sdv 经济型pvc护套拖链专用动力电缆. sdv系列拖链电缆，多用于工业自动化，机电成套设备，机床等机械设备,物流传输系统等的动力系统供电。此系列电缆用于室内设备的拖链中，使用寿命良好。 全国销售热线：18168074686 15861385816. 在线咨询

SDV（shutdown valve）阀主要用于ESD系统中，为了保护设备，一般在设备的进出口处设置SDV阀，确保操作的安全性。 正常工况下，SDV为常开状态，当有紧急情况发生时，能够自动切断系统。

Poly(vinyl chloride) (PVC) is obtained by polymerization of vinyl chloride. The thermical stability is low, so it is used often together with stabilizers. It is stable against bases, acids, water, alcohols and oils. Many solvents like benzene have swelling properties for PVC. PVC does not assist burns so it is used in many applications.

Series 300 Construction Butterfly Valve -12 Valve and Features Stem Two-piece of stem's design facilitate easy assembly and field maintenance without the use of special tools. Two-piece of systems makes disc feature being streamlined minimizing …

Used in irrigation, underground sprinkler systems, swimming pools, outdoor applications and cold water supply line when used with PVC Schedule 40 Pressure Fittings; ASTM Specifications: ASTM D-1784, ASTM D-1785, ASTM D-2665; NSF certified

ALL SDR-26, SDR-21, AND SDR-13.5 PIPE IS CERTIFIED TO NSF/ANSI 61, ANNEX G (CA AND VT LEAD FREE LAWS) BY NSF INTERNATIONAL. CERTIFIED TO NSF/ANSI 372 (LEAD FREE LAWS). PRESSURE RATING IS THE ESTIMATED MAXIMUM PRESSURE THAT WATER AS THE MEDIUM IN THE PIPE CAN EXERT CONTINUOUSLY WITH A HIGH DEGREE OF CERTAINTY THAT FAILURE OF THE PIPE WILL NOT OCCUR.

内容提示： SDR (标准尺寸比)：又称标准外径尺寸比，为管材的平均外径与最小壁厚之间的比值。 常用于外径控制尺寸的塑料管材，是控制管壁厚度、决定承受内压的重要参数。 PN（公称压力） ：本标准中公称压力 PN 相当于管材在 20℃时的最大工作压力，单位为兆帕。

2024年4月11日 · This specification covers poly(vinyl chloride) (PVC) pipe made in standard thermoplastic pipe dimension ratios and pressure rated for water. Poly(vinyl chloride) plastics used to make pipe meeting the requirements of this specification are categorized in two criteria: short-term strength tests, and long-term strength tests.

2025年2月27日 · SDVCPVC防腐电磁阀由上海昆炼阀门制造有限公司发布，为您提供产品的价格报价、详细参数、规格型号、产品参考图片等信息，厂家多类产品一应俱全，欲了解更多SDVCPVC防腐电磁阀的产品参数、实时报价、市场行情等信息，请访问智慧城市网！

PRESSURE RATING IS THE ESTIMATED MAXIMUM PRESSURE THAT WATER AS THE MEDIUM IN THE PIPE CAN EXERT CONTINUOUSLY WITH A HIGH DEGREE OF CERTAINTY THAT FAILURE OF THE PIPE WILL NOT OCCUR. DO NOT USE PLASTIC PIPE AND FITTINGS FOR COMPRESSED AIR. CLEAN AND DRY THE INTERIOR OF GASKET BELL AND THE EXTERIOR OF THE PIPE SPIGOT.