Campbell Hausfeld MP513901SJ Check Valve Tube Kit

MP513901SJ is a genuine Campbell Hausfeld Check Valve Tube Kit, sold as an original equipment replacement for Campbell Hausfeld VT pump assemblies. This kit is specifically intended to convert older unloading configurations to Campbell Hausfeld's newer unloader system, helping ensure the pump cycles and releases air as designed, with a focus on preserving OEM performance. The package includes installation instructions to guide the upgrade, making it suitable for professional service or DIY refurbishment of VT-series compressors. As an OEM replacement, MP513901SJ provides a conversion path that maintains compatibility with Campbell Hausfeld unloader design and maintenance expectations for VT pumps. Intended for Campbell Hausfeld VT pump models that use the check valve tube configuration, this kit helps technicians and enthusiasts complete the conversion without guessing about part compatibility.