GB/T 18691.3-2011
Agricultural irrigation equipment.Irrigation valves.Part 3:Check valves (English Version)

Standard No.

GB/T 18691.3-2011

Language

Chinese, Available in English version

Release Date

2011

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2022-07

Replace By

GB/T 18691.3-2021

Latest

GB/T 18691.3-2021

Replace

GB/T 18691-2002

Scope

This part of GB/T 18691 specifies the design requirements, performance requirements, conformity assessment, marking and packaging of check valves. This section applies to irrigation systems where the water temperature does not exceed 60°C and the water may contain certain types and concentrations of fertilizers or chemicals commonly used in agriculture. This section applies to hydraulically driven irrigation check valves with a nominal size not less than DN15. The design working state of the check valve is fully open and fully closed, but it can also work for a long time in any intermediate state.

GB/T 18691.3-2011 Referenced Document

• GB/T 18688-2002 Agricultural irrigation equipment--Pressure losses in irrigation valves--Test method
• GB/T 18691.1-2011 Agricultural irrigation equipment.Irrigation valves.Part 1:General requirements

GB/T 18691.3-2011 history

• 2021 GB/T 18691.3-2021 Agricultural irrigation equipment—Irrigation valves—Part 3: Check valves
• 2011 GB/T 18691.3-2011 Agricultural irrigation equipment.Irrigation valves.Part 3:Check valves
• 2002 GB/T 18691-2002 Agricultural irrigation equipment--Check valves

GB/T 18691.3-2011 Agricultural irrigation equipment.Irrigation valves.Part 3:Check valves has been changed from GB/T 18691-2002 Agricultural irrigation equipment--Check valves.

GB/T 18691.3-2011 -All Parts