TOP-FLO® diaphragm valves, because of their unique design, reliability, versatility, and ease of maintenance have been the ideal choice for high purity process piping applications. We combine world-class industry experience with engineering and manufacturing facilities located in the USA and Canada. Our R&D, engineering, and manufacturing groups are committed to providing high-quality valves that are unsurpassed by any of our competitors.
| Part Number | Size | TOP-FLO® Ready-To-Go | A Clamp End | B OD Tube End | C Weld Tangent | D Center To Top | Drain Angle | STP File |
|---|---|---|---|---|---|---|---|---|
| 74L3-12-1K-50-20RA-316L-A | 1/2 | Yes | 3.50 | N/A | N/A | 3.27 | 30° | |
| 74L3-12-1K-75-20RA-316L-A | 3/4 | Yes | 4.00 | N/A | N/A | 3.66 | 25° | |
| 74L3-12-1K-10-20RA-316L-A | 1 | Yes | 4.50 | N/A | N/A | 4.17 | 28° | |
| 74L3-12-1K-15-20RA-316L-A | 1-1/2 | Yes | 5.50 | N/A | N/A | 6.10 | 20° | |
| 74L3-12-1K-20-20RA-316L-A | 2 | Yes | 6.25 | N/A | N/A | 7.07 | 20° | STP |
| 74L3-12-2E-50-20RA-316L-A | 1/2 | Yes | 3.50 | N/A | N/A | 3.27 | 30° | |
| 74L3-12-2E-75-20RA-316L-A | 3/4 | Yes | 4.00 | N/A | N/A | 3.66 | 25° | |
| 74L3-12-2E-10-20RA-316L-A | 1 | Yes | 4.50 | N/A | N/A | 4.17 | 28° | |
| 74L3-12-2E-15-20RA-316L-A | 1-1/2 | Yes | 5.50 | N/A | N/A | 6.10 | 20° | |
| 74L3-12-2E-20-20RA-316L-A | 2 | Yes | 6.25 | N/A | N/A | 7.07 | 20° | |
| 78L3-12-1K-50-20RA-316L-A | 1/2 | Yes | N/A | 4.88 | 1.50 | 3.27 | 30° | |
| 78L3-12-1K-75-20RA-316L-A | 3/4 | Yes | N/A | 5.31 | 1.50 | 3.66 | 25° | |
| 78L3-12-1K-10-20RA-316L-A | 1 | Yes | N/A | 5.56 | 1.50 | 4.17 | 28° | |
| 78L3-12-1K-15-20RA-316L-A | 1-1/2 | Yes | N/A | 6.63 | 1.50 | 6.10 | 20° | |
| 78L3-12-1K-20-20RA-316L-A | 2 | Yes | N/A | 7.50 | 1.63 | 7.07 | 20° |
Steel & O’Brien competes with the major suppliers in the industry in North and South America for weir-type diaphragm valves.
The forged body has always been the optimum choice for applications within the bioprocessing and pharmaceutical industries. BIOPRO® & regular forged body diaphragm valves will be the valves of choice when high purity mechanical and electropolished surface finishes are required. 100% BPE Compliant with full material traceability.
BIOPRO® forged bodies are manufactured from ASTM A182 GR F316L material with additional controls in regards to chemical content. The sulfur content is maintained to meet and exceed the stringent requirements of BPE. All forgings are solution annealed to maintain the ferrite content to be .05% or less. This low ferrite content eliminates the concern for contaminants and migration of oxides throughout the system. Machining of the contours is performed by using state of the art cad/cam system assuring repeatability of the weir and valve cavity profiles for full drainability. Each forging contains two hash marks clearly indicating the drain angle plane for ease of installation. BIOPRO® forged bodies are in compliance with FDA guidelines as well as cGMP principles and are specifically designed for use in ultra-pure applications where sterility is critical. Steel & O'Brien provides these bodies with heat numbers etched into them for full traceability. Mill test summaries are provided with each shipment. BIOPRO® forged diaphragm valves are available in sizes ranging from 1/2” through 6” with clamp or weld end connections and surface finishes ranging through 10 RA.
Here are some key standard features to consider for your next requirement:
Steel & O'Brien offers several different types of switch packages and control monitors for position feedback to PLC.
Optional integrally mounted or externally mounted solenoid valves are also available.
Options include….
Point-to-Point:
Network Type:
Note: Not all platforms are available on all valve types. Consult the factory for availability depending on requirements.