User Guide

SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety related

instructions. When used, the safety alert symbol means ATTENTION! BECOME ALERT!

YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY

RESULT IN A SAFETY HAZARD.

CAUTION: All work must be performed by qualified personnel trained in the

proper application, installation, and maintenance of systems in accordance

with all applicable codes and ordinances.

CAUTION: Over-tightening and breakage can occur with the use of Teflon

pipe joint compounds. Teflon

provides lubricity so that care must be

exercised not to over-tighten joints. Failure to follow these instructions

could result in property damage and /or personal injury.

Function

Check valve makes it easy to change components attached to a

hydronic system under pressure.

Technical Characteristics

Connection: 1/2” NPTF Male x 1/2” NPTF Female

Material: Body Brass

Seals

peroxide-cured EPDM

Spring Stainless steel

Maximum Working Pressure: 150 psi (10 bar)

Maximum Working Temperature: 240°F (115°C)

CALEFFI

Check Valve 561 Series

38494.03

ww w.caleffi.com

This item is designed for use in closed hydronic systems. Do not use in plumbing applications.

This item does not meet the low-lead plumbing standards of U.S. and Canada.

WARNING: This product can expose you to chemicals including lead, which is

known to the State of California to cause cancer and birth defects or other

reproductive harm. For more information go to www.P65Warnings.ca.gov.

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CALEFFI 561 Series 38494.03 www.caleffi.com Check Valve © Copyright 2018 Caleffi Function Check valve makes it easy to change components attached to a hydronic system under pressure. Technical Characteristics Connection: 1/2” NPTF Male x 1/2” NPTF Female Material: Body Seals Spring Maximum Working Pressure: Maximum Working Temperature: Brass peroxide-cured EPDM Stainless steel 150 psi (10 bar) 240°F (115°C) This item is designed for use in closed hydronic systems.
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WARNING: System fluids are under pressure or temperature can be hazardous. Be sure the pressure has been reduced to zero and the system temperature is below 100°F (38°C). Failure to follow these instructions could result in property damage and/or personal injury. Installation The male threaded of check valve are installed into the system while the system is drained and the temperature is below 100°F (38°C). The desired component is threaded into the female threads of the check valve.