# 单向阀- CK-4A > 派克CK4 单向阀在制冷系统回气端、热气端和供液管处阻止制冷剂的反向流动。 所属技术：流体连接 ## 系列介绍 Parker CK4系列单向阀设计成可与控制主阀直接连接，以降低安装的总长度、复杂性及成本。此阀可在各种制冷应用中阻止介质逆向流动，可以与主阀一体安装，也可与独立安装。当作为独立部件时，CK4可在所需位置安装。此紧凑型阀为弹簧强制关闭，并配置重叠式不锈钢或镀铬阀座以实现关闭及低泄露。此阀需要不小于0.05 bar的开启压差。可拆卸阀座与组合式O形圈及金属刀口密封方式允许阀体进行现场拆卸维护。如需与其它RS控制阀直接连接，需要增订阳性转接环。 市场: • 工业制冷 • 商用制冷 特性及益处: • UL认证 (3”以下) • 可安装在所需位置 • 结构紧凑 • 重量轻 • 紧密连接 • 设计压力 (MRP): 34.5 Bar (500 psi) 应用: • 再循环 (过量供液)系统 • 高速压缩机排气端 • 泵出口 • 回气端，温度低至-45°C (-50°F) • 热气管(接水盘至蒸发器) • 不适用于往复式压缩机及螺杆压缩机经济器接口 ## 技术参数 | 参数 | 值 | 单位 | | --- | --- | --- | | 型号 | 请根据产品订货号区分产品 | | | 最大运行压力 | 34.5 bar, 500 psig | | | 最低运行温度 | -50 °C, -60 °F | | | 最高运行温度 | 105 °C, 220 °F | | | 压降 | 0.05 或 0.04 bar, 0.04 bar, 0.75 或 0.60 psig, 0.60 psig | | | 运行类型 | 弹簧关闭 | | | 阀门类型 | CK4 | | | 端口尺寸 | 15 到 80 mm, 1/2" 到 8" inch | | | 法兰面类型 | FPT, ODS, Socket Weld, Weld Neck, 无法兰, ODS, Socket Weld, Weld Neck, No Flange | | | 连接尺寸 | None 或 1/2" 至 8", 1/2 to 8 inch | | | 包括转接环 | 无转接环或带阳转接环, Male Adapter Ring | | | 阀门材料 | 标准材质或符合 PED 材质, Meets Pressure Equipment Directive (PED) | | | 镀层类型 | 无镀层、镀锌、镀层-无镀层, Zinc Plated, Painted- No Plating | | | 阀体材料 | 铸钢、铸钢 (A-352 GR, LCB)，球墨铸铁(GGG-40.3), Cast Steel (A-352 GR, LCB), Ductile Iron (GGG-40.3) | | ## 型号入口（首批） - [CK413F06NSN](https://hypher.com.cn/products/model/ck413f06nsn-69cf8431f1280ac3/index.md) - [CK413F10NSN](https://hypher.com.cn/products/model/ck413f10nsn-a0edf1b965800a9a/index.md) - [CK413F13MSN](https://hypher.com.cn/products/model/ck413f13msn-5f4430e954f081ae/index.md) - [CK413F13NSN](https://hypher.com.cn/products/model/ck413f13nsn-fa4000b4c58b7539/index.md) - [CK413F20MSN](https://hypher.com.cn/products/model/ck413f20msn-6c2107254174fa5b/index.md) - [CK413F20NSN](https://hypher.com.cn/products/model/ck413f20nsn-c660007bf305d9ba/index.md) - [CK413K05NSN](https://hypher.com.cn/products/model/ck413k05nsn-f3aa969ee27040cf/index.md) - [CK413K13NSN](https://hypher.com.cn/products/model/ck413k13nsn-f47f508ad644600f/index.md) - [CK413S10NSN](https://hypher.com.cn/products/model/ck413s10nsn-641ce13c0978c802/index.md) - [CK413S13MSN](https://hypher.com.cn/products/model/ck413s13msn-6aadd504878d23d8/index.md) - [CK413S20MSN](https://hypher.com.cn/products/model/ck413s20msn-04b8890af5c585dc/index.md) - [CK413S20NSN](https://hypher.com.cn/products/model/ck413s20nsn-94ea9f9da21b03cb/index.md) - [CK413W13NSN](https://hypher.com.cn/products/model/ck413w13nsn-47a23462089a29bd/index.md) - [CK413W20MSN](https://hypher.com.cn/products/model/ck413w20msn-9c07743bd5e09bd4/index.md) - [CK413X00MSN](https://hypher.com.cn/products/model/ck413x00msn-01f90694668e89db/index.md) - [CK413X00NSN](https://hypher.com.cn/products/model/ck413x00nsn-89420e01e019c830/index.md) - [CK420F25NSN](https://hypher.com.cn/products/model/ck420f25nsn-96661a683d44d4c5/index.md) - [CK420F32NSN](https://hypher.com.cn/products/model/ck420f32nsn-26d988b89c2f95ef/index.md) - [CK420K07MSN](https://hypher.com.cn/products/model/ck420k07msn-3a4b302f9899ea71/index.md) - [CK420K07NPN](https://hypher.com.cn/products/model/ck420k07npn-d72dd689a8538c07/index.md) - [CK420K07NSN](https://hypher.com.cn/products/model/ck420k07nsn-177ec60ad52135e1/index.md) - [CK420K09NPN](https://hypher.com.cn/products/model/ck420k09npn-f7d5d76fc27b8a3a/index.md) - [CK420K09NSN](https://hypher.com.cn/products/model/ck420k09nsn-febbf24912b1f384/index.md) - [CK420K11NPN](https://hypher.com.cn/products/model/ck420k11npn-6b719219bec8153b/index.md) ## 技术资料与 CAD - [Check Valves: CK4A (Bul. 50-20)](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Product-Bulletins/050022.pdf)：document - [Check Valves: CK4A DN (Bul. DN 50-16)](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Product-Bulletins/310230.pdf)：document - [Declaration of Conformity - CK-4A Flanged Check Valves](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Declaration-of-Conformity/314086.pdf)：document - [Declaration of Conformity - CK-4A Flanged Check Valves](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Declaration-of-Conformity/311171.pdf)：document - [EU Declaration of Conformity Flanged Check-Valve CK4A DN15 to 100](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Declaration-of-Conformity/EU%20Declaration%20of%20Conformity%20Flanged-Check-Valve%20CK4A%20DN15%20to%20100.pdf)：document - [Product Bulletin - Check Valve -- Type CK4A Port Size 13 - 100mm (1/2” - 4”)](https://www.parker.com/content/dam/Parker-com/Literature/Refrigerating-Specialties-Division/Literature/Product-Bulletins/050280.pdf)：document - [Refrigerating Specialties Valve Selection Program (VSP)](https://discover.parker.com/vsp)：document - [查看目录](https://hypher.com.cn/library-assets/e7b65e145a65c3276170c6e1c5a90f3adda4598ee0333aa32f04854a21ab5926.pdf)：document 资料来源：[原始系列资料](https://ph.parker.com/cn/zh/product-list/check-valves-ck-4a) 价格、库存和交期请联系上海海费确认。更多型号和资料见 [完整系列页面](https://hypher.com.cn/products/fluid-connectors/check-valves-ck-4a)；[联系技术支持](https://hypher.com.cn/contact)