摘要:
A valve selectively opens and closes a passageway defined by a port. The valve comprises a body defining outer and inner surfaces; the inner surface defining an inner cavity. A sealing arm extends from the body into the inner cavity and is movable between first and second positions for closing and opening the passageway, respectively. A shape memory alloy member is disposed at least partially along the outer surface and alternates between first and second lengths in de-energized and energized states, respectively. The first length is greater than the second length, which constricts about the body. A leg extends from the body into the inner cavity and is moveable between initial and activated positions in the de-energized and energized states, respectively. The leg engages and moves the sealing arm from the first position to the second position when the leg moves from the initial position to the activated position.
摘要:
Various embodiments of an antimicrobial insert for a stopcock medical connector are provided. More specifically, the present invention relates to an antimicrobial insert that is seated within at least a portion of the annular bore of the connector's tap, wherein fluid within the annular bore contacts the antimicrobial insert, thereby preventing microbial proliferation within the stopcock medical connector.
摘要:
Fluid valve apparatus having enclosed seals are disclosed. An example fluid valve includes a movable flow control member positioned between an inlet and an outlet of a fluid flow passageway of the fluid valve. A retainer is removably coupled to the flow control member such that the retainer and the flow control member define a sealing cavity when the retainer is coupled to the flow control member. A seal is positioned within the sealing cavity to define a sealing surface of the flow control member. The seal has an inner core composed of a first material, where the core is substantially encased with a sheath composed of a second material different than the first material. The retainer clamps the seal to the flow control member.
摘要:
A valve for shutting off and/or controlling the throughflow of fluid flows is provided. A valve housing, having a valve seat contact surface, a valve cover with a valve cover thickness which is provided with a material allowance, and the valve body form together a first, maximum lift; and when the worn region of the valve seat contact surface is removed, the valve cover thickness can be removed such that the first, maximum lift remains the same or remains the same with only minor deviations; and/or the valve housing, valve seat contact surface, valve cover with the valve cover thickness, and the valve body is provided with a material allowance form a first, particularly maximum lift; and when the worn region of the valve seat contact surface is removed, the valve body can be removed such that the first, maximum lift remains the same or with only minor deviations.
摘要:
A high cycle and speed valve (10) includes a body (12), a valve seat (20) fixed within the body, and a diaphragm (24) that moves between a closed position in which the diaphragm is forced against the valve seat, and an open position in which the diaphragm is released from the valve seat. The valve seat includes a static section (40) that is secured within the body, and a dynamic section (42) that is compressed by the diaphragm when the diaphragm is in the closed position. The static section includes a radially extending flange (44) that is received in a recess (46) formed in the body to secure the static section in the body. The valve includes a body cavity relief space (52) into which the dynamic section compresses in the closed position. The valve further includes a cap (26) that has a dry film lubricant layer (58) that serves as a dry lubricant between the cap and the diaphragm.
摘要:
The valve seat includes an iron-based sintered alloy subjected to oxidation treatment, which is obtained by subjecting an iron-based sintered alloy including: 4 mass % to 15 mass % of Co particles; and hard particles each containing at least one compound of an intermetallic compound, a carbide, a silicide, a nitride, or a boride that has one or more kinds of elements selected from group 4a to 6a elements in a periodic table, and having a hardness of from 600 HV to 1,600 HV to oxidation treatment, and which has an oxide mainly including triiron tetraoxide (Fe3O4) and cobalt oxide (CoO) formed on a surface and in an interior of the iron-based sintered alloy. The iron-based sintered alloy subjected to oxidation treatment has an area ratio of the oxide of from 5% to 25% in a cross section thereof in a state prior to installation on the cylinder head.
摘要翻译:阀座包括通过对包含4质量%至15质量%的Co颗粒的铁基烧结合金进行氧化处理的铁基烧结合金; 和含有至少一种金属间化合物,碳化物,硅化物,氮化物或硼化物的化合物的硬质颗粒,其具有选自元素周期表中的4a〜6a族元素中的一种或多种元素,并且具有硬度 的600HV至1600V的氧化处理,并且其具有主要包含在铁基烧结合金的表面和内部形成的四氧化三铁(Fe 3 O 4)和氧化钴(CoO)的氧化物。 经过氧化处理的铁基烧结合金在安装在气缸盖上之前的状态下,其截面的氧化物面积比为5%〜25%。
摘要:
Provided is a nozzle incorporating a valve, which easily improves durability. The nozzle for spraying water to a targeted object, including a nozzle body provided with a passage of water and a valve arranged inside the passage of the nozzle body, wherein at least a part of an inner surface of the passage including a portion to have contact with the valve is coated by diamond-like carbon.
摘要:
A check valve comprises a valve seat element along a fluid path that is formed of a polymeric material and comprises a hole that extends from an input end of the valve seat element to an output end of the valve seat element. The valve seat element includes an inner taper that transitions the input end to the output end, the valve seat element including a sealing surface along the inner taper. A poppet body is formed of a polymeric material and configured to engage the internal tapered sealing surface of the valve seat element. The poppet body moves between a first position at which the poppet body sealingly engages the tapered sealing surface of the valve seat element and a second position at which the poppet body is separate from the inner taper of the valve seat member.
摘要:
A gas exchange valve of an internal combustion engine may include a valve plate and a valve stem. A nickel-phosphorus layer may be disposed on at least the valve stem. The nickel-phosphorus layer may have a phosphorus content that is greater than 10 percent by volume. A method and apparatus for coating a gas exhaust valve are also disclosed.
摘要:
An iron-based alloy includes (in weight percent) carbon from about 1 to about 2 percent; manganese up to about 1 percent; silicon up to about 1 percent; nickel up to about 4 percent; chromium from about 10 to about 25 percent; molybdenum from about 5 to about 20 percent; tungsten up to about 4 percent; cobalt from about 17 to about 23 percent; vanadium up to about 1.5 percent; boron up to about 0.2 percent; sulfur up to about 0.03 percent; nitrogen up to about 0.4 percent; phosphorus up to about 0.06 percent; niobium up to about 4 percent; iron from about 35 to about 55 percent; and incidental impurities. The chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5. The alloy is suitable for use in elevated temperature applications, such as valve seat inserts for combustion engines.