Vacuum Regulator Diaphragm Corr. Westfalia 1″ Two Holes The Vacuum Regulator Diaphragm Corr. Westfalia 1″ Two Holes is a replacement diaphragm designed to correspond with compatible Westfalia 1″ vacuum regulators used within dairy milking vacuum systems. The diaphragm forms an important part of the regulator mechanism and helps the unit respond correctly to changes in vacuum demand during milking. The Vacuum Regulator Diaphragm Corr. Westfalia 1″ Two Holes features a two-hole design and is suitable for replacing an existing diaphragm that has become worn split stretched hardened or damaged through regular use. A deteriorated diaphragm can affect the movement of the regulator mechanism which may lead to unstable vacuum levels poor regulation or inconsistent system response . This replacement diaphragm is particularly useful during vacuum regulator servicing repairs and rebuilding . When replacing the diaphragm it is also worth checking the condition of the regulator spring valve seals and associated internal components for signs of wear or contamination. Before ordering compare the existing diaphragm carefully and confirm the 1″ Westfalia regulator type two-hole arrangement and over