Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - Manual (Page 19)

ANSIFAM IOM - 5/08
17
2
Cover / Chamber Power Ends
The 3196, CV 3196, HT 3196, LF 3196, and 3796
are available with a stuffing box cover designed
for packing and BigBore™ or TaperBore™ PLUS
seal chambers for improved performance of
mechanical seals.
An optional dynamic seal is available which
uses a repeller to pump liquid out of the
stuffing box while the pump operates. A
static seal prevents leakage when the pump
is shutdown.
The NM 3196 is supplied with a fiber reinforced
vinylester backplate to accommodate a clamped
outside single seal. The backplate is also available
with an internal bypass flush. An optional bolt on
seal chamber is available for conventional back-to-
back double seals.
The 3196 is supplied with a PFA Teflon ® lined backplate
to accommodate a clamped outside single seal. Also
available for the backplate is a bolt-on metallic seal
chamber for conventional back-to-back double seals.
An optional PFA Teflon
® lined standard bore stuffing box
cover is available for conventional single clamped seat
inside or outside seals. For cartridge seals, an ETFE
Tefzel
® lined BigBore™ seal chamber is available.
Frame Adapter - The ductile iron frame adapter
has a machined rabbet fit to the seal chamber/
stuffing box cover and a precision dowel pin fit to
the bearing frame. The 3198 frame adapter has
the same features but different dimensions to
accommodate the pump’s Teflon
® lining.
Shaft - The shaft is available with or without a
sleeve. When supplied with a Teflon
® sleeve,
the 3198 shaft is knurled under the sleeve to
provide a positive drive for the sleeve.
Bearings - The inboard bearing carries only
radial loads. It is free to float axially in the
frame. The outboard bearing is shouldered and
locked to the shaft and housing to enable it to
carry radial and thrust loads. All fits are
precision machined to industry standards. The
inboard bearing is a single row deep groove
ball bearing. The outboard bearing is a double
row angular contact bearing, except for the LTX
which uses a pair of single row angular contact
ball bearings mounted back-to-back.
Power End - The oil level is viewed through a
sight glass. Optional oil cooling is provided by
a finned tube cooler. A finned tube cooler is
standard with HT 3196. Flood oil lubrication is
standard. The power end is sealed with
non-metallic labyrinth seals. No machining is
requried to convert from oil to grease or oil mist
lubrication. Regresable bearings and oil mist
lubrication are optional.