Low pressure gate valve Description
Low-pressure gate valve is a shut-off valve with a nominal pressure of ≤1.6MPa. It controls the flow of fluid by vertically lifting the gate. It is suitable for normal temperature and low-pressure medium scenarios. It is significantly different from high-pressure gate valves in terms of sealing form and structural strength. Its core features are as follows:
Structural composition and core components
Main structure
Valve body and bonnet: mostly made of cast iron or cast steel, the low-pressure valve body is flattened in cross section to reduce the structural length, and flange connection is the main method;
Gate: Parallel double gates (elastic compensation) or wedge-type single gate, the sealing surface uses non-metallic materials (such as PTFE, NBR) to improve low-pressure sealing;
Valve stem: rising stem structure, trapezoidal thread and handwheel linkage, visible opening and closing stroke;
Sealing system: The valve seat and gate soft seal are matched, the stuffing box uses O-rings or flexible graphite, and the leakage level meets ISO 5208 standards.
Assisted Design
Flow channel optimization: The full-diameter design reduces the fluid resistance coefficient (≤0.1) and is suitable for low-flow medium;
Lightweight: The valve body wall thickness is thinner, and the overall weight is reduced by 30%-50% compared with similar high-pressure valves.
Low pressure gate valve Specification
| item | value |
| structure | Gate |
| application | General |
| place of origin | China |
| power | manual |
| customized support | OEM, ODM, Software reengineering, obm, odm |
| port size | 1.6~8 inch |
| warranty | 3 years |
| temperature of media | Normal Temperature |
| brand name | GNEE |
| media | Other |
Low pressure gate valve
Application and function
Municipal water supply
Application scenario: urban tap water transmission network, secondary water supply pump room; Function: full-bore design to avoid impurity deposition, soft seal to prevent low-pressure leakage.
Heating, ventilation and air conditioning (HVAC)
Application scenario: chilled water circulation system, central air conditioning cooling tower; Function: lightweight valve body adapts to pipe support load requirements, low flow resistance reduces pump energy consumption.
Food and beverage
Application scenario: pure water filling line, dairy product delivery pipeline; Function: non-metallic sealing material meets FDA standards to avoid medium contamination.
Sewage treatment
Application scenario: sedimentation tank drainage control, sludge delivery pipeline; Function: anti-particle scouring structure extends valve life, bidirectional seal adapts to medium counterflow.
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