Flowserve E325 Bedienungsanleitung PDF herunterladen

McCANNA/MARPAC Valves

MMAIM2003

Tri-Pac Three-Piece In-line Maintainable Ball Valves

Models E325/E525

Installation, Operation and Maintenance Instructions

1. Installation

These valves may be installed in any position

utilizing normal pipe fitting practices.

Socket-Weld End Valves

To keep from destroying soft parts of the

valve, loosen two bolts and remove six bolts

as shown in Figures 1A, 1B, and 1C and

swing out the body as for servicing. Take care

that the end seals are not damaged. Note that,

for the FIRE-GARD

valves with socket weld

ends, extra end seals are included with the

valve. Seals are to be replaced during the

reassembly after welding. Prior to removing

the bolts to allow the body to swing out, the

valve may be tack welded in the line to

facilitate line-up.

The base material of valve covered by this

procedure conforms to the following:

• Carbon Steel - ASTM A105 (Forged)

• 316 Stainless Steel - ASTM A182

• GRF316 (Forged)

Before welding, push pipe snugly into end

adapters and then back off approximately

". The socket and at least one inch of the

pipe (at the joint) must be free of all foreign

material which might prove detrimental to

the weld.

Use the smallest electrode and minimum

amperage consistent with efficient welding to

minimize warpage. Tacks should be ground

out before completing the root pass in that

area. Weld stringer beads with no weaving

and stagger all starts and stops.

Carbon steel ends should be allowed to cool

slowly. The valve ends may be covered with a

welding blanket to promote slow cooling.

2. Stem Packing

Adjustment

If leakage is evident in stem packing area,

tighten the adjusting nut (7)

8 turn. If leak

still persists, repeat above.

Replacement of the stem seals (5) is indicated

if leak is still apparent.

3. Seal Replacement

a WARNING: Begin with the valve partially

open in a depressurized line. Valve should

be cycled once to ensure there is no media

trapped behind the ball.

A. Turn ball (3) to open position and remove

handle nut (9), handle (8), adjusting nut (7),

travel stop (13), (part of the handle on sizes

4" –

4") and gland ring (6).

B. Loosen two bolts (14) (one per side in line

with each other) and remove remaining six

bolts (Figures 1A and 1B). The center body

section of the valve will swing out (Figure 1C)

for access to the ball (3), stem (4), seats (10)

and body seals (11).

NOTE: Valve must be in open position in

order to swing out body section.

C. Remove body seals (11) by using a sharp

instrument such as pocket knife. Care should

be taken to avoid damage to the surfaces of

the seal groove.

D. To take out one seat (10) and the ball (3),

rotate the stem (4) so ball (3) is in fully

closed position and insert wooden dowel (not

metal) in port and tap gently on ball (3)

thereby forcing it out of body (1).

NOTE: Extreme caution should be taken to

avoid damage to the ball (3).

E. Take out other seat (10).

NOT

SHOWN

Part No. Description

1 Body

2 End Adapters

3 Ball

4 Stem

5 Stem Seal Set

6 Gland Ring

7 Adjusting Nut

8 Handle

9 Handle Nut

10 Seat

11 Body Seals

12 Stop Pins (not shown)

13 Travel Stop

14 Bolts

15 Grounding Washer

1 2

Models E325/E525 1
4. Reassembly 2

Inhaltsverzeichnis

Seite 1 - Models E325/E525

McCANNA/MARPAC ValvesMMAIM2003Tri-Pac Three-Piece In-line Maintainable Ball ValvesModels E325/E525Installation, Operation and Maintenance Instructions

Seite 2 - 4. Reassembly

F. Push the stem (4) down thru the body (1)and out the open end of the body (1). Removethe upper and lower stem seals (5) and thegrounding washer (15)

Verwandte Modelle: E525

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Flowserve E325 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Hardware Flowserve E325 herunter. Flowserve E325 User Manual Benutzerhandbuch

Inhaltsverzeichnis

Verwandte Modelle: E525

Kommentare zu diesen Handbüchern

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