摘要:
A valve assembly includes a valve body defining a fluid inlet in fluid communication with a fluid outlet. The valve body has an inner body surface defining an interior chamber extending between the fluid inlet and the fluid outlet. A valve element is disposed within the interior chamber and rotatable through a range of positions relative to the outlet providing a high level of precision control of a fluid flow rate through the valve assembly. A valve seat with a seal is positioned around a valve element. The valve seat is configured to self-adjust its inner radial diameter to correspond to the outer radial diameter of the valve element to maintain a portion of an inner seat surface in contact with an outer valve surface of the valve element through the range of positions.
摘要:
A butterfly valve includes a body (102) defining a passageway (112) between an inlet (114) and an outlet (116). The butterfly valve includes a first flexible seal (106) coupled to a first surface of the body (102) adjacent the inlet (114) to engage a first portion of a disk (104). The example butterfly valve also includes a second flexible seal (108) coupled to a second surface of the body (102) adjacent to the outlet (116) to engage a second portion of the disk (104) different than the first portion.
摘要:
A handle assembly (104', 104", 104"') for positioning a valve includes a handle body (126', 126", 752, 752') and an insert (402, 726, 726', 726"). The insert (402, 726, 726', 726") is arranged so as to provide an interface between the handle body (126', 126", 752, 752') and a stem (116) of the valve. The insert (402, 726, 726', 726") includes protrusions (750, 750', 750") extending therefrom configured to distribute stress resulting from a moment load applied to the handle assembly (104', 104", 104"') through the handle body (126', 126", 752, 752') to reduce failure of the handle body (126', 126", 752, 752').
摘要:
The invention relates to a flap valve comprising a seal (34) that has an annular seal body made of an elastomeric material and comprising an annular groove (26) for receiving the seal (34). The seal body has a radially inner wall section (36) relative to a longitudinal axis (16) of the seal body, said inner wall section having a seal surface (46), and a radially outer wall section (38) that has a greater longitudinal extension in the direction of the longitudinal axis (16) than the radially inner wall section (36), said radially outer wall section (38) forming a step (40) with the radially inner wall section (36). The radially outer wall section (38) is received in a radially outer groove section (28) of the groove (26) in a formfitting manner such that the longitudinal ends (42, 44) of the radially outer wall section (38) are held in the radially outer groove section (28). The radially outer wall section (38) has a reinforcement (50) made of a material that is more rigid than the elastomeric material, said reinforcement (50) axially supporting the radially outer wall section (38).
摘要:
The invention concerns an elastomer liner in the shape of a ring provided with two diametrically opposite openings and several circumferential ribs (8) on its outer surface. Each rib comprises a snap-on catch (7).
摘要:
Vanne papillon à manchette élastique d'étanchéité (5), comportant un corps de vanne (1) et un obturateur papillon (2) comprenant un axe de rotation (3), ladite manchette élastique garnissant la surface interne du corps de vanne et comportant, à chaque extrémité, contre chaque face d'extrémité (8, 9) du corps de vanne, une collerette d'extrémité (7), et, dans la partie médiane de la manchette une surépaisseur longitudinale externe constituant un talon d'ancrage (10) logé dans une gorge (11) du corps de vanne (1), ledit talon (10) formant, à chacun des deux passages diamétraux de l'axe de rotation (3) de l'obturateur papillon (2), un épanouissement circulaire (12) logé dans un lamage circulaire (13) du corps de vanne, ladite manchette constituant une unique garniture, en une seule partie, dudit corps de vanne, caractérisée en ce que ladite manchette (5) comporte au moins dans l'une des deux zones constituées d'une part par ledit talon (10), et d'autre part par chaque épanouissement circulaire (12), au moins une portion évidée (15, 18) permettant un déplacement de la matière de la manchette vers cette portion évidée.
摘要:
Eine Dichtung für das geteilte Gehäuse (5) eines Klappenventils besteht aus in achsparallelen Nuten (21) der einander gegenüberliegenden Berührungsflächen der Gehäusehälften (17, 18) angeordneten stabförmigen Dichtelementen (20) aus verformbaren Material.
摘要:
A butterfly valve assembly including first (12) and second (14) body sections defining an annular radially inwardly projecting rib (R), the body sections being secured together to form a tubular valve body, a valve seat (52) positioned in the valve body and including an annular metallic reinforcing member forming (56,58,60) an annular radially outwardly opening channel which engages the rib in the body, the valve seat further including a sealing ring (72,74,76) of resilient material bonded to the metallic reinforcing member, the average radial thickness of the resilient material being at least three times greaterthan the radial thickness of the reinforcing member, and a valve disk rotatably mounted within the valve seat.