The non-return valve type 3015 is available in four versions:
1) non-return valve type 3015 for hydraulic transmitters.
2) non-return valve type 3015SP for transmitters used on systems which require “depressurization”.
3) non-return valve type 3015L for in line installation.
4) non-return valve type 3015C for column installation Cetop 3 on electrohydraulic cylinders.