Check-, air-, butterfly- and other valves

	S-1400 Air relief valve Triple function [S-1400 Air relief valve]
	S-1410 Esco Triovent Air valve 1 1/2" and 2" Three functions NEWS [S-1410 Air valve 1 1/2" and 2"] - large capacity when filling an empty pipeline - automatic air valve with large capacity - vacuum( large suction capacity)
	S-1410 Esco Triovent Air valve 1 1/2 " and 2 " Four functions NEWS [S-1420 Air valve 1 1/2 " and 2 "] - large capacity when filling an empty pipeline - automatic air valve with large capacity - vacuum (large suction capacity) - backflow prevention - prevents suction of water
	S-2500 Check valve DIN 3202 F6 face-to-face length [S-2500 Check valve]
	S-2555 Check valve DIN 3202 F6 face-to-face length With seat in gunmetal [S-2555 Check valve] VDS approval pls.download document here