Silent Type Check Valve
Product Overview
Silent Type Check Valve is designed to prevent reverse flow in water supply, HVAC, fire protection, and pumping systems while minimizing water hammer and flow noise.
The valve utilizes a spring-assisted disc design that enables rapid closing before flow reversal occurs, reducing pressure surges and protecting pipelines, pumps, and related equipment.
Available in heavy-duty ductile iron construction with standard flange connections, featuring high-grade stainless steel and bronze internal components.
Product Parameter
| Parameter | Specification Details |
| Product Name | Silent Type Check Valve |
| Main Material | Ductile Iron |
| Surface Finishing | Epoxy Red or Blue |
| Working Pressure | 1.0 MPa, 1.6 Mpa, 2.5 Mpa |
| Size | 50mm, 65mm, 80mm, 100mm, 125mm, 150mm, 200mm, 250mm, 300mm |
| Connection | Flange end |
| Media | Water |
| Temperature Range | 0℃ - 80℃ |
| Leakage Class | Class A |
Product Material
Part | Material |
Body | Ductile Iron QT450-10 |
Stem | 304 Stainless Steel |
Disc | Ductile Iron |
Spring | 304 Stainless Steel |
Bolt | 304 Stainless Steel |
Seal | NBR |
Bushing | Bronze |
Why Choose Our Silent Type Check Valve
The spring-assisted design enables rapid closure before flow reversal, mitigating hydraulic shock and system vibration.
Precision-lapped seating verified by API 598 or EN 12266-1 pressure testing minimizes the risk of micro-leakage.
A fluid-dynamics optimized flow path reduces internal turbulence, contributing to lower pressure drop and pumping energy costs.
Smooth disc travel and spring closure effectively reduce pipeline vibration and operating noise.
The guided disc design minimizes uneven seat wear, while stainless steel springs ensure reliable repeated operation under continuous industrial cycles.
Typical Applications
Municipal water supply, transfer, and distribution networks.
Commercial building HVAC, chilling systems, and cooling towers.
Industrial pumping loops and raw water treatment plants.
High-pressure fire protection line backflow prevention.
International Standards & Compliance
Our Silent Type Check Valves are designed, manufactured, and tested in strict accordance with global industrial standards:
Design & Manufacturing
ASME B16.34, API 594
Face-to-Face Dimensions
EN 558 Series 10, ASME B16.10
Flange Drilling Compatibility
ANSI/ASME B16.1 Class 125/150, EN 1092-2 PN16/PN25, BS 4504
Pressure Inspection & Testing
API 598, EN 12266-1
Manufacturing Strength & Quality Assurance
As an ISO 9001 certified manufacturer, we mitigate your purchasing risks through rigorous process control:
Material Traceability
All castings are sourced from verified foundries. Every batch comes with a unique heat number and Material Test Report (MTR) matching EN 10204 3.1 standards.
CNC Precision Machining
Critical components, including the seat and disc, are machined on advanced CNC centers to ensure tight tolerances, flawless concentricity, and perfect alignment.
In-House Testing Facility
Our factory is equipped with high-capacity hydraulic and pneumatic test benches. 100% of our valves undergo strict pressure testing before packing, and test charts can be provided with your shipment.
FAQ
Hot Tags: silent type check valve, China silent type check valve manufacturers, suppliers, factory, 3 Inch Flanged Check Valve, 4 Inch Swing Check Valve, check valve, Ductile Iron Swing Check Valve, Grooved Swing Check Valve, Silent Type Check Valve
You Might Also Like
Send Inquiry