ITT GOULDS PUMPS 3410, Инструкция по установке, эксплуатации и обслуживанию

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All Model 3410 mechanical seals use O-ring mounted stationary seats and a flush gland with a pilot fit in
the ID of the stuffing box as standard. All S group pumps are standard without shaft sleeves; sleeves are
optional. M, L, and XL groups are standard with shaft sleeves and sleeve nuts.
Single inside unbalanced or integrally balanced seals
The following figure illustrates a single inside unbalanced or integrally balanced (metal bellows) seal for
an S group pump. This design incorporates the standard 420SS sleeveless shaft and oversized stuffing
box bore. The stuffing box bore is used to pilot the standard gland.
1
2
3
4
5
1. Sleeveless 420SS shaft
2. Oversize stuffing box bore
3. ID pilot fit in stuffing box
4. Standard two-bolt flush gland (cast iron or bronze)
5. O-ring mounted stationary seat
Figure 28: Single inside unbalanced or integrally balanced seal for an S group pump
The following figure illustrates the same type of seal for M group pumps. Note that the shaft is protected
by sleeves and sleeve nuts as standard. All other features and details are the same.
1
2
3
4
5
1. Standard shaft sleeve
2. Oversize stuffing box bore
3. ID pilot fit in stuffing box
4. Standard two-bolt flush gland (cast iron or bronze)
5. O-ring mounted stationary seat
Figure 29: Single inside unbalanced or integrally balanced seal for an M group pump
Conventional balanced seals
Conventional balanced seals require a stepped shaft sleeve. The following figure shows an S group
pump with a stub sleeve to accomplish the seal balancing.
5.10 Mechanical seal options
Model 3410 Installation, Operation, and Maintenance Manual 47