The Caleffi 128751A 000 is a Union Y-Strainer with 3/4" Male NPT connections. It uses low-lead brass suitable for potable water service.
Best for protecting pumps, control valves and heat exchangers from scale and construction debris.
Specifications sourced from Caleffi North America technical literature. Last reviewed July 2026.
Key Features
Removable Stainless Steel Screen
A stainless mesh element traps scale, weld slag and debris before it reaches pumps, valves and heat exchangers, and lifts out for cleaning without removing the body.
Pressure/Temperature Test Ports
Integral P/T ports allow differential pressure and temperature to be read directly at the strainer for commissioning and troubleshooting.
Union Connections
Union tailpieces allow the strainer to be removed for service without cutting pipe or disturbing adjacent fittings.
Low-Lead Brass Construction
Wetted surfaces carry a weighted average lead content below 0.25%, meeting Section 1417 of the Safe Drinking Water Act for potable water service.
Technical Specifications
| Product Type | Y-Strainer |
| Connection Size | 3/4" |
| Connection Type | Male NPT |
| Series | Union Y-Strainer |
| P/T Test Ports | Included |
| Maximum operating pressure | 400 psi |
| Medium temperature range | 32 - 212 deg F |
| Maximum glycol % | 50 % |
| Lead Content | Low-lead brass, below 0.25% weighted average |
| Shipping Weight | 1.5 lb |
Documentation
Related Products
- Caleffi 128752A 000 : Union Y-Strainer 3/4" PEX Expansion + P/T Port
- Caleffi 128754A 000 : Union Y-Strainer 3/4" PEX Crimp + P/T Port
- Caleffi 128756A 000 : Union Y-Strainer 3/4" Press + P/T Port
- Caleffi 128759A 000 : Union Y-Strainer 3/4" Press/Sweat + P/T Port
Frequently Asked Questions
What does Caleffi 128751A 000 do?
It is a y-strainer. A removable stainless steel screen captures scale, weld slag and construction debris before it reaches pumps, control valves and heat exchangers, where that debris would cause wear or blockage.
Can the screen in Caleffi 128751A 000 be cleaned?
Yes. The screen is removable for cleaning and reuse. Isolate the strainer before opening the body to service the screen.
What connection does Caleffi 128751A 000 use?
It is supplied with 3/4" Male NPT connections. Other sizes and connection styles in the Union Y-Strainer range are listed under Related Products.
What are the pressure and temperature limits of Caleffi 128751A 000?
Maximum operating pressure is 400 psi.
Is Caleffi 128751A 000 approved for potable water?
It uses low-lead brass with a weighted average lead content below 0.25% of wetted surfaces, meeting Section 1417 of the Safe Drinking Water Act. Confirm acceptance with the authority having jurisdiction for the specific application.
- Product Type:
- Y-Strainer
- Series:
- Union Y-Strainer
- Product Family:
- Y-strainers
- Connection Type:
- Male NPT
- Connection Size:
- 3/4 inch
- P/T Test Ports:
- Yes
- Lead Content:
- Low-Lead Brass
- Max Operating Pressure:
- 400 psi