Tiansu (Tianjin) Valve Group Co., Ltd. is one of the leading manufacturers and suppliers of silent check valve in China. If you're going to buy wholesale customized silent check valve made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
The quiet check valve operates on a central guide shaft differential pressure shuttle principle with spring-assisted rapid (pre-) closing. When the pump starts, this quiet check valve offers a full flow passage with low resistance for efficient system operation. Main features:
1. The anti-water hammer silent check valve can be installed vertically or horizontally. The flap operates flexibly, smoothly, with low closing noise, safety, and very few faults.
2. Spring-loaded flap enables quick closing, effectively reducing water hammer pressure. Good sealing.
3. Compact, lightweight, low fluid resistance fatigue-resistant, long service life.
Product Application
The anti-water hammer silent check valve is primarily for high-rise building water supply/drainage systems, fire protection pipelines, etc. Effectively prevents destructive water hammer caused by backflow, protecting pumps and other equipment.
Technical Parameters
|
Model |
Nominal Pressure (MPa) |
Shell Test Pressure (MPa) |
Seal Test Pressure (MPa) |
Applicable Medium |
Medium Temp. (°C) |
|
HC41X |
1.0 |
1.5 |
1.1 |
Water & Weakly Corrosive Fluids |
0~80℃ |
|
1.6 |
2.4 |
1.76 |
|||
|
2.5 |
3.75 |
2.75 |
Installation & Maintenance
1. Best installed horizontally. Other orientations are functional but should allow for maintenance access.
2. Before installation, carefully check markings/nameplate against requirements.
3. Thoroughly clean pipeline internals before installation.
4. Pay special attention to flow direction. Normal flow must match the arrow on the body.
5. Otherwise, the quiet check valve will block normal flow.
6. Tighten connecting bolts evenly and symmetrically.
Faults & Remedies
|
Fault Phenomenon |
Possible Causes |
Remedies |
|
Connection Seepage |
1. Uneven bolt tightening. 2. Flange face damaged. 3. Gasket ruptured/failed. |
1. Tighten bolts evenly. 2. Re-machine/repair. 3. Replace gasket. |
|
Seal Face Seepage |
1. Contaminants on seal face. 2. Seal face damaged. |
1. Remove contamination. 2. Re-machine or replace. |
FAQ
Q: What is the key benefit of a the quiet check valve?
A: Its rapid, controlled closing action minimizes or eliminates the slam and associated water hammer noise and pressure surge common in conventional swing check valves.
Q: How does the spring assist in this anti-water hammer silent check valve's operation?
A: The spring helps initiate closing before flow completely reverses, ensuring faster closure and reduced water hammer compared to gravity/closing weight alone.
Q: Is horizontal installation mandatory for this quiet check valve?
A: While horizontal is optimal for performance and spring action, this quiet check valve can be installed in other orientations if necessary, provided maintenance access is considered.
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