Overview
The straight through bulkhead flare fitting is a specialized connector designed to pass tubing through partitions like machine panels, walls, or tanks without compromising the system's integrity. Its flare design ensures a tight seal by compressing the tube against the fitting body, preventing leaks even under high pressure. Widely used in industries requiring secure fluid or gas transfer, this fitting balances durability with ease of installation. Unlike standard fittings, the bulkhead variant includes a threaded body that anchors securely to the barrier, distributing mechanical stress evenly. This makes it indispensable in applications where vibrations or pressure fluctuations are common, such as in hydraulic machinery or automotive fuel lines.
Structure and Working Principle
The fitting consists of three primary parts: the threaded bulkhead body, a flare nut, and the mating sleeve. The body threads into the panel, while the flare nut compresses the tube’s flared end against the sleeve, creating a metal-to-metal seal. This design eliminates the need for additional gaskets, reducing failure points. Materials like brass offer corrosion resistance for water-based systems, while stainless steel suits high-pressure or corrosive environments. The straight-through configuration ensures minimal flow restriction, making it efficient for dynamic systems. Proper installation requires aligning the tube’s flare precisely with the fitting’s cone to avoid leaks.
Key Features
Pressure resistance is a standout feature, with ratings typically ranging from 3,000 to 10,000 PSI depending on material and design. The flare connection’s mechanical grip outperforms compression fittings in high-vibration settings, reducing maintenance needs. Another advantage is versatility in tube materials; it accommodates copper, steel, and even certain plastics when paired with compatible sleeves. Bulkhead fittings often comply with industry standards like SAE J514 or ISO 8434, ensuring interoperability with global systems. Some variants include anti-rotation flats to simplify wrench use during assembly.
Application Areas
Industrial hydraulics rely heavily on these fittings for connecting pumps, valves, and actuators across machine frames. Their leak-proof nature is critical in systems where fluid loss could damage equipment or halt production. In automotive applications, they route fuel and brake lines through firewalls securely. Aerospace and marine sectors use corrosion-resistant versions for fuel and coolant systems. Even HVAC installations employ bulkhead fittings to penetrate enclosures without compromising insulation or safety.
Maintenance and Precautions
Regular inspections should check for thread wear or flare deformation, especially in high-cycle systems. Re-tightening after initial installation may be necessary due to material settling, but excessive force can crack the flare. For maintenance, always depressurize the system before disassembly. Use thread sealant sparingly on male threads only—applying it to the flare face can cause leaks. Replace fittings showing signs of corrosion or wall thinning, as these weaken pressure containment.
B2B Procurement Guide
Bulk purchases often qualify for volume discounts; negotiate pricing for orders exceeding 1,000 units. Lead times vary by material: stainless steel fittings may take longer due to machining complexity compared to brass. Specify requirements clearly: include thread type (e.g., NPT, BSPP), tube outer diameter, and pressure rating. For custom applications, suppliers can modify thread lengths or provide metric-to-imperial adapters. Reputable manufacturers provide test certificates for material composition and pressure testing upon request.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：玻璃钢桥架、压力表缓冲管、防爆接线箱、中间接头、防爆挠性连接管、阀组、仪表阀门
- 主营：[]
- 主营：橡胶管、高压胶管、橡胶软管、锥接头、管接头、液压接头、不锈钢接头、注塑机接头、金属接头、316L接头、过渡接头、油堵接头、异型接头、焊接接头、直通接头、304接头、直角弯头、三通接头、螺纹接头、外螺纹接头、304金属软管、液压胶管、法兰金属软管
- 主营：[]
- 主营：[]
- 主营：软连接、单法兰、epdm橡胶、管接头、橡胶接头、单球金属、防水套管、出口橡胶、管道变径、密闭套管、橡胶弯头、预埋密闭、法兰橡胶、橡胶扣槽、耐酸碱橡胶、全密封橡胶、不锈钢橡胶、密闭通风管、橡胶减震器、大翻边橡胶、耐酸碱卡箍、柔性通风管、性防护密闭、密闭钢套管、球镀锌法兰
- 主营：[]
- 主营：胶管接头、不锈钢接头、不锈钢过渡接头、伊顿永华标准接头、高压胶管、金属软管、胶管总成
- 主营：软连接、波纹管、螺母连、管接头、过渡接头、转换接头、测压接头、焊接接头、液压接头、螺纹接头、双外丝接头、定制样、卡盘连、聚氨酯、法兰焊、缓冲块、法兰连接、塑料管夹、金属软管、丝扣螺母、橡胶制品、铝合金管夹、耐高温软管、橡胶密封圈、高压橡胶管
- 主营：液压配件、五金制品、液压管总成、直角接头、农机配件
- 主营：仪表管件、仪表阀门、截止阀、扩口式直通终端接头、仪表保护温箱、防爆电器、电缆桥架、梯式电缆桥架、槽式电缆桥架、托盘式电缆桥架、铝合金电缆桥架、玻璃钢电缆桥架、热镀锌电缆桥架
- 主营：齿轮泵、叶片泵、柱塞泵、变量泵、马达、换向阀、比例阀
- 主营：派克接头、派克不锈钢接头、派克管、parker、派克液压
- 主营：自动取样阀、柱塞阀、耐腐蚀取样阀、双卡套式直通中间接头、采样阀、柱塞放料阀、无菌取样阀、一体阀、柱塞取样阀、手动取样阀、法兰取样阀、沥青取样阀、取样阀门、自复位取样阀、高压取样阀、电动球阀、密闭取样阀、高密封取样阀、气动球阀、QYF、气体取样阀、电动蝶阀、反应釜取样装置、衬氟取样阀、气动蝶阀、不锈钢取样阀
- 主营：金属补偿器、非金属补偿器、金属软管、补偿接头、膨胀节、非金属膨胀节、波纹管、金属波纹管
- 主营：软管、PVC五腔显影管、五腔显影管、显影引 流管、TPU双腔引 流管、TPU连接管、TPU制 氧机定型管、氧气管路、三腔挤出管、TPU 三腔挤出管、流体输送管、耐折耐磨流体输送管、显影管、连接管、设备配套用气管水管、tpu三腔管、挤出管、输送管、制 氧机定型管、气管水管、引 流管、双腔管、PVC管、TPU管、tpu双腔引 流管
- 主营：密封条、硅胶条、高压胶管、过渡接头、三通管接头、翻边接头异形管、对焊法兰、法兰弯管、异形法兰件、铁合金离合器橡胶气囊、电炉抱闸铁瓦、翻瓶器
- 主营：燃油管接头、连接器
- 主营：纲丝胶管、金属软管、高压胶管、胶管接头、对丝接头、不锈钢接头、液压接头、螺旋护套
- 主营：压管机、扣压机、锁管机、不锈钢接头、超薄电脑版扣压机、啤管机、扣管机、高压油管、油管总成、剥胶机
- 主营：节能管道、超级管道、铝合金管道、压缩空气管道、空压机管道、压缩空气铝合金管道、铝合金空压机管道、空气管道、蓝色铝合金管道
- 主营：硅胶管、化妆品、钢丝夹布、外丝D型螺纹接头、硅胶包覆、弯头变径、压缩空气、硅胶软管、分支软管、透明软管、钢丝编织、四氟软管、变径硅胶、食品级软管、光滑铁氟龙、食用油软管、硅胶变径软、制药钢丝软管、硅胶食品级夹、硅胶钢丝软管、金属编织软管、生物制药钢丝、通风管大小头、透明钢丝软管、钢丝耐寒软管