Blind Pipe Flange is used whenever a line must
be capped of at a flange. It is good practice to install blind pipe flange at
the end od header or at location where future tie-ins are anticipated.
Blind pipe flanges are also used extensively for manways, in
which case a davit is recommended for ease in handling the unbolted manway
cover.
Blind pipe flange is specified by ANSI B16.47.
Product Features:
Blind
Flanges are well suited
for high temperature and pressure applications. manufactured
without a bore, Blind Flanges are used to blank off the ends of pipes, valves
and pressure vessel openings.
Slip on Flange is essentially a ring that is
placed over the pipe end, with the flange face extending from the end of the
pipe by enough distance to apply a weld bead on the inside diameter.
The OD of slip on flange is also welded on the back side of the
flange. Slip on flanges have a lower material cost than weld neck flange and
are more easily aligned.
Slip on flange may also be used a lap joint flanges if Type B or
Type C stub ends are used.
Product Features:
Slip
On Flanges are popular
low-cost flange type for low pressure applications. The flange simply
slides onto the pipe where two fillet
welds, one on the outside and the other on the inside, seal and fasten the
connection.
RFWN Flange (Raise Face Weldneck Flange) are
easy to recognize. They include a long tapered hub that gradually meets the
wall thickness from the pipe or fitting.
The long tapered hub of RFWN Flange provides an important
reinforcement for use in several applications involving high pressure, sub-zero
and / or elevated temperatures. In conditions of repeated bending, caused by
line expansion or other variable forces, the smooth transition from flange
thickness to pipe or fitting wall thickness is extremely beneficial.
RFWN Flange is bored to match the inside diameter of the
mating pipe or fitting so there will be no restriction of product flow. This
prevents turbulence at the joint and reduces erosion. They also provide
excellent stress distribution through the tapered hub and are easily
radiographed for flaw detection. Weldneck flange is welded to a pipe or
fitting with a single full penetration, V weld (Buttweld).
Product Features:
Weld
Neck Flanges include
a long tapered hub that aid in reinforcement and provide
temperature / pressure resistance. Bored to match the inside diameter of
the mating pipe or fitting, these flanges are directly welded to the end of the
pipe.
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