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Check Valves

Protect your systems from reverse flow with our durable check valves. Designed to allow flow in one direction while preventing backflow, these valves safeguard pumps, compressors, and pipelines from damage while maintaining system efficiency. Our selection includes swing check valves, ball check valves, spring-loaded inline check valves, and dual-plate designs, available in a variety of sizes, materials, and pressure ratings. Perfect for water treatment, HVAC, chemical processing, oil and gas, and general industrial applications, check valves deliver dependable performance across a wide range of systems. With rugged construction, easy installation, and trusted-brand reliability, our check valves provide long service life, leak-free performance, and peace of mind in critical flow applications.

: Apollo Valves (399)
ASCO (9)
Sharpe Valves (144)
Spirax Sarco (50)
Stauff USA (7)

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Apollo Brass Mini Check Valve with Standard Configuration 1" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1" (2 x FNPT)

MPN:6170501

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Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

MPN:6170302

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Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

MPN:6170301

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Apollo Brass Mini Check Valve with Standard Configuration 1/4" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/4" (2 x FNPT)

MPN:6170101

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Apollo Brass Mini Check Valve with Standard Configuration 3/4" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 3/4" (2 x FNPT)

MPN:6170401

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Apollo Brass Mini Check Valve with Standard Configuration 3/8" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 3/8" (2 x FNPT)

MPN:6170201

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Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1-1/2" (2 x FNPT)

Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1-1/2" (2 x FNPT)

MPN:7010727BC

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Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1/2" (2 x FNPT)

Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1/2" (2 x FNPT)

MPN:7010327BC

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1" (2 x FNPT)

MPN:61105A1

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/2" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/2" (2 x FNPT)

MPN:61107A1

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/4" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/4" (2 x FNPT)

MPN:61106A1

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1/2" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1/2" (2 x FNPT)

MPN:61103A1

Price Not Available

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Apollo Brass Mini Check Valve with Standard Configuration 1" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1" (2 x FNPT)

MPN:6170501

Price Not Available

QTY:

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Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

MPN:6170302

Price Not Available

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Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/2" (2 x FNPT)

MPN:6170301

Price Not Available

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Apollo Brass Mini Check Valve with Standard Configuration 1/4" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 1/4" (2 x FNPT)

MPN:6170101

Price Not Available

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Apollo Brass Mini Check Valve with Standard Configuration 3/4" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 3/4" (2 x FNPT)

MPN:6170401

Price Not Available

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Apollo Brass Mini Check Valve with Standard Configuration 3/8" (2 x FNPT)

Apollo Brass Mini Check Valve with Standard Configuration 3/8" (2 x FNPT)

MPN:6170201

Price Not Available

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Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1-1/2" (2 x FNPT)

Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1-1/2" (2 x FNPT)

MPN:7010727BC

Price Not Available

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Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1/2" (2 x FNPT)

Apollo Bronze 2 Piece Ball Valve with SS Latch-Lock Lever & Nut, Integral Check Cartridge 1/2" (2 x FNPT)

MPN:7010327BC

Price Not Available

QTY:

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1" (2 x FNPT)

MPN:61105A1

Price Not Available

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/2" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/2" (2 x FNPT)

MPN:61107A1

Price Not Available

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/4" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1-1/4" (2 x FNPT)

MPN:61106A1

Price Not Available

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Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1/2" (2 x FNPT)

Apollo Bronze Ball-Cone In-Line Check Valve less Spring 1/2" (2 x FNPT)

MPN:61103A1

Price Not Available

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About NISCO Inc.

NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.

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