工程规格说明书范文
Sample Engineering Specification
所有热塑性塑料球阀应该是真活接True Union类型阀门，结构材料采用PVC类型I，ASTM D 1784分类12454或CPVC类型IV，ASTM
D 1784分类23447。所有O形环材质应该是EPDM或Viton®。所有阀门应该采用Safe-T-Shear®商标的阀杆和双重止动聚丙烯手柄。所有阀门活接头螺母应该是锯齿螺纹。所有密封托架应该是Safe-T-Blocked®商标的密封托架。所有阀门部件应该是可更换的。所有阀门应该获得美国国家卫生基金会NSF国际部认证，确认可用于饮用水应用场合。在水文23oC条件下，所有通径DN15~DN50的阀门压力等级应该是235
psi，而所有通径DN65~DN150的阀门和所有法兰阀门压力等级应该是150 psi，并由美国斯毕尔制造公司制造。
All thermoplastic ball valves shall be True Union
type constructed from PVC Type I, ASTM D 1784 Cell Classification 12454
or CPVC Type IV, ASTM D 1784 Cell Classification 23447. All O-rings shall
be EPDM or Viton®. All valves shall have Safe-T-Shear® stem and
double stop Polypropylene handle. All valve union nuts shall have Buttress
threads. All seal carriers shall be Safe-T-Blocked®. All valve components
shall be replaceable. All valves shall be certified by NSF International
for use in potable water service. All 1/2"
- 2" valves shall be pressure rated at 235 psi and all 21/2"
- 6" and all flanged valves shall be pressure rated at 150 psi for
water at 73oF, as manufactured by Spears® Manufacturing
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特点 - PVC，CPVC
Feartures - PVC, CPVC
这种通用、90度旋转关闭阀适用于工业和化工处理应用场合。可提供国际管道标准IPS通径DN15~DN100，带承插、螺纹或法兰连接端口的阀门。DN150文氏管阀门（DN100通径阀门配置DN100
x DN150适配器）也可提供承插或法兰连接端口。还可提供公制DN20~DN110或DN15~DN100英制螺纹连接端口。
This versatile, quarter-turn shutoff valve is
well suited for industrial and chemical processing applications. Available
in IPS Sizes 1/2" - 4" with socket, threaded
or flanged end connectors. 6" Venturied valve (4" valve with
4 x 6 adapter) available with either socket or flanged end connection.
Also available with metric 20mm - 110mm or 1/2"
- 4" BSP threaded end connectors.
- 耐化学品和耐腐蚀的PVC或CPVC材质结构
Chemical & Corrosion Resistant PVC or CPVC
Construction
- 管道壁厚标准Schedule 80全径结构
Schedule 80 Full-Bore Design
- 坚固的锯齿螺纹活接头螺母
Strong, Buttress Thread Union Nuts
- 完全可维修、完全可更换的部件
Fully Serviceable, Replaceable Components
- 美国斯毕尔公司Safe-T-Blocked®商标的密封托架
Spears® Safe-T-Blocked® Seal Carrier
- 自我调节的PTFE浮动阀座结构
Self Adjusting PTFE Floating Seat Design
- EPDM或Viton®材质的O形环
EPDM or Viton® O-rings
- 高强度抗冲击的聚丙烯手柄
High Impact Polypropylene Handle
- 美国斯毕尔公司Safe-T-Shear®商标的阀杆结构
Spears® Safe-T-Shear® Stem Design
- 通径DN15~DN50的阀门压力等级为235 psi @ 23oC，通径DN65~DN150阀门和所有法兰阀门压力等级为150
psi @ 23oC
Sizes 1/2" - 2"
Pressure Rated to 235 psi @ 73oF, Sizes 21/2"
- 6" and all flanged Pressure Rated to 150 psi @ 73oF
- 获得美国国家卫生基金会NSF认证，可用于饮用水应用场合
NSF Certified for Potable Water use
- 适用于真空应用场合
Suitable for Vacuum Service
- 采用无硅树脂、水溶性润滑剂组装而成
Assembled with Silicone-Free, Water Soluble Lubricants
- 制造工艺符合美国材料实验协会ASTM F 1970标准
Manufactured to ASTM F 1970
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