150
PSI类型C对夹式蝶阀PVC
DN50至DN250公称通径
150 PSI Model “C” Wafer Style Butterfly Valves
PVC
2" through 10" Nominal Sizes |
范围
Scope
这个规定制定了对于用于工业、商业和民用压力管道系统，非腐蚀性或轻度腐蚀性应用，工作温度不超过60oC得PVC管道系统的PVC蝶阀的生产制造的要求。
This specification establishes the manufacturing
requirements for PVC Butterfly Valves intended for use in industrial,
commercial, and residential pressure-piping systems for non-corrosive
or mildly corrosive applications, where the service temperature does not
exceed 140oF.
材料
Materials
阀体应该由符合在ASTM D 1784标准里规定的单元类别12454聚氯乙烯PVC化合物制造。
The body shall be manufactured from a PVC compound
that meets the requirements of Cell Class 12454 polyvinyl chloride as
outlined in ASTM D 1784.
阀瓣应该由符合ASTM A 395规定的三元乙丙橡胶密封的球墨铸铁制造。
The disc shall be manufactured of ductile iron
as specified in ASTM A 395 with EPDM encapsulation.
上部和下部阀杆应该是由ASTM A 582标准规定的416不锈钢制造。
The upper and lower shaft shall be manufactured
from 416 stainless steel as specified in ASTM A 582.
O形环密封材料应该由三元乙丙橡胶制造。
The O-ring seal material shall be manufactured
from EPDM.
轴承应该由聚四氟乙烯涂敷的中心为青铜的钢制造。
The bearing shall be manufactured from PTFE-coated
bronze centered on steel.
手柄是可锻铸铁，环氧树脂涂敷。节流刻度板由镀锌钢制成。
The handle is of malleable iron with epoxy coating.
The throttling index plates are made of zinc-plated steel.
阀门结构
Valve Design
阀体应该是对夹式，易于安装和维护，应该与150磅级ASME B16.5；BS 1560的150磅级；DN200 ISO 2084的PN10；和DN200
DIN 2532的PN10的螺栓孔兼容。
Valve body shall be of the wafer design for ease
on installation and maintenance and shall be compatible with bolt hole
pattern Class 150 ASME B16.5; BS 1560 class 150; DN 200 ISO 2084 PN 10;
and DN 200 DIN 2532 PN 10.
阀杆用花键锁在阀瓣上，以确保旋转灵活。阀杆通过特氟隆涂敷的轴承引导，以确保不会偏转。当手柄拆卸下来时，阀瓣位置由阀杆表示。
The shaft is splined to lock into the disc to
ensure positive rotation. The shaft is guided by teflon-coated bearings
to protect against deflection. Disc position is indicated by the shaft,
when the handle is removed.
铺设长度与MSS SP-67狭窄(W-1)和DN 200 ISO 5752短标准兼容。
Laying length is compatible with MSS SP-67 narrow
(W-1) and DN 200 ISO 5752 short.
标记
Markings
阀门上应该清楚的标记出制造商名称或商标，公称通径，材料结构，ASTM编号或相类似的符号表示与应用标准兼容，产地，和额定压力等级。阀门还要符合NSF(美国卫生设备基金会)国际认证标志，NSF-pw,
(经过认证适用于饮用水的传输)。
Valves shall be clearly marked with the manufacturer’s
name or trademark, nominal size, material designation, ASTM number or
equivalent symbol indicating compliance with applicable standards, country
of origin, and pressure rating. Valves additionally bear the NSF International
certification seal, NSF-pw, (verifying approval for the conveyance of
water).
性能
Performance
阀门的额定气泡密封压力应该适用于150 psi非冲击性水应用领域，水温为22oC。最小爆裂等级为额定工作压力的3.3倍。阀门应该经过第三方机构按照ASTM
F 1970进行认证。
Valves shall be rated bubble-tight at 150 psi
73oF non-shock water service. The pressure rating shall be
based on a minimum safety factor of 3.3. Valves shall be certified to
ASTM F 1970 by a third-party agency.
安装
Installation
根据指定工程师的选择，制造商应该为安装/维护人员提供免费现场训练(仅限于美国境内)。此外，安装应该按照制造商印刷说明书中的规定进行。
At the specifying engineer’s option, the manufacturer
shall provide, at no additional cost, on-site training for installation/maintenance
personnel (in USA only). Otherwise, installation shall be as specified
by the manufacturer’s printed instructions.
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150
PSI Y形阀 - Chemcock阀 - 刻度针形阀
DN6至DN25公称通径
150 P.S.I. Y-Pattern – Chemcock – Calibrated
Needle
1/4" through 1" Nominal Sizes |
范围
Scope
这个规定制定了对于用于工业、额定压力、流体处理系统，工作温度不超过60oC，精确控制和耐腐蚀性是最重要的考虑因素的PVC目录80专用特殊阀门的生产制造的要求。
This specification establishes the manufacturing
requirements for PVC Schedule 80 specialty valves for use in industrial,
pressure-rated, fluid-handling systems in applications up to 140oF,
where precise control and corrosion resistance are of prime importance.
