Applicable for spring water pressure testing! It can be attached to the water level measurement pipe, allowing for the valve to be instantaneously opened at the start of the test.
The "trip valve" is used to determine the equilibrium water level, permeability coefficient, and hydraulic head of confined water in rock formations. The water inflow pressure test is considered essential in mountain tunnel investigations and provides necessary values for seepage flow analysis during underground facility construction. Additionally, it allows for the monitoring of rapid groundwater declines and rises within the rock, enabling the prediction of locations where sudden water inflow may occur. 【Features】 ■ Used to determine the equilibrium water level, permeability coefficient, and hydraulic head of confined water in rock formations ■ Applicable for water inflow pressure tests ■ Predicts locations where sudden water inflow may occur ■ Rental period starts from a minimum of 5 days *For more details, please refer to the PDF materials or feel free to contact us.
Inquire About This Product
basic information
【Specifications】 ■ Female thread: AQ rod type ■ Male thread: JIS 40.5 type ■ Type that opens the valve by pressing the spring with a water level gauge with a weight attached *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
【Purpose】 ■ To determine the equilibrium water level, permeability coefficient, and hydraulic head of confined water in rock formations ■ Artesian pressure testing ■ Permeability testing of rock using the in-situ water level recovery method *For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Shimauchi Engineering Co., Ltd. has been involved in a wide range of ground-related activities since its establishment, from dam surveys to soft ground analysis, accumulating a wealth of achievements in investigations, testing, analysis, and studies on the impact of underground environments. We are also committed to innovating creative technologies to meet the diversifying social needs. Moving forward, we will continue to contribute to the construction of a sustainable and prosperous society based on the technology, experience, and trust we have cultivated.
![[Labor-saving Equipment] Auto-head "Drill Press" Vertical Type / Horizontal Type](https://image.mono.ipros.com/public/product/image/380/2000292550/IPROS7190834913987274295.png?w=280&h=280)