Main product image of 250-1-30, Relief Valve 1" NPT, 30 psi (2.1 kg/cm2)

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250-1-30, Relief Valve 1" NPT, 30 psi (2.1 kg/cm2)

Name: 250-1-30, Relief Valve 1" NPT, 30 psi (2.1 kg/cm2)
Brand: McDonnell & Miller
SKU: 181925
Price: 269.18 USD
Availability: OutOfStock

Brand:

McDonnell & Miller

SKU:

181925

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250-1-30, Relief Valve 1" NPT, 30 psi (2.1 kg/cm2)

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181925 has been discontinued

Discontinued July 16, 2026

This product was discontinued by the manufacturer.

MANUALS (1)

Product Overview

This item replaces: 250-1-30

Product Highlights

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30 psi

Bronze

250°F Max

Threaded Connection

Description

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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)

Specs

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Pressure Set Point:	30 psi
ASME Rating (BTU/HR):	1170000
Capacity:	1170000 BTU/hr
Size:	1"
Material:	Bronze
Application:	Heating
Temperature Range (F):	250°F Max
Connection Type:	Threaded
ASME:	Yes