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Sort By: Price: Low to High Price: High to Low Most Popular Title Manufacturer Newest Oldest Availability 30 per page 60 per page 120 per page 180 per page 300 per page 1 2 Mueller ProLine In-Line Check Valve, 1/2 in, Solvent, 200 psi, PVC Our Price: $2.49 Mueller ProLine In-Line Check Valve, 3/4 in, Solvent, 200 psi, PVC Our Price: $2.51 Mueller ProLine In-Line Check Valve, 1 in, Solvent, 200 psi, PVC Our Price: $4.51 Mueller Check Valve, In-Line, Series: ProLine, 1/2 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe Mueller Check Valve, In-Line, Series: ProLine, 3/4 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe Mueller Check Valve, In-Line, Series: ProLine, 1 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe American Granby SC125B Check Valve, 1-1/4 x 1-1/4 or 1-1/2 in, MPT x Barb or Slip, Thermoplastic Our Price: $5.69 Mueller ProLine In-Line Check Valve, 1-1/4 in, Solvent, 200 psi, PVC Our Price: $8.16 Flotec Fp0026-6d-p2 Sump Check Valve, 1-1/4 or 1-1/2 in, PVC Our Price: $8.46 Sump Check Valve, Series: SC, 1-1/4 in, MPT X Barb End Connection, Thermoplastic Body, Includes: Stainless Steel Clamp Mueller Check Valve, In-Line, Series: ProLine, 1-1/4 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe Flotec Sump Check Valve, 1-1/4 or 1-1/2 in, PVC Body, 5.1 in Overall Length, 2-1/2 in Overall Width, 2-1/2 in Overall Height, Includes: Complete Installation Instructions NDS flo Control 1011 Reinforced Poppet Check Valve, 1/2 in, Slip, 200 psi, PVC Our Price: $8.58 NDS flo Control 1001 Reinforced Poppet Check Valve, 1/2 in, FIP, 200 psi, PVC Our Price: $8.58 Mueller ProLine In-Line Check Valve, 1-1/2 in, Solvent, 200 psi, PVC Our Price: $9.24 NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 1/2 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 4-1/8 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 1/2 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 4-1/8 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Mueller Check Valve, In-Line, Series: ProLine, 1-1/2 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe Mueller ProLine Swing Check Valve, 1/2 in, IPS, 200 psi, Brass Our Price: $9.31 NDS flo Control 1011 Reinforced Poppet Check Valve, 3/4 in, Slip, 200 psi, PVC Our Price: $9.49 NDS flo Control 1001 Reinforced Poppet Check Valve, 3/4 in, FIP, 200 psi, PVC Our Price: $9.49 Mueller Check Valve, Swing, Series: ProLine, 1/2 in, 200 psi, 350 deg F, IPS End Connection, Water, Oil, Gas, Brass Body, ANSI Specified, NSF 61-G, UPC Certified NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 3/4 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 4-1/8 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 3/4 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 4-1/8 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Mueller ProLine Swing Check Valve, 3/4 in, IPS, 200 psi, Brass Our Price: $12.47 NDS flo Control 1011 Reinforced Poppet Check Valve, 1 in, Slip, 200 psi, PVC Our Price: $12.78 NDS flo Control 1001 Reinforced Poppet Check Valve, 1 in, FIP, 200 psi, PVC Our Price: $12.78 Mueller Check Valve, Swing, Series: ProLine, 3/4 in, 200 psi, 350 deg F, IPS End Connection, Water, Oil, Gas, Brass Body, ANSI Specified, NSF 61-G, UPC Certified NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 1 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 5-1/4 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 1 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 5-1/4 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Mueller ProLine In-Line Check Valve, 2 in, Solvent, 200 psi, PVC Our Price: $13.40 Wayne Pumps 66005-wyn Check Valve, PVC Our Price: $13.60 Flotec Fp0026-10 Check Valve Sump Pump Kit, 1-1/4 or 1-1/2 in, NTP, PVC Our Price: $15.61 Mueller Check Valve, In-Line, Series: ProLine, 2 