摘要:
In order to maintain airtightness by a ferrule even by use of a general-purpose tool and to be capable of releasing airtightness by the ferrule if necessary, a pipe joint (Ja) includes a ferrule (33) receiving an axial pressing force from a fixing member (66a) screwed in a clamping direction thereby to airtightly seal a gap between an inner periphery of the joint body (16) and an outer periphery of a pipe (P) when the fixing member (66a) is rotated in a clamping direction to be screwed in, a loosening male thread (68) formed on an outer periphery of the fixing member (66a) and threaded in a direction opposed to a direction in which the joint body (16) and the fixing member (66a) are threaded, a loosening tool (130) screwable into the loosening male thread (68), and a pressure receiving portion (39) abutting against the loosening tool (130) thereby to prevent further screw-in when the loosening tool (130) is screwed into the loosening male thread (68) and rotated in the direction opposed to the clamping direction of the fixing member (66a).
摘要:
In order to improve the reliability of sealing performance, a pipe joint (Ja) includes a cylindrical clamping member (32) screwed into a joint body (16), a ferrule (33) receiving an axial pressing force from the clamping member (32) screwed in a clamping direction, thereby airtightly sealing a gap between an inner periphery of the joint body (16) and an outer periphery of a pipe (P), a cylindrical fixing member (66a) constructing the clamping member (32) and abutting against the ferrule (33) to apply a pressing force to the ferrule (33), a clamping nut (36) constructing the clamping member (32) and having an outer periphery formed with a non-circular fitting portion (48) and receiving a screw-in force in the clamping direction, thereby imparting to the fixing member (66a) a pressing force to the ferrule (33) side, and a locking unit (41) preventing the fixing member (66a) from displacement in a direction such that the ferrule (33) is released from the pressing force applied by the fixing member (66a).
摘要:
Disclosed is a closing valve A which is provided with a joint function unit (20) reducing a diameter of a clamp ring (40) to connect a pipe (P) and which airtightly locks the joint function unit (20) without reduction in the sealing performance. The joint function unit (20) includes a cylindrical joint body (21) constituting one end of a flow path (13) in a housing (10), a cylindrical clamping member (32) which is threadingly engaged with the joint body (21), the metal clamp ring (40) surrounding the pipe (P) inserted in the joint body (21), a diameter reduction unit (54). The closing valve A is provided with a sealing member (60, 70, 80, 90) which is detachably attachable to the joint function unit (20) and is capable of limiting flow of refrigerant in the joint function unit (20) in non-contact with a seal area (first and second biting portions 49 and 50) of the clamp ring (40) in cooperation with the pipe (P).
摘要:
A valve device which is lightweight and manufactured at low cost, limits to the minimum an influence of strain or distortion of a valve body caused from connection of external piping and the supporting of the valve to the outdoor unit frame or the like, and lowers reduces leakage of refrigerant as much as possible. The valve body 3 is provided at its one side in the axial direction of the cylindrical shape with an operation tool receiving part, at the side of a valve lid 6, for receiving the operation tool which turns a valve spindle, the valve body further provided at the other side in the axial direction with a connection tool mounting part for mounting a connection tool 8 by which an external piping is attached and detached, and, the valve body 3 moreover provided at the middle in the axial direction with a non-round trunk part 33 having a non-round cross section and a recessed part 34 concaved from the outside surface of the trunk part 33. A support member 4 consists of a trunk part engaging section 43, which engages with the non-round trunk part 33 to restrict or prevent the valve body 3 from turning and shifting in position, and a recessed part engaging section 44 which engages with the recessed part 34 to restrict or prevent the valve body 3 from axially shifting in position.