Parker
Parker R46E257M 7/8 in sweat solenoid trap
A refrigerant solenoid valve with a 7/8 in sweat connection, 25/32 in port, 450 psi safe working pressure, and CE, CSA, UL listings
- TypeDrain Components
- Two-way normally closed design prevents backflow
- Sweat 7/8 in ODF connection simplifies copper piping
- 450 psi safe working pressure handles high-pressure systems
- Brass body with synthetic coating resists corrosion
- CE, CSA and UL listed for code compliance
Refrigerant solenoid valve for 7/8 in sweat
This Parker R46E257M is a two-way normally closed refrigerant solenoid valve designed for HVAC and refrigeration systems. It features a sweat ODF connection sized at 7/8 in and a port diameter of 25/32 in. The brass body with synthetic coated metal construction suits professional installers and maintenance technicians.
Rated for 450 psi safe working pressure
The valve operates within a safe working pressure of 450 psi and carries CE, CSA and UL certifications. Pressure drop characteristics are specified at 49.9 and 2.53 degrees F as well as 50.6 and 3.97 degrees F. These limits define the practical envelope for system design and commissioning.
Replaces legacy pilot-operated
Upgrading from older pilot-operated or manual shut-off valves adds reliable electrically actuated flow control with normally closed fail-safe behaviour. The jump is worth it when tighter refrigerant isolation, faster response or automated sequence control are required for system efficiency and safety compliance.
Highlights
- Two-way normally closed design prevents backflow
- Sweat 7/8 in ODF connection simplifies copper piping
- 450 psi safe working pressure handles high-pressure systems
- Brass body with synthetic coating resists corrosion
- CE, CSA and UL listed for code compliance
Specifications
| Type | Drain Components |
|---|---|
| Brand | Parker |
| Model | R46E257M |
Questions about this item
Should I choose the 7/8 in sweat version or a different connection size?
The 7/8 in sweat ODF connection matches copper tube of that outside diameter, so select it when your piping uses 7/8 in copper.
What does the 450 psi safe working pressure mean once the valve is installed?
It means the valve body and seals are rated to withstand 450 psi internal pressure during normal operation.
How does the sweat ODF interface limit what I can do?
The sweat ODF connection requires brazing to copper tube, so it cannot be disassembled or adapted to flare or threaded fittings without cutting the pipe.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Taylor 70204 Acrylic Coated Polyester Gray Hot Shot BoatGuard Boat Cover
- Transparent
BoatBuckle F12071 Kwik-Lok Gunwale Tie-Down Stainless Steel
- Transparent



