气动上展阀
商品详情
性能特点
技术参数
动上展阀产品概述
气动上展阀是一种采用气动执行机构驱动的特殊结构阀门，通过阀杆的垂直升降运动实现流体的通断控制。该产品采用"上展式"设计（阀瓣向上开启），特别适用于含有固体颗粒、高粘度或易结晶介质的工况，广泛应用于化工、冶金、污水处理等行业。
气动上展阀核心技术特点：
气动上展阀独特结构设计
上展式阀瓣结构（阀瓣向上开启）
无滞留区设计，防止介质堆积
阀杆导向结构确保运行平稳
气动上展阀密封性能：
金属硬密封（限耐温600℃）
可选软密封（PTFE）实现零泄漏
自清洁式阀座设计
气动上展阀执行机构：
气动活塞式/薄膜式执行器
可选单作用（弹簧复位）或双作用
防爆型（Ex dⅡCT6）可选
气动上展阀特殊工况适应：
耐磨阀瓣设计（可堆焊硬质合金）
防结晶加热夹套可选
适用于真空至4.0MPa压力范围
气动上展阀安全与维护
阀杆防飞出结构
气动上展阀在线维护设计
符合API 598密封测试标准
气动上展阀关键术语对照表：
中文English上展式结构Rising stem design无滞留区No stagnant zone自清洁阀座Self-cleaning seat防结晶夹套Anti-crystallization jacket阀杆防飞出Stem blow-out proof硬质合金堆焊Hard-faced alloy
注：可根据实际需求补充材料标准（如ASTM A216 WCB）或特殊认证（如SIL2）。
Pneumatic Rising Stem Valve Product Overview
The pneumatic rising stem valve is a specially designed valve with pneumatic actuation, featuring vertical stem movement for fluid shut-off. Its "rising" design (disc lifts upward) makes it ideal for handling media with solids, high viscosity crystallization tendency, widely used in chemical, metallurgical wastewater treatment industries.
Core Technical Features:
Unique Structural Design
Rising stem design (disc lifts upward)
No stagnant zone to prevent media accumulation
Guided stem ensures smooth operation
Excellent Sealing Performance
Metal hard seal (up to 600℃)
Optional soft seal (PTFE) for bubble-tight shut-off
Self-cleaning seat design
Reliable Actuation
Pneumatic piston/diaphragm actuators
Single-acting (spring return) double-acting options
Explosion-proof (Ex dⅡCT6) available
Special Application Adaptability
Wear-resistant disc (hard-faced alloy optional)
Anti-crystallization heating jacket
Suitable for vacuum to 4.0MPa pressure range
Safety & Maintenance
Stem blow-out proof structure
Online maintenance capability
Complies with API 598 seal test standard