Cracking pressure0.5 psi
Max. water pressure400 psi
Max. temp.353°F
Overall height2 1/8"
Connection typeFNPT
Max. steam pressure125 psi
Series61 Series Check Valves
Size1 1/4"
Suitable for central heating waterYes
ColorBronze
Mounting positionHorizontal/Vertical
Seal materialEPDM
Seat materialRPTFE
Spring materialStainless Steel
Connection size - side 11 1/4"
Connection size - side 21 1/4"
Connection type - side 2NPT
Flow coefficient (cv)44
For mediaSteam
Silent checkStandard
Valve body styleInline
Valve ways2-Way
Media temp. range33°F to 406°F
Operating temperature - maximum406°F
Operating temperature - minimum33°F
Includes counterweightNo Counterweight
Flow rate44 GPM
Max. pressure (cwp)400 psi
3-a complianceNot Rated
Ball materialRPTFE
Body materialBronze
Check mechanismBall
Connection gender - side 1Female
Connection gender - side 2Female
Connection type - side 1NPT
Mounting orientationHorizontal, Vertical
Vacuum service ratingNot Rated
Valve series61
Media temperature range33°F to 406°F
MaterialBronze
End connectionsFNPT x FNPT
Valve size1-1/4
Unspsc code40141622
Maximum temperature (c)176.60
Maximum temperature (f) ( - 0 decimals)406.00
StandardsCRN: 0C11218.5C
Maximum working pressure400 psi
End connectionFNPT x FNPT
Pipe size1-1/4
Valve typeInline
Temperature rating176.60
Pressure rating400psi
Actuator typeSpring
Dimensions2.37 in H
Domestic/importDomestic
End styleFNPT
Inlet to outlet length4.19 in
Low lead complianceNo
MediaLiquid/Steam
Nominal size1-1/4 in
Trim material316 Stainless Steel Spring/Brass Stem
ManufacturerApollo Conbraco Industries