Specification

SUBMITTAL
SHEET
This specification is provided for reference only. Apollo reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Apollo products previously or subsequently sold.
Most current information available at apollovalves.com.
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DESCRIPTION
The lead free* Apollo 78-RV Series Combination Water Heater Isolation Valve/IAPMO Approved Thermal Expansion Relief Device solves two code
requirements while saving time, installation space and money! Ideal alternative to expansion tanks in residential plumbing systems. Made in the USA,
featuring lead free* dezincification resistant brass and bronze materials.
PERFORMANCE RATING
• Ball Valve Maximum Pressure: 400 psi
• Relief Valve Factory Set and Sealed
125 psi Maximum
• Maximum Temperature: 210°F
APPROVALS
• IAPMO IGC 128-2008
• City of Los Angeles Registered
• NSF/ANSI 372 Lead Free
• CSA B125.1 & B125.3
STANDARD MATERIAL LIST
LEVER
Steel, Plated, Plastisol
BODY
UNS C27451 Lead Free* DZR Brass
STEM BEARING
RTFE
STEM
UNS C27451 Lead Free* DZR Brass
RETAINE R
UNS C27451 Lead Free* DZR Brass
BALL
UNS C27451 Lead Free* DRZ Brass,
Chrome Plated
STEM PACKING
RTFE
SE AT
RTFE
BODY, RELIEF
UNS C89836 Lead Free* Bronze
SPRING, RELIEF
Stainless Steel
SEAT, RELIEF
Silicone Rubber
DIMENSIONS
PART
NUMBER
SIZE (IN.)
DIMENSIONS (IN.)
A B C
78RV11* 3/4" NPT 4.1 2.6 max 3.2
78RV22* 3/4" SWT 4.1 2.6 max 3.6
78RV99* 3/4" PEX 4.1 2.6 max 3.5
78RV99X2* 3/4" PEX 4.1 2.6 max 4.1
PART NUMBER MATRIX
78RV X X X X - XX
END
CONNECTION
END
CONNECTION
RELIEF
CONNECTION
PRESSURE
(PSI)
OPTIONS**
1 - NPT 1 - NPT 4 - 3/8" HOSE BARB 80 X2 - PEX A (F1960)
2 - SOLDER 2 - SOLDER 5 - 1/2" PEX 100
9 - PEX 9 - PEX 6 - 3/8" COMPRESSION 125
7 - 1/2” NPT/SOLDER
*For Push Version (78RV-P) see SS1353
**If PEX A (F1960) is required, add –X2. Example: 78RV99580X2 – PEX A(F1960) Inlet, PEX A (F1960) Outlet, PEX A (F1960) Relief Connection, 80 PSI.
*LEAD FREE: The wetted surfaces of this product shall contain no more than 0.25% lead by weighted average. Complies with Federal Public Law 111-380. ANSI 3rd party approved and listed.
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Thermal Expansion Relief Valve
78-RV Series
LEAD FREE
SS1177 © 04/19 Page 1 of 1
SOLDER NPT PEX B PEX A