A bulkhead elbow is a precision instrumentation tube fitting designed to route tubing through a panel, wall, or bulkhead while changing the flow direction by 90 degrees. Manufactured in stainless steel 304 and 304L, these fittings combine leak-tight sealing with excellent corrosion resistance — making them a dependable choice for fluid transfer, hydraulic, and instrumentation systems.
As a leading bulkhead elbow instrumentation tube fittings supplier and exporter, Kalpataru Piping Solution stocks a complete range of sizes, threads, and end connections for critical applications.
What Is a Stainless Steel 304 Bulkhead Elbow?
A bulkhead elbow performs two jobs in a single compact fitting: it anchors the tube line securely at a panel or enclosure wall using a locknut, and it turns the flow path 90° — vertically or horizontally. One end is panel-mounted with a bulkhead thread and locknut, while the tube ends seal using a two-ferrule compression mechanism.
The two-ferrule design uses a front ferrule for the primary seal and a back ferrule for tube grip, secured by a ferrule nut — delivering a vibration-resistant, gas-tight connection without welding.
Why Choose SS 304 / 304L Material?
Grade 304 (UNS S30400) is the most widely used austenitic stainless steel, offering strong corrosion resistance, good mechanical strength, and easy maintenance. Grade 304L (UNS S30403) is the low-carbon variant, preferred where welding is involved as it resists carbide precipitation. Both grades handle water, air, gas, oil, and mild chemical media across a wide temperature range.
For matching tubing, see our stainless steel 304 tubes and stainless steel 304L tubes.
SS 304 / 304L Bulkhead Elbow Specifications
| Parameter | Details |
| Grades | SS 304 (UNS S30400 / DIN 1.4301), SS 304L (UNS S30403 / DIN 1.4306, 1.4307) |
| Size Range | 1/8″ to 2″ NPS / 3mm to 50mm OD |
| Pressure Rating | Up to 6000 PSI |
| Thread Types | NPT, BSP, BSPT |
| End Connections | Compression (double ferrule), threaded, push-to-connect |
| Standards | ASTM A182 / ASME B16.11 compatible |
Types of Stainless Steel 304 & 304L Bulkhead Elbows
- UNS S30400 Bulkhead Elbow – NPT Thread
- DIN 1.4301 Bulkhead Elbow
- DIN 1.4306 / 1.4307 Bulkhead Elbow
- SS 304 / 304L Hydraulic Bulkhead Elbow
- SS 304 1/2″ Bulkhead Elbow
- 304L Ferrule Bulkhead Elbow
- UNS S30400 / UNS S30403 Bulkhead Elbow
Applications of SS 304 Bulkhead Elbows
Bulkhead elbows are used wherever tubing must pass through an enclosure while turning direction: instrumentation panels, control cabinets, tanks and vessels, hydraulic power units, process skids, and equipment enclosures across oil & gas, chemical, pharmaceutical, and food processing industries.
Related Bulkhead & Elbow Fittings
Depending on your line layout, you may also need:
- Bulkhead Union – straight-through panel connection without direction change
- Bulkhead Male Connector – tube-to-male-thread connection through a panel
- Bulkhead Female Connector – tube-to-female-thread connection through a panel
- Bulkhead Reducing Union – joins two different tube sizes at a panel
- Union Elbow – 90° tube-to-tube elbow without panel mounting
- Male Elbow – 90° tube-to-male-thread elbow
Browse the full range of SS 304 instrumentation tube fittings, SS 304L instrumentation tube fittings, or the complete stainless steel tube fittings category.
Installation Tips for a Leak-Free Connection
Always verify compatibility with your system’s fluid, pressure, and temperature before selection. Insert the tube fully to the shoulder, tighten the ferrule nut per the manufacturer’s turns-from-finger-tight guideline, and use thread sealant only on tapered pipe threads — never on compression ends. For panel mounting, ensure the panel hole diameter and thickness are within the fitting’s locknut range.
Why Buy SS 304 Bulkhead Elbows from Kalpataru Piping Solution?
We manufacture and export SS 304/304L bulkhead elbows with full material traceability, mill test certificates, and strict dimensional inspection. Combined with our stock of stainless steel 304/304L pipe fittings and SS 304/304L flanges, we can supply your complete line package from a single source.
Get a Quote: +91 22-66337137 | info@kalpatarupipingsolution.com | www.kalpatarupipingsolution.com


