Overview
Brass female thread compression fittings are precision-engineered components designed to create secure, leak-proof connections between threaded pipes and tubing. They combine a female threaded end with a compression mechanism, making them versatile for industrial and commercial fluid systems. These fittings are favored for their balance of strength and malleability, ensuring tight seals even under vibration or thermal expansion. Their brass construction offers natural resistance to dezincification and corrosion, particularly in water and oil applications.
Structure and Working Principle
The fitting consists of three main parts: a brass body with female threads, a compression nut, and a ferrule (olive). The threaded end screws onto a male-threaded pipe, while the compression end grips the tubing when the nut is tightened, deforming the ferrule for a permanent seal. This mechanical sealing method eliminates the need for welding or adhesives, allowing for quick installation and disassembly. The design maintains integrity across pressures up to 1,000 PSI (varies by size) and temperatures ranging from -20°C to 150°C.
Key Features
Durability is a hallmark of brass fittings, with a lifespan exceeding 10 years in standard conditions. Their non-sparking properties make them safe for flammable environments, unlike steel alternatives. Manufacturers often apply electroless nickel plating for enhanced corrosion resistance in harsh chemicals or marine settings. The reusable design (up to 3–5 reconnections) reduces maintenance costs compared to single-use fittings.
Application Areas
These fittings are ubiquitous in hydraulic machinery, compressed air systems, and fuel lines. Plumbers use them for potable water connections due to brass’s lead-free compliance (e.g., NSF/ANSI 61-certified variants). In manufacturing, they appear in CNC coolant lines and pneumatic controls. Their compatibility with copper, nylon, and polyethylene tubing expands their utility across industries from agriculture to pharmaceuticals.
Maintenance and Precautions
Regular inspections should check for thread wear or ferrule deformation. Lubricate threads with PTFE tape or paste to prevent galling during installation. Avoid using with chlorinated water or ammonia-based fluids unless specially coated, as these can cause stress corrosion cracking. Always torque to manufacturer specifications—over-tightening may crack the ferrule or distort the tubing.
B2B Procurement Guide
Bulk purchases (100+ units) typically reduce costs by 15–30%. Verify certifications like RoHS or REACH for EU markets. For custom orders, lead times average 4–6 weeks for specialized threading or coatings. Reputable suppliers provide pressure test reports and material certificates. Consider MOQs: standard sizes often have 500-unit MOQs, while metric variants may require 1,000+ units. Port cities like Shanghai offer logistic advantages for export-focused buyers.
Related Manufacturers
- 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、三通接头、螺纹接头、外螺纹接头、304金属软管、直角弯头、液压胶管、法兰金属软管
- 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：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：门开关、排胶阀、稳压阀、转接头、黄铜卡套、卡套接头、快速接头、树脂接头、黄铜接头、快插接头、弹簧接头、液压接头、特氟龙接头、阻燃管、点胶机、铝塑管、隔膜泵、液压管、多束管、尼龙管、涂料管、树脂软管、液压软管、涂装用管、可定制总成
- 主营：阀门系列、管件、水管配件、铜闸阀管接头、管件接头、螺纹接头、热熔接头、排水管、pvc管件、铝塑管、地热管、ppr水管、热熔配件、工程配件、管道配件、开关阀门、管道管件、冷热水管、地暖水管、排污管材、水暖管件、水管管件、热熔管件、塑料水管、自来水管
- 主营：PPH管、PPH管件、PPH球阀、PPH管内丝直接、PPH蝶阀、PPH弯头
- 主营：金属软管、大口径波纹管、补偿器、橡胶接头、波纹补偿器、内衬四氟金属软管、不锈钢法兰金属波纹管、橡胶软连接、大口径法兰胶管、大口径橡胶管
- 主营：高压胶管、金属软管、塑料管夹、对丝接头、单卡高压卡套、黄铜液压接头、法兰挠性连接头、金属波纹管、液压油管管卡、钢丝透明软管、衬四氟软连接、液压橡胶软管
- 主营：防爆活接头、三通接线盒、防爆穿线盒、防爆接线盒
- 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：DIN扣压母接、水粉混合机、卫生级离心泵、快速接头、硅胶管接头、扣压公接头、软管母头接头、法兰扣压接头、螺纹扣压接头、tc卡盘扣压接头、DIN扣压公接头、固定法兰扣压接头、衬氟接头、装旋转扣压接头、衬氟快速接头、不锈钢SMS平接头、快装皮管接头、导静电快速扣压接头、钢衬四氟管、不锈钢波纹管、PU工业软管、衬氟快速公头、不锈钢DIN螺母
- 主营：液压配件、五金制品、液压管总成、胶管接头、农机配件
- 主营：防爆配电箱、防爆控制箱、防爆接线箱、防爆管接头、防爆电源箱、防爆正压柜、防爆照明箱、防爆动力箱、防爆检修箱、防爆变频柜、防爆电控柜、防爆动力照明箱、防爆动力配电箱、防爆动力照明配电箱、防爆检修电源箱、防爆插座箱、防爆开关箱、防爆空调、防爆操作柱、防爆穿线盒、防爆箱、防爆挠性连接管、防爆挠性管、防爆配电柜、防爆控制柜
- 主营：不锈钢无缝管、脱脂不锈钢管、卫生级不锈钢管、不锈钢焊管、不锈钢方管、内外镜面不锈钢管、精密不锈钢管、低温不锈钢无缝管、304不锈钢管、316L不锈钢管、304L不锈钢管、321不锈钢管、904L不锈钢管、不锈钢角钢、不锈钢槽钢、不锈钢弯头、不锈钢三通、不锈钢异径三通、卫生级管件、不锈钢阀门、大口径不锈钢焊管、酸洗钝化不锈钢管、BA不锈钢气源管、高压细水雾管道
- 主营：j13w-160p、方形视镜、防爆射灯、皮管接头、卡箍接头、压力表接头、美式双卡套、人孔配件、玻璃平板、旋转喷头、法兰考克、焊接玻璃、卡箍球阀、旋转洗罐、卡箍堵头、空气阻断、洁净空气、pp折叠滤芯、板式液位计、管道过滤器、三通旋塞阀、法兰截止阀、片穿墙套管、旋转清洗球、液位计考克
- 主营：防爆穿线盒、防爆挠性管、防爆接线盒、防爆活接头、防爆配电箱、防爆管件、防爆操作柱
- 主营：车配件、密封圈、注液枪、接头可、管接头、接头座、接头配件、接头弯头、卡套接头、管件接头、过渡接头、接头高压、接头液压、伸缩接头、接头金属、密封件、单向锁、矿山配件、编织胶管、标准弯头、三通焊接、高压三通、煤矿电机、矿用三通、异径三通
- 主营：304不锈钢无缝管、316L不锈钢管、脱脂不锈钢管、卫生级不锈钢管、不锈钢焊管、不锈钢方管、BA不锈钢管、拉丝不锈钢方管、EP电解抛光不锈钢管、精密不锈钢管、大口径不锈钢焊管、316L高压细水雾管、2205无缝管管、2507不锈钢管、食品级不锈钢管、不锈钢盘管、软态不锈钢管、不锈钢弯头、不锈钢三通、不锈钢法兰、卫生级管件、不锈钢异径管、不锈钢阀门、904L不锈钢、201不锈钢管
- 主营：pp管、frpp管、pph管、PP内丝、pp风管、pvdf管、pvdf阀门、pph板材、frpp阀门、cpvc管、upvc管、cpvc焊条、pvdf焊条、pp阀门、化工防腐管道、通风排水管、PP管、PPH管、PVDF管