Alfa Laval 45BYMP Y-Body Ball Check Valve
Central States Industrial (CSI) offers the original sanitary Y-body check valve—Alfa Laval's 45BYMP ball check valve. This valve provides backflow prevention for stainless steel process lines. Its simple, robust design delivers years of reliable service.
With a sanitary design and low pressure drop, the 45BYMP has been a trusted option for years. The valve meets 3-A sanitary standards and can be mounted either vertically or horizontally.
45BYMP is authorized to carry the 3-A symbol.
APPLICATIONS
The 45BYMP ball check valve operates at a wide range of pressures and flow rates. Because the sealing check ball moves completely out of the process flow when open, the valve offer low pressure reduction and handles viscous liquids or liquids containing solid particles easily. Alfa Laval's 45BYMP is authorized to carry the 3-A symbol.
WORKING PRINCIPLE
When liquid under normal pressure enters the inlet of the 45BYMP check valve, an elastomeric ball is pushed upward into the "Y" branch (lower pressure area) of the valve. When the liquid flow stops, the pressure within the valve equalizes, and the ball returns from the "Y" branch of the valve and rests itself against the smaller diameter of the valve near its inlet. Should a reverse flow situation occur, the opposing pressure of the fluid will seat the ball firmly against the inlet of the valve, preventing reverse flow. The valve operates in both a vertical or horizontal orientation.
STANDARD DESIGN
The valve consists of a single-piece, stainless steel body with an elastomeric ball (see materials table for options). The "Y" branch of the valve maintains a Tri-Clamp® connection along with an associated Tri-Clamp, end-cap, and NBR gasket. The valve is polished internally and externally to meet or exceed 3-A sanitary standards.
MATERIALS
| Product Wetted Steel Parts | 316L |
| Other Steel Parts | 304 |
| Ball | Buna, EPDM, SFY, Nylon (max 140°F) |
| Gasket | NBR (standard) |
| Finish | 32 Ra (standard) |
TECHNICAL DATA
| Size | 1 1/2 – 3 inch |
| Connections | Tri-Clamp, weld |
| Max Product Pressure | 200 psi |
| Min Product Pressure | 1 psi |
| Temperature Range | Based on elastomer choice |
DIMENSIONS
| Tube OD (in) |
A (in) |
Approx. Weight (lb) |
|---|---|---|
| 1 1/2 | 8 19/32 | 3.00 |
| 2 | 10 3/32 | 3.25 |
| 2 1/2 | 11½ | 7.69 |
| 3 | 12⅜ | 10.14 |
45BY-Size-02-Ball, Replacement Balls
| Tube OD (in) |
Ball (in) |
|---|---|
| 1 1/2 | 1 5/8 |
| 2 | 2 1/8 |
| 2 1/2 | 3 1/2 |
| 3 | 4 1/8 |
Pressure Drop Curves
All curves are tested pressure drop curves, not certified, and should be applied for guideline purposes only. Performance curves are based on tests using 68°F water.
Product Resources
See all resources by Alfa LavalSpare Parts
- 45BYMP Y-Body Ball Check Spare Parts
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Part 1.5 2 2.5 3 Diagram Key Buna Ball 621934 623203 624209 625150 1 EPDM Ball 620374 620376 620996 620995 1 SFY Ball 620766 620262 620377 1 Nylon Ball 620995 620998 620999 621000 1 Air Check Valve, EPDM 830045 830048 830099 830100 2 Air Check Valve, SFY 830138 830027
830150 N/A 2 Clamp 212196 212197 212199 270267 3 Gasket, Buna 298453 298454 298456 298577 4 Gasket, EPDM 290043 290048 290018 290147 4 Gasket, SFY 290030 290040 290053 290060 4 Clamp 212195 212195 212195 212195 6 Back Up Gasket, Buna 220191 220191 220191 220191 7 Back Up Gasket, EPDM 220275 220275 220275 220275 7 Back Up Gasket, SFY
220284 220284 220284 220284 7 "A" Adapter 763278 763278 763278 763278 8 "B" Adapter 213384 213384 213384 213384 8 "C" Adapter (3/8") 210339 210339 210339 210339 8 "C1" Adapter (1/2") 214206 214206 214206 214206 8 "C2" Adapter (3/4") 211677 211677 211677 211677 8
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