in, SCH 40 Pressure Class, 200 psi, 73 deg F, Solvent End Connection, PVC Body, Stainless Steel Spring Trim, Neoprene O-Ring Seal Softgoods, White, ASTM D2466, Spring Loaded Poppet, For Both SCH 40 and 80 Pipe Wayne Pumps Check Valve, PVC Body, 2-3/4 in Overall Length, 2-3/4 in Overall Width, 7 in Overall Height, Black, Includes: 1-1/2 in Shoulder End Adapter, For Use With All Types Of Sump Pumps Flotec Check Valve Sump Pump Kit, 1-1/4 or 1-1/2 in, NTP End Connection, PVC Body, 2.2 in Overall Length, 7-1/2 in Overall Width, 2.2 in Overall Height, Includes: Complete Installation Instructions NDS flo Control 1011 Reinforced Poppet Check Valve, 1-1/4 in, Slip, 200 psi, PVC Our Price: $16.71 NDS flo Control 1001 Reinforced Poppet Check Valve, 1-1/4 in, FIP, 200 psi, PVC Our Price: $16.71 Wayne Water Systems 57028-001 Sump Pump Check Valve Kit, 1-1/4 in, NPT, Thermoplastic Our Price: $17.16 NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 1-1/4 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 6-3/16 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 1-1/4 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 6-3/16 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Wayne Water Systems Check Valve Kit, Sump Pump, 1-1/4 in, NPT End Connection, Thermoplastic Body, Includes: Inline Installation Kit Mueller ProLine Swing Check Valve, 1 in, IPS, 200 psi, Brass Our Price: $17.92 NDS flo Control 1011 Reinforced Poppet Check Valve, 1-1/2 in, Slip, 200 psi, PVC Our Price: $18.24 NDS flo Control 1001 Reinforced Poppet Check Valve, 1-1/2 in, FIP, 200 psi, PVC Our Price: $18.24 Mueller Check Valve, Swing, Series: ProLine, 1 in, 200 psi, 350 deg F, IPS End Connection, Water, Oil, Gas, Brass Body, ANSI Specified, NSF 61-G, UPC Certified NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 1-1/2 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 6-3/16 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 1-1/2 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 6-3/16 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Flotec Fp212-257 Sewage Check Valve, Plastic, Stainless Steel Our Price: $23.54 Mueller ProLine Swing Check Valve, 1-1/4 in, IPS, 200 psi, Brass Our Price: $23.91 NDS flo Control 1011 Reinforced Poppet Check Valve, 2 in, Slip, 200 psi, PVC Our Price: $25.64 Flotec Sewage Check Valve, Plastic, Stainless Steel Body, 2 in Overall Length, 2 in Overall Width, 6 in Overall Height Mueller Check Valve, Swing, Series: ProLine, 1-1/4 in, 200 psi, 350 deg F, IPS End Connection, Water, Oil, Gas, Brass Body, ANSI Specified, NSF 61-G, UPC Certified NDS Check Valve, Reinforced Poppet, Series: flo Control 1011, 2 in, 200 psi, 72 deg F, Slip End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 7 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation NDS flo Control 1001 Reinforced Poppet Check Valve, 2 in, FIP, 200 psi, PVC Our Price: $25.64 Mueller ProLine Swing Check Valve, 1-1/2 in, IPS, 200 psi, Brass Our Price: $31.02 Simmons SB Check Valve, 1/2 in, FPT, 400 psi, Silicon Bronze Cast Our Price: $36.18 NDS Check Valve, Reinforced Poppet, Series: flo Control 1001, 2 in, 200 psi, 72 deg F, FIP End Connection, PVC Body, 300 Stainless Steel Spring Trim, EPDM Gasket, Buna-N Seal, EPDM O-Ring Softgoods, 7 in Overall Length, White, NSF/ANSI 61+372, ASTM Certified, For Spas, Swimming Pools, Industrial and Irrigation Mueller Check Valve, Swing, Series: ProLine, 1-1/2 in, 200 psi, 350 deg F, IPS End Connection, Water, Oil, Gas, Brass Body, ANSI Specified, NSF 61-G, UPC Certified Simmons Check Valve, Series: SB, 1/2 in, 400 psi, FPT End Connection, Water, Oil, Gas, Silicon Bronze Cast Body, Stainless Steel Spring, Stainless Steel Washer and Stainless Steel Locknut Trim, Buna-N O-Ring Softgoods, 2-5/8 in Overall Length, 1-7/16 in Overall Width, NSF/ANSI 372, For Well Water Systems       1 2