Our Sandwich check valves for fastening between flanges are available in optimized design.
Caused by the new constructed fixture from the flap they are in higher performance and provide a better function.

Characteristics:
• small total length
• low weight
• tight closing at low difference pressure
• after utilization the elasticity of O-ring remains tightness metal/metal
• standard equipment with adjustment for flap
• eye bolt
• for fastening between flanges acc. to DIN
• universal application for gaseous or liquid mediums, in oil-, air-, gas-
   and water systems also used in the chemical industry
• available in the material bronze, steel and AlBz with flap material
   alumium bronze (CuAl), steel and stainless steel
• available with and without spring

Technical data:
• Nominal diameter:  DN   40 up to DN 500
• Working pressure:  DN   40 up to DN 200   PN16
                                  DN 250 up to DN 300   PN10 / 16
                                  DN 350 up to DN 500   PN10
• Betriebstemperaturen: NBR:   -40°C up to +100°C
                                        FKM:   -30°C up to +200°C
                                        PTFE:  -50°C up to +260°C

Special designs:
• metal/metal sealing
• for fasteing between flanges acc. to ANSI, JIS