Cast Steel Hard-Sealed Butterfly Valve DN150 Price – Designed for High Temperature and High Pressure Conditions
For these demanding scenarios, the cast steel hard-sealed butterfly valve DN150is the reliable solution. Engineered with a metal-to-metal sealing interface and a robust cast steel body, this valve is specifically built to withstand extreme temperatures and high pressures while maintaining a tight shutoff. This article provides a comprehensive 2026 price reference and outlines the critical selection parameters for this heavy-duty component.The main Butterfly Valve product names of China Butterfly Valve Network include:Electric Desulfurization Wafer Butterfly Valve,Electric Desulfurization Flange Butterfly Valve,Fire Signal Butterfly Valve,Flange Soft-sealed Butterfly Valve,Flange Insulation Butterfly Valve,Flange Ceramic Hard-sealed Butterfly Valve,Flange Metal Sealed Swing Butterfly Valve,Groove Butterfly Valve,Hydraulic Control Butterfly Valve.
2026 Price Reference for Cast Steel Hard-Sealed Butterfly Valve DN150
The price of a DN150 (6-inch) cast steel hard-sealed butterfly valve varies widely depending on the design complexity, pressure rating, and sealing structure. Based on current market data from Chinese manufacturers and industrial distributors, the following reference ranges apply for manual worm-gear operated models:
For a standard concentric or double-offset hard-sealed design with a WCB cast steel body and a hardfaced seat (e.g., Stellite or 13Cr), the typical factory-direct price falls between ¥680 and ¥1,200 per unit. This bracket covers most general high-temperature applications up to 300°C.
For a triple eccentric (or triple-offset) hard-sealed valve, which offers superior zero-leakage performance and a longer cycle life, prices are significantly higher, ranging from ¥1,500 to ¥2,800 per unit. The triple eccentric design minimizes friction between the disc and seat during operation, making it the preferred choice for critical high-pressure and high-temperature services.
For premium or imported brands, or for valves with special alloy materials (such as CF8M stainless steel or high-temperature alloys), prices can exceed ¥4,000 per unit.
It is important to note that these prices are for manual worm-gear operated valves. Adding electric or pneumatic actuators will add substantial cost, often doubling or tripling the base price. As always, bulk orders (e.g., 10 or more units) can secure volume discounts of 10% to 20% from most manufacturers.
Why Hard-Sealed Design is Essential for High Temperature and High Pressure
The core advantage of a hard-sealed butterfly valve lies in its all-metal construction. Unlike soft-seated valves that rely on elastomers or plastics, hard-sealed valves use a metallic sealing pair – typically the disc and the seat are coated with wear-resistant alloys such as Stellite, tungsten carbide, or hardened stainless steel. This design enables the valve to handle continuous operating temperatures up to 425°C for WCB cast steel and even higher for alloy steel bodies, making them ideal for superheated steam, thermal oil, and high-temperature gas applications.
Moreover, the hard seal provides excellent resistance to erosion from high-velocity fluids and abrasive particles, which are common in refinery and petrochemical processes. The metal seat also ensures stable performance under thermal cycling, as it expands and contracts at similar rates to the body, maintaining a reliable seal even after hundreds of cycles.
Key Selection Parameters for DN150 Hard-Sealed Butterfly Valves
When specifying a cast steel hard-sealed butterfly valve for your high-temperature and high-pressure system, you must pay close attention to the following technical parameters to ensure the valve meets your operational requirements.
The cast steel hard-sealed butterfly valve DN150 is the workhorse for high-temperature and high-pressure applications, offering unmatched durability and reliable shutoff in steam, thermal oil, and aggressive process media. As of 2026, prices for a standard hard-sealed model range from approximately ¥680 to ¥1,200, while premium triple-offset designs command ¥1,500 to ¥2,800 or more. When selecting your valve, pay careful attention to the pressure-temperature rating, sealing structure (concentric, double-offset, or triple-offset), material grades, and actuator compatibility. For the most competitive and accurate pricing, contact manufacturers directly with your detailed technical specifications and desired quantities – this ensures you receive a product that is both cost-effective and perfectly matched to your challenging operating conditions.
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