Loading and Unloading Arms – Long Range Top Loading Arm – Model 621 LR/B
Loading and Unloading Arms – Long Range Top Loading Arm – Model 621 LR/B with a supported boom provides the greatest reach out of all of the top-loading arms in the EWFM range. It has a triangular support which is mounted onto a horizontal boom assembly. It has four swivel joints incorporated into the design which gives a wide range of operation on both vertical and horizontal planes. This allows for multiple truck or rail car compartments to be loaded without the need for them to be repositioned.

This loading arm is supplied with three Swivel Joints and one Swivel Elbow for vertical and horizontal positioning. The Swivel elbow includes handles so that the operator can easily maneuver the loading arm into the tanker. The model 621-LR/B can be manufactured in right or left-hand configuration
For more designs, please head to our loading arm page where you can find a range of Loading and Unloading Arms.
Specifications Model 621 LR/B
Available Sizes :
3? / 4? / 6?
Material :
Aluminum / Carbon Steel / Stainless Steel
Operating Pressure :
Up to 15 Bar G
Seal Material :
Nitrile / Special Viton®
Temperature :
-15°C / +65°C
Accessories :
- Flute beak end
- Microswitch to signal when the valve opened or closed
- NDT tests (X-ray)
- Stand post and support units
- Locking Device
- Overfill Level Sensor
Operating Conditions :
- Design Pressure: 10.0 Bar G
- Test Pressure: 15.0 Bar G
- Design Temperature : -15° C / +65°C
- Seal Material : VITON
- Nitrile (BUNA N)
- Special VITON (*)
- Flow Rate : 3”– 75 mc/h Max
- 4”– 125 mc/h Max
- 6”– 280 mc/h Max
Standard Dimensions
Dn | 3″ | 4″ | 6″ |
A | 2500 | 2500 | 2500 |
B | 2100 | 2100 | 2100 |
C | 1200/2000 | 1200/2000 | 1200/2000 |
D | 296 | 353 | 525 |
E | 289 | 328 | 462 |
F | 439 | 510 | 707 |
G | 174 | 201 | 278 |
H | 1000/2000 | 1000/2000 | 1000/2000 |
Weight | 160 | 215 | 300 |
Item | Description | Dwg / Mod |
1 | Style 30 Base Swivel Joint | 2174 |
2 | Boom assembly | – |
3 | Style 50 Double Swivel Joints | 2174 |
4 | Loading Valve (stay/hold-open) | 504 |
5 | Primary Arm | – |
6 | Drop tube swivel | 536 |
7 | Drop tube with “T” deflector | 2359-T |
8 | Spring Balancing Cylinder | 05182 |
9 | Pillow Block | C-4354 |
10 | Valve Remote Control | 2356 |
11 | 3/8” NPT Vacuum Breaker | 2336 |
12 | Nipper Drip Bucket | 2408 |
Options:
- Pos.7 with flute beak end (2359-BF)
- Pos.7 with flow deflector (2359-D)
- Microswitch to signal valve opened/closed
- Locking device for arm in parking position
- (*) Suitable for BIO-Products
- Overfill level sensor
- NDT test (RT-PT-MT) available on request
Notes:
- 621-LR/A Model is also available, with intermediate swivel Pos. 3 turned toward the top
- Earthing continuity along the arm, according to ATEX directive
Read More Articles:
- Long Range Top Loading Arm Unsupported Boom Model 2239-UB
- Loading and Unloading Arms – Long Range Top Loading Arm with vapour recovery system
Reference: ewfm.co.uk