DINKONDA GLOBAL Power Plants Special Class150LB~Class600LB Flange Connection

Product Specification

DINKONDA GLOBAL Power Plants Special Class150LB~Class600LB Flange Connection American Standard Low-temperature Extended Long Neck Valve Cover Globe Valve,One-way Shut-off Valve

Product Overview
This series of American standard low-temperature globe valves has a pressure rating of Class150LB~Class600LB, flange connection, and adopts an extended long neck valve cover structure, specially designed for low-temperature working conditions. Extending the valve cover can reduce the transfer of cold to the packing box, avoid frost and ice formation in the packing area, and ensure reliable packing sealing and valve stem movement. The product is designed and manufactured in accordance with API and ASME low-temperature valve standards. The valve body material is selected from low-temperature carbon steel and austenitic stainless steel, suitable for liquefied gas and low-temperature process medium pipelines, achieving the cutting and throttling of pipeline media, and widely used in air separation units LNG, Coal chemical industry, low-temperature storage and transportation industry, etc.

Structural Composition
1. Valve body: flanged straight through valve body, RF raised flange, in compliance with ASME B16.5 standard; The materials used are LCB, CF8, CF8M and other low-temperature specialized materials to ensure material toughness under low-temperature conditions and prevent low-temperature brittle fracture.

2. Valve seat and disc: The sealing surface is welded with hard alloy, which is resistant to erosion and abrasion; Forced sealing structure, when closed, the valve disc presses tightly against the valve seat to achieve a tight seal, meeting the low leakage requirements of low-temperature media.

3. Extended long neck valve cover: a low-temperature dedicated long valve cover structure that isolates cold conduction of low-temperature media, protects the packing components, and prevents the packing from freezing and jamming the valve stem; The valve cover is connected by bolted flanges, making disassembly and maintenance easy.

4. Valve stem component: with a visible stem structure, it can intuitively determine the valve opening degree; Select low-temperature resistant stainless steel, which has undergone quenching and tempering nitriding treatment, is resistant to low-temperature corrosion, and has flexible movement.

5. Packing box component: using low-temperature specialized packing, suitable for low-temperature environments, with good resilience and sealing performance to prevent medium leakage; The pre tightening force of the packing gland bolt can be adjusted on site.

6. Drive handwheel: blue manual operation handwheel, clockwise closed, counterclockwise open; Pneumatic and electric actuators can be selected as needed to achieve remote control.

Product Features
1. Long neck valve cover low-temperature special design: effectively blocks the conduction of cold, avoids frost and ice formation at the packing, ensures long-term reliable valve stem action and sealing, and is the core structure of low-temperature valves.

2. Low temperature material guarantee: The valve body and pressure bearing components are made of low-temperature tough materials and undergo low-temperature impact testing to avoid the risk of low-temperature brittleness.

3. Excellent sealing performance: The sealing surface is welded with hard alloy, which is resistant to erosion and has stable sealing at low temperatures. The leakage level meets the requirements of the process system.

4. American standard system: pressure rating Class150-600LB, flange size follows ASME B16.5, valve body design follows ASME B16.34, compatible with international project matching.

5. Visible opening of visible stem: The valve stem extends outward, allowing for direct observation of the valve opening and closing status on site, facilitating maintenance and inspection.

6. Easy maintenance: The valve cover is bolted together, and the packing, valve stem, and internal components can be inspected and replaced online without the need to dismantle the valve body as a whole.