Specification
| Valve material | carbon steel, stainless steel, alloy steel, etc | 
| Valve size | 2 “~48” (DN 50~DN 1200) | 
| Pressure range | Class150~2500 (PN 16 to PN 420) | 
| Applicable temperature | -29°C~ + 560°C | 
| Link mode | pair of clip type, flange type, lug type | 
| Design criteria | API 594, ASME B16.34, API 6D | 
| Test criteria | API 598, EN12266-1, and ISO 5208 | 
| Face to face criteria | API 594, API 6D, E N 558-1 | 
Product Overview
The double plate check valve has a two spring loaded plate design to open to release medium and bounce back to prevent external leakage. This effective check valve can be installed from any location, providing a tight seal and guaranteed no pressure loss.
Two valve plates are fixed to the valve body along a pivot axis, and two springs are installed on the butterfly plate above the sealing surface
Under the push of the medium flow pressure, the spring is pressed, forcing the butterfly plate to open. When the medium is reversed, the spring forces the valve to close
Such valves can be assembled in horizontal and vertical lines. The sealing surface of the disc and seat is made of alloy steel or hard alloy. With high temperature resistance, corrosion resistance, wear resistance, long service life characteristics.
The valve adopts the overall structure, simple and compact, small impact force when closing, small water hammer pressure, high reliability.
The valve body adopts no stop ring and no dew point structure, and the shell sealing performance is more reliable.
RELATED
- 
    
        
        High Temperature/Pressure 304 Stainless Steel Resistant Manual Power Forged Three Piece Flanged Floating Ball Valve
TIANYU 304 Stainless Steel Flanged Floating Ball Valve: Corrosion-Resistant Full-Port Flow Control Solution for Industrial, Sanitary, and Municipal Me…
BALL VALVE 11/03/2025 - 
    
        
        API ANSI 2in-16in DN50-DN400 PN10 PN16 CF8M Pneumatic Flanged Floating Ball Valve
TIANYU CF8M Pneumatic Flanged Floating Ball Valve: 2in-16in (DN50-DN400) PN10-PN16 API/ANSI Class Corrosion-Resistant Flow Control Solution for Indust…
BALL VALVE 11/01/2025 - 
    
        
        Large-Diameter DN1400 CLASS150 WCB SS Triple Eccentric Metal-Sealed Hard Seal Butterfly Valve
TIANYU DN1400 (56″) CLASS 150 WCB Hard Seal Butterfly Valve: Triple Eccentric Metal-Sealed Flanged Valve for Large-Diameter Industrial Media wit…
BUTTERFLY VALVE 10/30/2025 - 
    
        
        PN16 Stainless Steel Floating Ball Valve: Full Port 2PC Flange-Connected Valve with Fire-Safe & Anti-Static SS Ball Valve
TIANYU Stainless Steel Floating Ball Valve: Full Port 2PC Flange-Connected Valve with Fire-Safe & Anti-Static Design for Oil, Gas, and Industrial …
BALL VALVE 10/29/2025 - 
    
        
        High-Performance DN80 Class 150 WCB Soft-Sealed Lug-Type Double Eccentric Butterfly Valve
TIANYU 3” Class 150 WCB lug-type double eccentric butterfly valve is a technologically advanced flow control device engineered to address the challeng…
BUTTERFLY VALVE 10/25/2025 - 
    
        
        DN125 PN16 CF8M Stainless Steel Lug-Type Butterfly Valve with PTFE Lining Concentric Line Butterfly Valves
TIANYU DN125 PN16 CF8M stainless steel lug-type butterfly valve is a precision-engineered flow control device designed to address the challenges of ha…
BUTTERFLY VALVE 10/25/2025 

            
    



