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    VP33 Series 1-Piece Check Valves
    Check Valves
        
    
    
            
                
                    
                        
                
            
                
    
            Features
        
- Fixed and adjustable cracking pressure.
 - Reliable DK-LOK Tube Fitting, NPT and ISO pipe end connections.
 - Stainless and Brass material construction.
 
                            Item # | 
                        
                            Series | 
                        
                            End Connection | 
                        
                            Size Inlet x Outlet | 
                        
                            Spring Nominal Cracking Pressure | 
                        
                            CAD | 
                                                        
|---|---|---|---|---|---|
| VP33A-F4N-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Female NPT | Size Inlet x Outlet N/A 1/4" Female NPT x 1/4" Female NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33A-F4R-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Female ISO Tapered | Size Inlet x Outlet N/A 1/4" Female ISO Tapered x 1/4" Female ISO Tapered | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33A-M4N-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Male NPT | Size Inlet x Outlet N/A 1/4" Male NPT x 1/4" Male NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33A-M4R-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Male ISO Tapered | Size Inlet x Outlet N/A 1/4" Male ISO Tapered x 1/4" Male ISO Tapered | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33A-MF4N-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Male NPT, Female NPT | Size Inlet x Outlet N/A 1/4" Male NPT x 1/4" Female NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33A-FM4N-1/3-S | Series N/A Cv Reduction - 0.35 | End Connection N/A Female NPT, Male NPT | Size Inlet x Outlet N/A 1/4" Female NPT x 1/4" Male NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33B-F8N-1/3-S | Series N/A Cv Reduction - 1.20 | End Connection N/A Female NPT | Size Inlet x Outlet N/A 1/2" Female NPT x 1/2" Female NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33B-M8N-1/3-S | Series N/A Cv Reduction - 1.20 | End Connection N/A Male NPT | Size Inlet x Outlet N/A 1/2" Male NPT x 1/2" Male NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| VP33B-MF8N-1/3-S | Series N/A Cv Reduction - 1.20 | End Connection N/A Male NPT, Female NPT | Size Inlet x Outlet N/A 1/2" Male NPT x 1/2" Female NPT | Spring Nominal Cracking Pressure N/A 1/3 psi (0.02 bar) | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
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