High-Temp Metal Hard Sealed Butterfly Valve

I. Product Overview

High-Temp Metal Hard Sealed Butterfly Valve is engineered for high-temperature industrial media, featuring a double-eccentric structure and metal hard sealing. Designed with a compact wafer connection, it balances lightweight construction with robust performance, handling gases, oil, and water in demanding environments. Constructed from durable materials (WCB, CF8, CF8M) and compliant with API 609 standards, it supports diverse actuation modes (manual, worm gear, electric, pneumatic) to meet shut-off and regulation needs across the industrial, water, and energy sectors.

II. Key Attribute Parameters

Size Range: DN50~DN600 (2″~24″), covering small to large-diameter pipelines to adapt to process loops, heating systems, and high-temperature transmission lines.

Pressure Rating: Class 150 (20 Bar) and Class 300 (50 Bar), suitable for low to medium-high pressure applications, with full vacuum compatibility.

Temperature Range: -40℃~400℃, with metal hard sealing maintaining stability across thermal cycles, ideal for high-temperature steam and industrial fluids.

Material Configuration:

Valve Body: Cast carbon steel (WCB), stainless steel (CF8, CF8M) for corrosion resistance, ensuring structural integrity under thermal stress.

Seal Surface: Metal hard sealing (alloy-coated) for wear resistance, with optional fire-safe designs to meet high-temperature safety requirements.

Stem: Extended design with anti-blowout structure, made of 316 stainless steel for strength and corrosion resistance.

Connection Type: Wafer or lug type, complying with EN 558 Series 20 and API 609 Table 5 face-to-face dimensions, enabling compact installation between pipeline flanges.

Operation Modes: Manual (hand lever), worm gear (reducing torque), electric, or pneumatic, with ISO 5211 top flange for standardized actuator mounting.

Standards Compliance: Design per API 609; flange standards per EN 1092 PN10/16, ANSI Class 150; testing per ISO 5208 Category 3 and API 598.