Standard No.:	JB/T 8691-2013
English Name:	Bonnetless Knife Gate Valves
Chinese Name:	无阀盖刀形闸阀
Professional Classification:	JB    Professional Standard - Machinery
Source Content Issued by:	MIIT
Issued on:	2013-4-25
Implemented on:	2013-9-1
Status:	superseded
Superseded by:	JB/T 8691-2025 Bonnetless knife gate valves JB/T 8691-2026
Superseded on:	2026-9-1
Abolished on:	2026-09-01
Superseding:	JB/T 8691-1998 Wafer knife gate valves
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1~3 business day

本标准规定了无阀盖刀形闸阀的术语和定义、参数与结构、型号、材料、技术要求、试验方法、检验规则、标志、供货与包装和定货需知。
本标准适用于额定压力0.25MPa、0.6MPa、1.0MPa，公称尺寸DN50~DN900，工作温度0～200℃，工作介质为含颗粒或粉末等固体的流体，对夹式连接无阀盖刀形闸阀。
阀门不适用于存在冲击载荷工况。