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Safety Valve
Shut-Off Valve
Designed for emergency shutdown and safety interlock, rapidly closes under abnormal conditions. Critical safety equipment for chemical and gas pipelines.
Inquire Now →Product Overview
Shut-off valves are safety-critical devices designed to rapidly stop media flow during emergencies, process upsets, or safety interlock triggers. Commonly used in SIS (Safety Instrumented Systems) for the petrochemical, chemical, and gas industries, these valves ensure plant and personnel safety.
Our shut-off valves meet SIL 2 / SIL 3 certification requirements and feature spring-return fail-safe actuation with partial stroke testing (PST) capability.
Key Features
- SIL Certified: Designed and tested to IEC 61508 / 61511 for safety applications
- Fail-Safe Action: Spring-return actuator closes on loss of power or air
- Partial Stroke Testing: Online testing without process interruption
- Fire-Safe Design: API 607 / ISO 10497 certified fire-safe construction
- Rapid Closure: Full stroke under 2 seconds for emergency response
Technical Specifications
Safety LevelSIL 2 / SIL 3
OperationSpring Return (FC/FO)
Closure Time< 2s (standard)
Size RangeDN15 ~ DN400
产品概述
切断阀是安全关键设备，用于在紧急情况、工艺异常或安全联锁触发时快速切断介质流动。广泛应用于石化、化工和燃气行业的 SIS（安全仪表系统），保障装置和人员安全。
我们的切断阀满足 SIL 2 / SIL 3 认证要求，采用弹簧复位故障安全驱动，具备部分行程测试（PST）功能。
核心特点
- SIL 认证：按 IEC 61508 / 61511 设计和测试
- 故障安全：失气或断电时弹簧复位自动关闭
- 部分行程测试：在线测试，无需中断工艺
- 防火安全：API 607 / ISO 10497 认证防火结构
- 快速关闭：紧急响应全行程 2 秒以内
技术规格
安全等级SIL 2 / SIL 3
操作方式弹簧复位（FC/FO）
关闭时间< 2s（标准）
口径范围DN15 ~ DN400