API 598/0 Leakage/ANSI 150-ANSI 2500/High Pressure & Temperature Boiler Blow-Down Valve - Through Way Type

• 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: Enjoy a robust HRC≥55 with a metallurgical bond that ensures durability and resistance against wear, making it difficult for the surface to detach.
2. S503 hard surface technical description: Built with a 1.5mm thickness and a remarkable hardness of HRC≥55, this surface boasts an impressive binding force of 400MPa, ensuring a steadfast hold that resists detachment.
3. S505 hard surface technical description: Offering a delicate 0.3mm thickness while achieving a superior hardness of HRC≥65, this surface promises a binding force of ≥250MPa, ensuring unmatched durability.</sup>

About SNT Blow-down Valves

SNT Machinery (Qingdao) Co., Ltd. (known as SNT) stands at the forefront of valve innovation, focusing on the pioneering development, design, and production of cutting-edge fluid flow and valve technology.

SNT Our advanced drain valve is your ideal solution for continuous throttling control in demanding applications such as: boiler continuous drainage, high-pressure vessel and reactor sampling, and high-pressure discharge. It is also perfect for the boiler feed pump bypass system release device, high-pressure differential scenarios, and heater drains to condenser operations under corrosive and high-flow flash conditions. Unlike traditional valves, the SNT valve is engineered to be exceptionally robust and durable, specifically designed for continuous drain environments that can severely impair other valves. In these conditions, high flow rates and severe erosion can quickly compromise conventional cutoff drain valves-even venturi valves-but not the SNT valve.

The SNT drain valve revolutionizes conventional internal structure design. By employing a streamlined flow channel between the valve core and cylindrical seat, this design accelerates fluid until it reaches the downstream valve seat, where the chamber's sudden expansion induces a significant pressure drop. This causes the fluid to rapidly expand towards the flow center, efficiently dissipating energy, evaporating, and entering a turbulent state. This sophisticated discharge process ensures that the fluid can transition to steam when supersaturated, whilst also cooling any remaining liquid-a brilliant demonstration of utilizing flash evaporation in liquid flow systems.

To cater to diverse device requirements, we manufacture valves across the pressure spectrum 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 are typically designed with an angular connection to facilitate uniform fluid flow. However, through-way type stop valves are available as well. Depending on your control needs, they can be manually operated or automated via pneumatic or electric systems. For precision throttling control, our flow evaluations leverage advanced computational fluid dynamics via the Fluent-Code. This simulation analyzes the flow channel and pressure drop within the SNT internal-design structure. To combat abrasion and corrosion from high pressures and flow rates, all SNT internals are surface-hardened with premium Co-Ni based alloys or Cr-N ceramic coatings.


 

 

Product Description

Rated Flow Coefficient Comparison Table: Explore our detailed comparison table that highlights the exceptional performance metrics of our valve, showcasing its superior rated flow coefficient. This table serves as an invaluable tool for understanding how our product outperforms competitors in rigorous conditions.



Application of Typical Working Conditions: Our valve is designed to excel in demanding environments, offering robust solutions for various industrial applications. This section articulates the versatility and adaptability of our product in typical working scenarios, ensuring it meets the rigorous standards set by ASME B31.1 Power Boilers and Piping.
 

^{As shown in the figure on the left, according to ASME B31.1 Power Boilers and Piping, intermittent drain valves are usually employed in Zone 2, boasting seamless integration when directly installed in boiler or boiler piping. Also featured are continuous drain valves, traps, and safety valves, each contributing to the overall safety and efficiency of your system.}

<sup>In accordance with §122.1.4 of ASME B31.1 Power Boilers and Piping, the piping is expertly equipped with 2 valves in series, featuring a Y-type intermittent drain valve and a highly reliable emergency stop valve for maximum safety and performance.

The intermittent drain valve incorporates a lever type rapid discharge mechanism, enabling swift opening and closing, ensuring operational efficiency. When activated, the valve quickly expels sediment, dirt, and other particles from the boiler's base in less than 3 seconds, minimizing water wastage and optimizing resource conservation. The flow channel design mimics a straight pipeline, enhancing the valve's efficacy.

The emergency stop valve is vital for achieving a stringent pipeline cut-off, safeguarding resources when the preceding intermittent drain valve encounters malfunction, ensuring uninterrupted system integrity.</sup>

Conditions&Solutions

Pressure and Temperature Parameters: Dive into the world of precision and efficiency with our High Pressure & Temperature Boiler Blow-down Valve - Through Way Type DN20. Specifically engineered to withstand the rigorous demands of your industry, this product guarantees exceptional performance in managing both high-pressure and high-temperature conditions. Trust in our meticulous attention to detail and superior design, which enable seamless integration and unparalleled reliability in your system.

 

Production application

 

 

Our Advantages

^{SNT Ball Valves are exquisitely crafted to adhere to a wide array of international standards, including the esteemed ASME B16.34-2009, ASME B16.10-2000, and API 589-2009. This adaptable series seamlessly integrates into a multitude of industries like petroleum, chemical sector, light industry, pharmaceuticals, paper-making, metallurgy, and power stations, showcasing its remarkable versatility.}

<sup>Their Exceptional Features Include:
Ingeniously streamlined for effortless disassembly.
Engineered with maintenance simplicity in mind, our ball valves boast a non-tight fit design that facilitates quick and easy servicing, significantly reducing downtime during routine maintenance checks.

State-of-the-art sealing technology for supreme protection.
The innovative multi-layer sealing of the stem and body offers dual protection with an O-ring and graphite or PTFE, delivering unparalleled sealing performance.
This avant-garde design complies with the stringent TA-Luft/Shell SPE 77/312 standards.

Extended Longevity for Optimal Cost-Efficiency
Our metal seated ball valves are subjected to advanced processing techniques like spray welding, spraying, and fusion welding. This ensures a hardness range of HRC58-73 and a robust binding force of 80-40MPa. Additionally, they boast a remarkable on-off cycle lifespan exceeding 100,000 operations with a superior leakage class of ANSI VI.

Modular Design for Superior Convenience
The modular internal sealing design enables effortless interchangeability between soft and metal seats, ensuring ultimate flexibility and steadfast reliability.

Diverse Connection Types for Maximum User Convenience
Our valves are offered 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 across various systems.

Vast Industry Experience Ensures Unrivaled Reliability
SNT Valves have garnered an exceptional reputation through extensive application in petroleum, chemical sector, light industry, pharmaceuticals, paper-making, metallurgy, and power stations. We provide optimal solutions tailored to specific service conditions, guaranteeing market-leading reliability.</sup>