Usually the gauge hatches are made of sparkless cast Aluminium, metal-to-metal sealing. On request they can be supplied with other materials (cast iron or Stainless Steel) and with O-Rings to minimize leakages
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.