Collection: Threaded Fasteners

F6 Style 2-1/2" Flange Insert Check Valve, 1.50 psi Cracking Pressure

Check-All F6 Flange Insert Check Valve - 2-1/2" Nominal Pipe Size, 0.125 psi Cracking Pressure

3/4 in FP Style Flange Insert Check Valve

Check-All® F1 Style Flange Insert Check Valve - 2-1/2in NPS, 0.500 psi Cracking Pressure

F6 Style Flange Insert Check Valve - 3/4'' NPS, 1.50 psi

Check-All F1 Style Flange Insert Check Valve, 1/2 in, 0.500 psi Cracking Pressure

20" F1 Style Flange Insert Check Valve with 0.500 psi Cracking Pressure

Check-All® FP Style 3/4" Flange Insert Check Valve with 1.50 psi Cracking Pressure

2 Inch FP Style Flange Insert Check Valve - 1.50 psi Standard Cracking Pressure

Check-All® F1 1-1/2" Flange Insert Check Valve - 1.50 psi Standard Cracking Pressure

6 Inch FP Style Flange Insert Check Valve - Stainless Steel Spring, Class 150/300

4" FP Style Flange Insert Check Valve - 0.125 psi Cracking Pressure

Check-All® 1-1/4" FP Style Flange Insert Check Valve

2" F1 Style Flange Insert Check Valve with 0.125 psi Cracking Pressure

2" FP Style Flange Insert Check Valve with 0.125 psi Cracking Pressure

Check-All® F1 Flange Insert Check Valve - 3" Nominal, 1.50 psi Cracking Pressure