Flowserve VRA Series Durametallic - Manual (Page 3)

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2 Installation
2.1 Install the two seat gasket O-rings furnished for the stationary face, one ring per side.
2.2 Install the stationary face into the gland ring with the sealing face first so it will
protrude out the back of the gland ring.
2.3 Install the gland and stationary face over the shaft and ease it into position. Bolt the
gland ring to the face of the stuffing box or seal housing by drawing the nuts down
evenly. The gland ring gasket is one of the seal gasket O-rings, therefore, there is no
concern for additional sealing elements in the area.
2.4 Install the sleeve gasket O-ring, into the O-ring groove of the seal drive assembly.
2.5 Install the rotating face gasket O-ring, on the first step and against the second step
wall of the seal drive assembly.
2.6 Line up the slots on the rotating face OD with the drive pins in the seal drive
assembly and slide the rotating face into place on the seal drive assembly extension
surface.
2.7 Wipe the sealing faces of the rotating and stationary face clean.
Remember: Do not oil the sealing faces.
2.8 All outside VRA seal designs require that the rotating portion of the seal, seal drive
with seal ring, be slid on the shaft as an entire unit to prevent damage to the rotating
face. Slide the entire unit on the shaft until the stationary and rotating faces touch.
Remember: Do not touch the sealing face of the rotating face.
2.9 Set the seal to the distance given on the assembly drawing, furnished with the seal.
This dimension is shown on the assembly drawing as the distance from the face
of the equipment to the back of the seal drive. Make sure the spring gap is evenly
spaced around the seal and lock the seal drive to the shaft with the seal drive set
screws.
3 Operation Recommendations
3.1 The pressure acting on the seal must not exceed the pressure velocity rating of the
seal design and materials of construction.
3.2 If the seal runs hot, check for proper seal setting and seal housing dimensions to
insure that the seal is not over-compressed. Shut down the equipment immediately
if the seal gets hot.
3.3 When the gas being sealed is other than air, never start up the equipment without
properly venting.
3.4 This seal can be used if a full vacuum pressure condition exists.
For special problems encountered during installation, contact your nearest Flowserve Sales
and Service Representative or Authorized Distributor.