DN10 3/8" BSP Female to Male Nickel Plated Brass Check Valve One Way Non-Return Water Gas Oil Hex Rud Min 2 Bar Pneumatic DN10 3/8" BSP Female to Male Nickel Plated Brass Check Valve One Way Non-Return Water Gas Oil Hex Rud Min 2 Bar Pneumatic. Sale price : $1.37 Category : Home Improvement