Parker 针阀 Parker Needle Valves
Needle Valve, Double Block and Bleed 20DBNV Series - 20,000 PSI

Parker Autoclave 的 20DBNV 系列是一种三阀块和排放紧凑型系统，专为仪器系统的阻断、排放和校准而设计。该阀门采用非旋转上升杆设计，额定压力为 20,000 psi (1379 bar)。派克 Autoclave 的 20DBNV 系列双截止和排放针阀是一种三系统歧管阀，提供了一种经济且方便的方法来阻断、排放和校准压力变送器和仪表。该阀门采用标准阀门填料和阀杆设计，使其紧凑且易于使用。

这些阀门采用上升杆棒料阀体设计，工作压力高达 20,000 psi (1379 bar)。锥体和螺纹连接采用 Parker Autoclave 管，尺寸从 1/4" 到 3/8""。使用特殊的石墨编织纱线填料 (GY)，工作温度可以从 0°F 到 800°F（-17.8°C 到 427°C）。316 不锈钢结构是标准材料，可提供其他选项。除了它们的许多功能外，这些阀门还可以在各种应用中提供可靠且无故障的服务。

Needle Valve, Double Block and Bleed 20DBNV Series - 20,000 PSI

市场：
- 石油和天然气
- 石化
- 化学

特性/优点：
- 20DBNV 系列阀门设计以小封装提供大阀门性能。
- 管道尺寸：1/4" 至 1"。
- 上升的把立/杆身设计。
- 金属对金属阀座可实现气密关闭、更长的阀杆/阀座在磨料
流中的使用寿命、更高的重复开/关循环的耐用性和出色的耐腐蚀性。
- PTFE 封装填料提供可靠的阀杆和阀体密封。
- 选择阀杆和填料压盖设计以延长螺纹循环寿命并降低手柄扭矩。
- 温度范围为 -100°F (-73°C) 至 600°F (316°C)

应用：
- 校准变送器
- 仪表测试
- 压力监测和测试
- 化学品注入

Parker Autoclave's 20DBNV Series is a three valve block and bleed compact system that is designed for blocking, bleeding, and calibration of instrumentation systems. This valve is a non-rotating rising stem design, rated to 20,000 psi (1379 bar).

Parker Autoclave's 20DBNV Series double block and bleed needle valves are a three system manifold valve providing an economical and convenient method of blocking, bleeding and calibrating pressure transmitters and gauges. The valve utilizes standard valve packing and stem design making it compact and easy to use.

These valves have a rising stem bar stock body design with working pressures to 20,000 psi (1379 bar). The cone and thread connections utilize Parker Autoclave tubing with sizes from 1/4" to 3/8”". Operating temperatures can go from 0°F to 800°F (-17.8°C to 427°C) with special graphite braided yarn packing (GY). 316 stainless steel construction is the standard material with other options available. Along with their many features these valves provide dependable and trouble free service in wide variety of applications.

Markets:
- Oil and Gas
- Petrochemical
- Chemical

Features/Benefits:
- 20DBNV Series valve design provides large valve performance in a small package.
- Tubing sizes: 1/4" to 1".
- Rising stem/bar stock body design.
- Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive
flow, greater durability for repeated on/off cycles and excellent corrosion resistance.
- PTFE encapsulated packing provides dependable stem and body sealing.
- Stem and packing gland design have been selected to achieve extended thread cycle life and reduced handle torque.
- Temperatures from -100°F (-73°C) to 600°F (316°C)

Applications:
- Calibrating Transmitters
- Gauge Testing
- Pressure Monitoring and Test
- Chemical Injection

Technical Specifications

Needle Valve, Double Block and Bleed 20DBNV Series - 20,000 PSI 型号