流动系数评估 control valves flow coefficient evaluation

MAIN FEATURES
High capacity (Cv) | High rangeability | Tight shut-off | Special design for sensitive control | Compact design | Low emission stem packing | Fast operating time | Fire-safe design
Multi-stage ball valves
Multi-stage ball valves are designed to operate against high pressure drops providing excellent control capability and noise attenuation during a long service life.
CFD ANALYSIS, FLOW CALCULATION & TESTING FACILITIES
DAFRAM calculation software is the primary instrument for sales dept. engineers to evaluate a preliminary solution before the fine tuning activity carried out during engineering phase.
LIGHT SERVICE
MEDIUM SERVICE
V-Shaper Ball (VSB): V-port seat, trunnion mounted | Up to 48” | ANSI 150 to 4500 - API 2000 to 20000
Disk Controller Ball (DCB): Trunnion mounted with drilled disk | Up to 48” | ANSI 150 to 4500 - API 2000 to 20000
SEVERE SERVICE
Stream Tuner Ball (STB): Multistage ball, trunnion mounted | Up to 48” | ANSI 150 to 2500 - API 2000 to 10000
Noiseless Ball (NLB): Special multistage ball, trunnion mounted | Up to 48” | ANSI 150 to 2500 - API 2000 to 10000

说明: 分类：控制球阀; 日期：2015年4月17日

Control valve zh

高性能的测量设备允许DAFRAM公司收集了可靠的实验数据，确保了阀门在每次工作条件下的可预测行为。一旦知道了顾客对流体特点的规格要求之后，预期的流动温度，压力水平，流量流动速率，DAFRAM公司研发的控制球阀可以完美的满足工序的结构要求.
双平台确保了DAFRAM公司控制球阀一个完整地设计验证和一个在测试与计算结果中极其精准的联系.

DAFRAM S.p.A.是一个专业的高品质球阀制造商，其产品用于化工，石油化学制品，油气，发电，开关和压力流量控制应用.

作为一个不间断产品开发的结果，DAFRAM公司的车间经常更新。
DAFRAM公司在阀门的组件加工，钻孔和测试方面使用最先进的制造技术.
除了两个动力设计来评价球阀控制能力之外，纵向与横向的测试机器允许DAFRAM公司在产品离开工厂前对产品100%的设计，掌控与验证.
标准的控制测试执行IEC 60534规格。开关测试满足BS 6755, API 6D, API 6DSS, API 6A and API 598.需求。其他的测试规范与操作将紧跟客户需求.

ico pdf DAFRAM 公司控制球阀系列