Submittal Sheet

1.11 EXTRA MATERIALS:
A. Provide one (1) set of mechanical seals for each model type of primary pump
scheduled.
2.00 PART 2- PRODUCTS
A. The specifying engineer reserves the right to specify a primary supplier / lead
spec manufacturer on all supplied schedule and specification documents.
These primary suppliers have lead their respective industry in research and
development and their products have had proven track records in the field.
These primary suppliers, in the opinion of this engineering firm, produce a
superior product to the alternately listed manufacturers. The contractor may
choose to supply equivalent equipment as manufactured by the alternately
specified manufacturer. This alternately specified equipment shall be supplied
on a deduct alternate basis and based on the approval of the supplied alternate
manufacturer’s submittals.
The use of a primary supplier and deduct alternates protects the specifying
engineer’s design concept, but allows for a check-and-balance system to
protect the post-commissioning owner.
2.04 3-PIECE INLINE PUMPS – PERMANENTLY LUBRICATED:
A. Manufacturer:
1. Contractor shall furnish and install new 3-piece inline permanently lubricated
pumps for chilled water and hot water heating systems as indicated on the
drawings. Pumps shall be Series e-60 as manufactured by Bell & Gossett
under base bid. Equivalent units as manufactured by others may be submitted
as deduct alternates. Pumps shall meet types, sizes, capacities, and
characteristics as scheduled on the Equipment Schedule drawings.
B. 3-piece Inline Pumps – Permanently Lubricated:
1. The pumps shall be of a horizontal, permanently lubricated type, specifically
designed for quiet operation. Suitable for 225° F operation at 175 PSIG working
pressure. The pump shall be single stage, vertical split case design, in cast iron
bronze fitted (or all bronze) construction. The pump internals shall be capable
of being services without disturbing piping connections.
2. The pumps shall be composed of three separable components a motor, bearing
assembly, and pump end (wet end). The motor shaft shall be connected to the
pump shaft via a replaceable flexible coupler.
3. The pumps shall have a solid SAE1144 steel shaft supported by two sealed ball
bearings. A non-ferrous shaft sleeve shall be employed to completely cover the
wetted area under the seal.
4. Pump shall be equipped with an internally-flushed mechanical seal assembly.
Seal assembly shall be the unitized type with stainless steel drive tabs, EPR
bellows and seat gasket, stainless steel spring, and be of a carbon silicon-