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Design a Check Valve for Stw and Its Test Performance-2006

M Maniruzzaman
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

A K M Saiful Islam
SSO
Farm Machinery and Post Harvest Technology Division, BRRI, Gazipur-1701, Bangladesh

Dr. M A Sattar
CSO and Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

To solve the priming problem of a STW, an experiment was conducted with two designed. An encouraging result was found for using check valve in STW in the tested location. It develops the priming facility of STW and reduced the drudgery for STW starting frequently in the irrigation season. There was no significant difference on discharges and RPM of the pump before and after the installation of a check valve. It also developed the fitting-fixing facility of PVC and plastic pipe distribution system. A field day was organized to show the performance of check valve among the farmers, pump owners, DAE personnel and BRRI scientists. Besides, a survey was conducted among the different stakeholders. All of the stakeholders appreciated the development of check valve, which was a prime need to overcome priming problems and to reduce the drudgery for STW operation. It is concluded from the study that check valve reduce the drudgery of farmers for starting the STW through overcoming the priming problem and also facilitate the pipe irrigation distribution system in STW areas.

Keywords: Check valve, STW, Priming

Location: Vawal Mirzapur, Gazipur

Start Date: 01-07-2005

End Date: 30-06-2006

Program Area: Farm Mechanization

Commodity: Product development

Objectives:

i) To develop the priming facility of STW;

ii) To reduce the drudgery of STW starting;

iii) To improve the fittings-fixing of PVC and plastic pipes for field operations; and

iv) To determine the cost-effectiveness of check valve.

Methodology:

The experiment were designed with following parameters: T₁ = 150 mm x 100 mm diameter check valve with flat plate valve; and T₂ = 150 mm x 100 mm diameter check valve with projected plate valve. Based on the working principles of hand tubewell, a check valve was designed. When the pump started, the valve opened due to upward pressure of water. But when stopped the pump, the valve closed due to downward pressure of water. Water retained up to the delivery point of the pump. When restarting, the pump started to flow without priming. For construction of valve, a rubber valve was setting on a GI pipe of same diameter of suction pipe. A pipe greater than minimum 50 mm diameter of the suction pipe and minimum 150-200 mm long was setting on a valve with flange joint, which facilitate to free movement of the valve. A check valve was setting with the STW depending on the type of pump joint of the tubewell. However, it is, check valve fittings must be leak proof.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2006, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

An encouraging result was found for using check valve in STW in the tested location. It develops the priming facility of STW and reduced the drudgery for STW starting frequently in the irrigation season. There was no significant difference on discharges and RPM of the pump before and after the installation of a check valve. It also developed the fitting-fixing facility of PVC and plastic pipe distribution system. A field day was organized to show the performance of check valve among the farmers, pump owners, DAE personnel and BRRI scientists. Besides, a survey was conducted among the different stakeholders. All of the stakeholders appreciated the development of check valve, which was a prime need to overcome priming problems and to reduce the drudgery for STW operation. It is concluded from the study that check valve reduce the drudgery of farmers for starting the STW through overcoming the priming problem and also facilitate the pipe irrigation distribution system in STW areas.

Knowledge Management: Report/Proceedings