Tube Fittings
90° Double Ferrules Male Elbow
Stark 90° male elbow for leak-free, space-saving connections. Forged 316SS, Swagelok & Parker compatible. Ideal for connecting tubing to instrument ports at a right angle. 24h quote!
Double Ferrules Male Elbow Fitting: 90° High-Integrity Connector
Optimize your system layout and eliminate stress points with a robust 90° connection. The Stark Double Ferrules Male Elbow is engineered to connect a tube line directly to a female threaded port at a right angle, providing a secure, leak-free transition. Its compact, one-piece forged 316/316L stainless steel design is ideal for tight installations on instruments, panels, and manifolds where space is at a premium.
✓ Space-Saving 90° Design| ✓ Trusted by 1,200+ Global Enterprises| ✓ Zero-Leak Performance Guarantee
🔧 Find Your Elbow Size in 3 Clicks
1. Select Tube O.D.:○ 1/4" ○ 1/2" ○ 6mm ○ 12mm ...
2. Select Thread Type:○ NPT ○ BSPT ○ BSPP ...
🔥 Most Popular Sizes (In Stock - Same Day Shipping)
1/4" Tube x 1/4" NPT | 1/2" Tube x 1/2" NPT | 6mm Tube x 1/4" NPT | 12mm Tube x 1/2" NPT |
SS-ME-FT4-MN4 | SS-ME-FT8-MN8 | SS-ME-MT6-MN4 | SS-ME-MT12-MN8 |
Part Number Format: [Material]-ME-[Tube Size]-[Thread Size] (e.g., INC625-ME-FT4-MN4)
(ME = Male Elbow)
(FT / MT = Sizing System (Fractional Tube / Metric Tube))
🛠 The Engineering Advantage
- Eliminates Stress with One-Piece Forged Body: Unlike using a straight connector plus a separate threaded elbow, our one-piece forged design eliminates a threaded connection point. This reduces potential leak paths and creates a much stronger, more vibration-resistant connection directly at the instrument port.
- Compact Design for Tight Spaces: The 90° profile allows for immediate directional change of the tubing right at the connection point, perfect for crowded instrument panels, compact OEM equipment, and installations close to walls or other obstructions.
- Guaranteed Interchangeability: Fully compatible with Swagelok® and Parker A-LOK® male elbows, allowing for confident MRO replacements and seamless integration into existing systems without compromising performance.
- Reliable Reassembly with Anti-Galling Nuts: Every tube-side nut is internally silver-plated as a standard feature. This prevents thread seizing (galling) and ensures the tube connection can be reliably disassembled and reassembled 20+ timesfor maintenance.
📈 Technical Specifications
Feature | Stark Standard Specification | Optional Advanced Upgrades |
Body Material | Forged316/316L Stainless Steel | Duplex 2205, Super Duplex 2507, Inconel 625, Hastelloy C276, Monel 400, etc. |
Thread Types | NPT, BSPT (ISO 7/1), BSPP (ISO 228/1), SAE/UNF | Custom thread configurations |
Pressure Rating | Up to 10,000 PSI (689 bar) | Custom High-Pressure Configurations |
Testing | 100% Pneumatic Tested at 1.1x WP | Helium Leak Testing (1 x 10⁻⁹ sccs) |
Compliance | MTR to EN 10204 3.1 & PMI Verified | NACE MR0175 / NORSOK M-650 |
🎯 Why Choose a Stark Male Elbow? A Head-to-Head Comparison
Feature | Using a Straight Connector + Threaded Elbow | Using One Stark Forged Male Elbow |
Potential Leak Paths | ⚠️ 3 (1 tube, 2 thread) | ✅ 2 (1 tube, 1 thread) - 33% Reduction in Leak Risk |
Installation Time | ❌ High (Requires 2 components, alignment) | ✅ Low (Single component installation) |
Space Requirement | ❌ Larger, bulky footprint | ✅ Compact, Low-Profile Design |
Vibration Resistance | ⚠️ Lower (extra stress on thread joint) | ✅ Superior (Monolithic Forged Body) |
📌 Targeted Application Support
- Instrument & Gauge Connection: Ideal for connecting instruments where tubing needs to be routed immediately up, down, or sideways to avoid obstructions.
- Control Panel & Enclosure I/O: Provides a secure, space-saving connection for fluid lines passing through panel walls to internal components.
- OEM Machinery: Perfect for creating compact and robust connection points on hydraulic power units, lubrication skids, and process equipment.
- Laboratory Gas Panels: Allow for neat and logical routing of gas lines from regulators and manifolds.
❓ Frequently Asked Questions (FAQ)
Q1: What is the main advantage of using a male elbow over a straight connector and a separate elbow?
The main advantage is reliability and space-saving. A one-piece forged male elbow eliminates a threaded connection, which reduces a potential leak path by 33% and creates a much stronger, more vibration-resistant joint. Its compact design is also essential for installations in tight spaces.
Q2: Do I need to use thread sealant on the male threads?
Yes.For all tapered thread types (like NPT and BSPT), a high-quality thread sealant is required to fill the microscopic gaps in the threads and ensure a gas-tight, leak-free seal.
Q3: Are your male elbows positionable?
Our standard male elbows are not positionable (they tighten to a fixed position). However, we also offer Male Positionable Elbowswhich use a parallel thread with an O-ring seal, allowing you to align the elbow to the desired direction before final tightening. Please contact us for these options.
Q4: How does the forged body handle the stress of a 90° bend?
The forging process creates a continuous, optimized grain structure that flows through the bend. This makes the elbow inherently stronger and more resistant to pressure and fatigue than an elbow made by welding or casting, which can have weak points at the joint.
📦 Complete Size & Cross-Reference Chart
💬 Still Have Questions?
Our engineering team is ready to assist with technical selection, system design, or material recommendations.
🔒 Disclaimer
Swagelok® and Parker A-LOK® are registered trademarks of their respective holders. Stark is not affiliated with, endorsed by, or sponsored by these companies. Part numbers and brand names are provided for cross-reference and compatibility purposes only.