Patent ID: 6942194
Filing Date: 2005-09-13
Classification: F16K,Y10T

Abstract:
1. A gate valve having a housing comprising a bottom part and a top part separated by a flange connection; a first side part comprising a housing inlet and a second side part comprising a housing outlet; clamping connections between said first side part and the bottom and top parts and between said second part and the bottom and top parts, respectively; and a sealing insert clamped between said bottom part, said top part and the said first and second parts; and a sliding member adapted for sliding movement in said housing between a first position in which it establishes a gate barrier between said inlet and said outlet and a second position in which said gate barrier is removed, said sealing insert having an opening opposing said inlet and said outlet, and further having a contact area adapted for sealing contact with said sliding member during said member's sliding movement between said positions, said sealing contact establishing said barrier when said sliding member is in said first position, said gate valve being characterized in that: the sealing insert comprises a rigid body permanently connected to areas having less rigidity than said rigid body, said areas with less rigidity including said contact area and clamped areas in said flange connection and areas clamped between said first side part and the bottom and top parts and between said second side part and the bottom and top parts.