Wafer Butterfly Check Valve
Product Overview
The Wafer Butterfly Check Valve is designed to prevent reverse flow in pipeline systems while maintaining low pressure loss and a compact installation profile. Its dual-disc, spring-assisted design enables quick closing action and helps reduce the impact of flow reversal.
Suitable for water supply, wastewater treatment, HVAC, fire protection, and general industrial applications.
Product Parameter
| Parameter | Specification Details |
| Product Name | Wafer Butterfly Check Valve |
| Main Material | Ductile Iron |
| Size | 2inch to 12inch |
| Pressure | Class150 / PN16 |
| Media | Water, Sewage etc. |
| Working Temperature | -10°C to 80°C (NBR) -10°C to 120°C (EPDM) |
| Surface Finishing | Epoxy Red Or Blue |
| Valve Type | Dual-disc Spring Check Valve |
| Body Style | Wafer |
| Flow Direction | Unidirectional (marked with cast arrow) |
| Disc Configuration | Two spring-loaded semi-circular discs |
| Mounting Orientation | Horizontal / Vertical (upward/downward flow) |
Product Material
Part | Material |
| Body | Ductile Iron QT450-10 |
| Disc | Carbon Steel, Covered by EPDM |
| Shaft/Stem | Stainless Steel 304 |
| Spring | Stainless Steel 304 |
| Seal | NBR |
Key Features
Heavy-duty SS304 torsion springs snap the dual discs shut within 0.2 seconds to eliminate flow reversal and protect upstream pumps.
The streamlined disc profile optimizes flow area, cutting systemic pressure drop by up to 25% versus swing check valves.
EPDM/NBR encapsulated discs deliver repeatable, bubble-tight sealing that meets API 598 Rate A zero-leakage standards for water and sewage.
Critical bearing surfaces and shaft holes are CNC-machined within 0.05mm tolerances to guarantee smooth sync and prevent sticking.
Electrostatic fusion-bonded epoxy coating (≥250 microns, Red/Blue) fully isolates the ductile iron body from aggressive corrosion.
Applications & Media
Municipal Water
Potable water networks, pumping stations, and distribution lines.
Wastewater Treatment
Municipal sewage, treated effluent, and industrial fluid disposal.
Commercial HVAC
Chilled water loops, cooling towers, and condenser water systems.
Fire Protection
Backflow prevention in wet-pipe automatic sprinkler infrastructures.
Compatible Companion Products
Looking for a one-stop container loading solution? We also manufacture matching pipeline components:
Resilient Seated Gate Valves (DIN/BS/AWWA Standards)
Wafer & Lug Butterfly Valves (Lever / Gear Operated)
Y-Strainers (Ductile Iron Body, SS304 Mesh)
Packaging & Logistics
To prevent marine transport rust and handling damage, we strictly implement export-grade protective packaging:
Valve Protection
Flange faces and internal seals are fitted with custom plastic protective covers.
Internal Wrapping
Each valve is sealed in a heavy-duty anti-moisture plastic bag with desiccant.
Outer Crate
Packed exclusively in reinforced, fumigation-free plywood cases suitable for multi-modal forklift handling and maritime stacking.
FAQ
Hot Tags: wafer butterfly check valve, China wafer butterfly check valve manufacturers, suppliers, factory, 100mm Swing Check Valve, 3 Inch Flanged Check Valve, check valve, Grooved Swing Check Valve, Silent Type Check Valve, Wafer Butterfly Check Valve
You Might Also Like
Send Inquiry