Minimum Pressure Valve Kit for FIAC NK40-NK60 Rotary Compressors (PN 1127190631 EX 7196310000)

Product Description

The Minimum Pressure Valve (MPV) service kit for FIAC NK40 and NK60 rotary screw compressors is a critical component designed to maintain system reliability and efficiency.

The primary function of the MPV is to maintain a minimum required pressure inside the oil separator vessel during startup and unloaded running. This minimum pressure is vital for ensuring proper oil lubrication and efficient oil-air separation before air enters the distribution network. Additionally, it acts as a non-return (check) valve, preventing backflow of compressed air from the air receiver/pipework back into the compressor during idle mode or shutdown.

- Technical & Installation Tips:

- Maintenance Intervals:** Rebuilding or replacing the internal valve components is recommended during routine maintenance intervals (typically every 2,000–4,000 operating hours or as specified in the FIAC service manual).
- Safety First:** Ensure the compressor is completely powered off, electrically isolated, and that all residual pressure in the separator tank has been completely vented before starting work.
- Cleaning the Valve Housing:** Clean the inner valve housing thoroughly to remove varnish, oil residue, or dirt using a mild, non-aggressive degreasing agent.
- O-Ring Lubrication:** Apply a thin layer of silicone grease or clean compressor oil to the new seals and O-rings prior to assembly to prevent pinch damage.
- Spring & Torque Check:** Ensure proper seating of the internal spring and tighten all cover bolts evenly in a cross pattern to ensure a uniform seal.

- Technical Specifications

- Specification,Value
- Weight,64 g
- Width,80 mm
- Height,50 mm
- Length,130 mm
- Country of origin,DE

All product specifications in this catalog are based on information taken from official sources, including the official manufacturer’s FIAC websites, which we consider as reliable. Unfortunately, even the official documents may contain mistakes and printing errors – we are not able to confirm that all of these data are precise and represent the facts. Most of the manufacturers reserve the right to change the product characteristics or complement without notice. We strongly recommend using the published information as a basic information subject to FIAC brand review. Please refine the important parameters by the selling assistant when making a purchase. All content included in this catalog is the intellectual property of www.bricoutensili.com. Any publication or copying (full or partial) without a reference to the source page is prohibited.