材料
Materials
根据ASTM D 1784的规定，采用坚固的PVC (聚氯乙烯)制造的目录80阀门属于单元类别12454。
Rigid PVC (polyvinyl chloride) used in the manufacture
of Schedule 80 valves shall be Cell Classification 12454 as identified
in ASTM D 1784.
尺寸 / 阀门结构
Dimensions/Valve Design
这些阀门采用螺纹端口连接，其螺纹长度、直径和结构由ASTM D-2467和ASTM F 1498加以规定。
Valves utilizing threaded-end connections shall
have thread lengths, diameters, and configurations as required by ASTM
D-2467 and ASTM F 1498.
软管倒钩连接(Chemcock阀门)应该适用于连接到3/8英寸内径的标准软管上。
Hose-barb connections (Chemcock Valve) shall be
suitable for joining with /" to 3/8" I.D. measured flexible
hose.
这些阀门适用于多旋转节流控制，根据NPS /-1的规定，应该是截止阀结构。
Valves intended for multi-turn throttling control
shall be globe design in NPS /– 1.
Y形阀，适用于垂直180o安装，采用内管螺纹，配置双引线-螺纹阀杆控制，调节更加快速。这些阀门应该配置玻璃填充聚四氟乙烯密封，关闭更灵活，使用寿命更长，FPM密封能够更好的防止外泄漏。
Y-Pattern for straight 180o installations
using internal pipe threads and having double lead-thread stem control
for rapid adjustment. Valves shall have glassfilled PTFE seals for positive
shut-off and extended service-life and FPM seals for maximum protection
against external leaks.
角阀，适用于90o安装，采用内管螺纹，并且配置双引线-螺纹阀杆，调节更加快速。这种阀门应该配置玻璃填充聚四氟乙烯密封，关闭更加灵活，使用寿命更长，FPM密封能够更好的防止外泄漏。
Angle valve for 90o installations using
internal pipe threads and having double lead-thread stem control for rapid
adjustment. Valves shall have glass-filled PTFE seals for positive shut-off
and extended service-life and FPM seals for maximum protection against
external leakage.
为了使这些阀门具有最大的多功能性，类型A和B阀门都应该配置内部可更换的阀帽/阀杆总成。
For maximum versatility, both A and B type valves
shall have inter-changeable bonnet/stem assemblies.
针形阀适用于要求精确控制的应用场合。针形阀应该在阀体上具有8个增量模式的可预测流量标记。这些阀门应该配置聚四氟乙烯阀座和FPM密封，使其使用寿命更长，更有助于防止外泄漏。针形阀配置NPS内管螺纹连接端口。
Needle valves are intended for use in applications
that require precise metering control . Needle valves shall have predictable
flow patterns with (8) molded in increments on the body. These valves
shall have PTFE seats and FPM seals for maximum service life and protection
against external leakage. Needle valves have NPS / internal pipe threaded
ends.
Chemcock阀适用于实验室采样应用场合。Chemcock阀门配置NPS外螺纹连接端口；然而，阀门的一个端口应该能够改变为软管螺纹端口，使其具有最大的多功能性。
Chemcock valves are intended for use in laboratory
sampling applications . The Chemcock valves have NPS / external thread-by-external
thread-end connections; however, one end of the valve shall be capable
of being changed to hose-threads for maximum versatility.
额定压力等级
Pressure Ratings
阀门的额定压力应该适用于150 psi非冲击性水应用领域，水温为22oC。最小爆裂等级为额定工作压力的3.3倍。
Valves shall be rated for 150 psi at 73oF
non-shock water service and have a minimum burst requirement of 3.3 times
the rated pressure.
标记
Markings
阀门上应该清楚的标记出制造商名称或商标，公称通径，材料结构，和产地。PVC和CPVC阀门应该还要符合NSF(美国卫生设备基金会)国际认证标志，NSF-pw,
(经过认证适用于饮用水的传输)。
Valves shall be clearly marked with the manufacturer’s
name or trademark, nominal size, material designation, and country of
manufacture. PVC and CPVC valves shall additionally bear the NSF International
certification mark, NSF-pw, (verifying approval for conveyance of potable
water).
安装
Installation
根据指定工程师的选择，制造商应该为安装/维护人员提供免费现场训练(仅限于美国境内)。此外，安装应该按照制造商印刷说明书中的规定进行。
At the specifying engineer’s option, the manufacturer
shall provide, at no additional cost, on-site training for installation/maintenance
personnel (in USA only). Otherwise, installation shall be as specified
by the manufacturer’s printed instructions.
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