DERVAL S.R.L.

Brass or cast iron body Cast-iron operating square (30 x 30 mm) Nickel-coated brass ball

The GEMÜ R677 2/2-way diaphragm valve has a low maintenance plastic bonnet and is manually operated. An integral optical position indicator is standard. The High-Flow valve body provides compact dimensions at high flow rates. -Same mounting height planes over multiple nominal sizes -Compact plant design due to flow optimised valve bodies -Integral optical position indicator

The GEMÜ 507 2/2-way angle seat globe valve has an ergonomically designed plastic handwheel and is manually operated. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. A wiper ring fitted in front of the gland packing protects the seal against contamination and damage. A stainless steel bellows and a handwheel extension are available as options (not for operator size 0). —Various valve body connections (threaded sockets, threaded spigots, butt weld spigots) available —High flow rates due to angle seat design —Optionally for contact with foodstuffs as per directive (EC) No. 1935/20041 (K-no. 1935)

The GEMÜ 728 2/2-way metal ball valve is motorized. It has a plastic actuator housing. A manual override and an optical position indicator are integrated as standard. The seat is made of PTFE. — High flow rates — Full-flow bore