Product Name: Brass Check Valve
Main Material: Brass
Size: 3/4 Inch, DN20
Rated Pressure: 1.6 MPa, PN16, Class 150 LB
End Connection: Threaded
Working Medium: Water, Oil, Non-corrosive and Non-flammable Gases
Applicable Temperature: -10°C to 120°C
Brass Check Valve Features
1. Extended Thread Design
Strong installation fit, prevents leakage
Prevents water pipes from pressing against the flange during installation
2. Thickened Valve Body Flange
High-precision CNC machine processing
One-time molding, even wall thickness, wear-resistant, high strength
3. Standard Diameter, Large Bore, Sufficient Flow
Complies with national ISO228 standard diameter
Large water flow, faster water use
4. High-temperature Heat Treatment
Two rounds of heat treatment, removes processing stress
Makes the product more stable, pressure-resistant, and explosion-proof


Source: https://www.magpievalves.com/brass-check-valve-3-4-inch-150-lb-dn20-threaded-ends.html