API 6D 摆动式止回阀

API 6D / BS 1868 法兰式摆动止回阀 150–1500 级

蔚德力阀门 API 6D 摆动式止回阀 可自动防止石油、天然气、石化、电力及工业管道系统中的倒流。该阀门提供碳钢、不锈钢和特种合金材质，压力等级符合ASME 150级至1500级标准。

  • 阀门类型： 摆动式止回阀
  • 设计标准： API 6D、BS 1868 和 ASME B16.34
  • 尺寸范围： NPS 2–24 / DN50–DN600
  • 额定压力： ASME 150–1500级
  • 车身材料： WCB、CF8、CF8M、CF3及其他合金
  • 端点连接： RF、RTJ 或对焊端
  • 测试标准： API 598

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描述

API 6D / BS 1868 Flanged Swing Check Valve

该 蔚德力阀门 API 6D 摆动式止回阀 is designed to allow flow in one direction and automatically prevent reverse flow when the upstream pressure decreases. It protects pumps, compressors and other pipeline equipment from backflow and pressure reversal.

The valve features a swing-type disc and a straight-through flow passage for low flow resistance. Depending on the selected design and flow direction, it can be installed in horizontal piping or vertical piping with upward flow.

Design Features

  • Swing-type disc provides automatic non-return operation.
  • 直通式流道有助于减少压力损失。.
  • Internal hinge pin construction reduces potential external leakage points.
  • Bolted cover construction provides convenient inspection and maintenance.
  • Pressure-seal cover construction is available for Class 900 and higher-pressure configurations.
  • Renewable or welded seat surfaces are available according to material and service requirements.
  • RF, RTJ and butt-weld end connections can be supplied.
  • Carbon steel, stainless steel and special-alloy materials are available.

适用标准

项目Applicable Standard
设计与制造API 6D、BS 1868 和 ASME B16.34
面对面的维度ASME B16.10
法兰尺寸ASME B16.5 / ASME B16.47 where applicable
Butt-Weld EndsASME B16.25
压力-温度额定值ASME B16.34
检验与测试API 598

压力测试数据

Pressure ClassShell 测试Water Seat TestAir Seat Test
MPapsiMPapsiMPapsi
Class 1503.14502.23150.5–0.760–100
Class 3007.811255.6815
Class 60015.3222511.21630
Class 90023.1335016.82440

可用材料

组件可用材料
Body and CoverASTM A216 WCB, ASTM A351 CF8, CF8M, CF3 and CF3M
Disc and HingeWCB, CF8, CF8M, CF3, CF3M or Monel
Hinge PinF6a, F304, F304L, F316, F316L or Monel
Disc Seating Surface13Cr, 304, 304L, 316, 316L, Stellite or Monel
Body Seat Surface13Cr, 304, 304L, 316, 316L, Stellite or Monel

The final body, trim and seating materials should be selected according to the medium, chloride concentration, operating temperature, pressure and corrosion conditions.

Class 150 Main Dimensions

NPS2英寸2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸18英寸20英寸24英寸
DN506580100125150200250300350400450500600
L (mm)2032162412923303564956226997878649789781275
H（毫米）142166178236252266314368429455410560600880

Class 300 Main Dimensions

NPS2英寸2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸18英寸20英寸24英寸
DN506580100125150200250300350400450500600
L (mm)26729231835640044453362271183886497810161346
H（毫米）165185205228250275325378410480530575630860

Class 400 Main Dimensions

NPS2英寸2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸18英寸20英寸
DN506580100125150200250300350400450500
L (mm)29233035640645749559767376288990210161054
H（毫米）190203229267292330381406457528546597635

Class 600 Main Dimensions

NPS2英寸2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸18英寸20英寸24英寸
DN506580100125150200250300350400450500600
L (mm)292330356432508559660787838889991109211941397
H（毫米）2032292352862923303814575848356847529751111

Class 900 Main Dimensions

NPS2英寸2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸
DN506580100125150200250300350400
L (mm)36841938145755961073783896510291130
H（毫米）216254292318343368432546660782838

Class 1500 Main Dimensions

NPS2-1/2英寸3英寸4英寸5英寸6英寸8英寸10英寸12英寸14英寸16英寸
DN6580100125150200250300350400
L (mm)419470546673705832991113012571384
H（毫米）1932462883243734665368579501020

Dimension tables are for preliminary product selection. Final dimensions may vary with flange facing, end connection, body material, pressure-seal construction and customer requirements. Always refer to the approved WDL Valve drawing.

典型应用

  • Oil and natural gas transmission pipelines
  • Petroleum refining and petrochemical processing
  • Chemical and fertilizer plants
  • Power generation and steam systems
  • Water treatment and industrial water systems
  • Marine and offshore piping systems
  • High-pressure and high-temperature process lines

订购信息

When requesting a quotation, please provide the nominal size, pressure class, body material, trim material, flange facing, service medium, operating pressure, operating temperature and required inspection documents.

WDL Valve can supply material certificates, dimensional drawings and pressure test reports according to the agreed order requirements.

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