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category:
Relief Valves
manufacturer:
McDonnell & Miller
mpn:
181225
subcategory:
Pressure Relief Valves
type:
250 Series Relief Valves
weight:
1.3
Product Overview
For tanks and hydronic heating systems
Specifications- Protects against over pressure
- Minimizes hammering with flash steam
- Low differential pressure - 3 psi (.21 kg/cm2) between opening and closing
- Meets ASME Pressure Vessel and Boiler Code, Section IV
- Sizes and material: 3/4" - 1" NPT - bronze body and seat 2" NPT - cast iron body, brass seat
- EPDM rubber diaphragm and seat disc
- Maximum temperature 250 Deg. F (121 Deg. C)
- Maximum operating pressure range 30 - 125 psig (2.1 - 8.8 kg/cm2)
Additional Information
Pressure Set Point30 psi
Size3/4"
ASME Rating (BTU/HR)790000
Capacity790000 BTU/hr
MaterialBronze
ApplicationHeating
Temperature Range (F)250°F Max
Connection TypeThreaded
ASMEYes