AAP Brass Y-Type Check Valve, 4"

This AAP brass Y-type spring check valve has a brass CW617N body, a stainless steel spring and an NBR seat. It is supplied in 9 sizes from 1/2" (15mm) to 4" (100mm).

A spring check valve closes with a spring rather than relying on gravity, so it does not need to be mounted upright. This valve can be fitted in a horizontal, vertical or oblique position. Flow opens the disc against the spring, and the spring closes it as flow stops or reverses. Like any check valve it stops reverse flow but it is not a tight shut-off valve, so fit a separate isolating valve where you need to isolate the line. The pressure is 1,172 kPa (11.72 bar) up to 1", 965 kPa (9.65 bar) from 1-1/4" to 2" and 758 kPa (7.58 bar) from 2-1/2" to 4". It looks like the working pressure and falls as the size goes up, so it is shown here as the pressure for each size.

Where this product is used

• Hot and cold water lines
• Compressed air lines
• Oil lines
• Non-return on small bore plant and workshop services

Features

• 9 sizes from 1/2" (15mm) to 4" (100mm)
• Brass CW617N body with a stainless steel spring
• NBR 60 SH/A seat
• Fits in a horizontal, vertical or oblique position
• Pressure by size, up to 1,172 kPa (11.72 bar)
• Working temperatures: air -20 to 110°C, water 0 to 90°C, gas -20 to 60°C

Key specifications

Choosing the right option

Choose the size.

Related AAP products: AAP Brass Check Valve, E-Type, Spring Loaded, AAP Brass Swing Check Valve, Screwed, AAP Stainless Steel Swing Check Valve, Screwed, AAP Stainless Steel 3 Piece Spring Check Valve, Screwed.