Dual Assemblies
ASHRAE 15 and IIAR 2 compliant dual valve assemblies
Two ASME-certified relief valves with a 3-way cast handwheel manifold, satisfying ASHRAE 15 and IIAR 2 requirements. The handwheel allows either valve to be replaced while the system stays pressurized and protected.
ASHRAE 15 compliantIIAR 2 compliantHandwheel changeoverNo shutdown required
Compare the Family
Dual Assemblies at a glance
| Specification | 843 Dual AssemblyView specs | 844 Dual AssemblyView specs | 845 Dual AssemblyView specs |
|---|---|---|---|
| Base Manifold | 843 Manifold | 844 Manifold | 845 Manifold |
| Configuration | Two relief valves on a three-way changeover manifold | Two relief valves on a three-way changeover manifold | Two relief valves on a three-way changeover manifold |
Why Cyrus Shank
Every dual assemblie is built the same way
ASME Certified Quality
Manufactured and documented to the standards your inspectors and codes require.
Custom Set Pressures
Factory-set to your exact spec at no additional charge on any model in the family.
100% Bench Tested
Every unit is individually tested and verified before it leaves our factory.
American-Made Since 1912
Precision-machined in Williamsport, PA by a family-owned manufacturer.
Where It's Used
Dual Assemblies for demanding refrigeration systems
Frequently Asked Questions