameters: Unlock the full potential of your operations with our Through Way Type High Pressure Boiler Blow-down Valve DN25, meticulously crafted to withstand rigorous pressure and temperature ranges. Our cutting-edge technology guarantees optimal functionality, ensuring precision and safety in every application.

 

Production application

 

 

Our Advantages

^{SNT Ball Valves are expertly crafted to adhere to a diverse array of prestigious international standards, including ASME B16.34-2009, ASME B16.10-2000, and API 589-2009. This versatile series showcases its prowess across a breadth of industries such as petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations, making it an essential component in these sectors.}

<sup>Distinguished Features That Set Us Apart:
A sleek and streamlined design ensures effortless disassembly for quick and efficient servicing.
Our ball valves are designed with user convenience in mind. The non-tight fit construction simplifies maintenance, enabling rapid servicing and reducing downtime during regular maintenance checks.

State-of-the-art sealing technology ensures the utmost security and reliability.
The multi-layer sealing system of both stem and body offers dual protection, utilizing a combination of O-ring and graphite or PTFE for outstanding sealing performance and peace of mind.
This groundbreaking design adheres to the stringent TA-Luft/Shell SPE 77/312 standards, ensuring top-tier quality and dependability.

Prolonged Service Life Offering Exceptional Cost-Efficiency
Through advanced processing techniques such as spray welding, spraying, and fusion welding, our metal seated ball valves achieve an impressive hardness range of HRC58-73 and a binding force of 80-40MPa. With an outstanding operation cycle lifespan exceeding 100,000 on-off cycles and a leakage class of ANSI VI, these valves deliver enduring value and performance.

Modular Design for Superior Flexibility and Convenience
The modular inner sealing design facilitates easy interchangeability between soft and metal seats, providing flexibility and ensuring reliability with every application.

Diverse Connection Options for Enhanced User Convenience
Our valves come in a variety of connection types, including flanged (RF, FF, FM, G, RJ), screw-thread, and BW. These options conform to international standards, ensuring seamless integration and user-friendly operation in any setting.

Proven Reliability Through Extensive Application Experience
SNT Valves have garnered an impeccable reputation thanks to extensive application in petroleum, chemical, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide optimal solutions tailored to specific service conditions, guaranteeing market-leading reliability and performance.</sup>