Sealing takes place by means of pressing the valve discs without sliding onto the seat. The fine worked seal precision surface of the valve discs guarantees denseness for the carried flow quantity, also when dirt particles have been deposited on the surfaces of the gate valve discs. Model 1 4112 xx
The long-lasting elastic packing made of special Teflon with outstanding characteristics guarantees certain positive sealing. The spindle stays smooth even if there is a strong compression.