Ball check valve 702
Technical Specifications
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Nominal diameter
— DN 40-600
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Nominal pressure
— PN 10, PN16
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Medium temperature
— -60 °C ... +120 °C
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Types of Valve End Connections
— Flanged, welded
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Leakage Class
— «А»
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Warranty Period
— 12 months
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Mounting Position
— Horizontally, vertically
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Types of Control
— Automatic (ball)
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Average Service Life
— 10 000 cycles
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Guaranteed Service Life
— Not less than 5000 cycles
Technical Drawings and Dimensions
The ball check valve model 702 is designed to ensure unidirectional flow in installations where the following are important:
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High resistance to contamination and solid particles
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Maintenance-free operation and reliable performance
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Long service life even under harsh process conditions
The valve’s design allows for automatic shutoff of the flow using a freely moving ball that shifts due to pressure differences. The absence of complex mechanisms makes this valve extremely durable and easy to operate, even in aggressive or particle-laden environments.
Design features of the model:
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Intended for industrial installations with water, wastewater, contaminated or chemically aggressive liquids
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No spring – the ball operates based on pressure differential
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Self-cleaning ball available (in versions with appropriate surface finish)
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Low pressure drop thanks to simple flow geometry
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Easy maintenance – access to internal components without removing the valve from the pipeline (in flanged and bolted versions)
Working media:
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Water, wastewater, liquids with suspended solids
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Petroleum products, oils, gasoline
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Acids and alkalis (depending on material version)
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Chemically aggressive media (including those with phosphates, sulfur)
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Liquids containing solids: sand, coal, sludge
Body / ball materials:
🔹 Carbon steels:
ASTM A216 WCB (1.0619)
🔹 Low-alloy steels:
ASTM A352 LCB / LC1 (~P355NL1 / 1.0566)
🔹 Stainless / corrosion-resistant steels:
ASTM A351 CF8 / AISI 304 (1.4308 / 1.4301)
ASTM A351 CF8M / AISI 316 (1.4408 / 1.4401)
ASTM A351 CF3 / AISI 304L (1.4306 / 1.4306)
ASTM A351 CF3M / AISI 316L (1.4409 / 1.4404)
AISI 904L (1.4539)
