DeZurik APCO CVS-EDV Gebruiksaanwijzing - Pagina 7

Blader online of download pdf Gebruiksaanwijzing voor {categorie_naam} DeZurik APCO CVS-EDV. DeZurik APCO CVS-EDV 18 pagina's. Swing check valves

Maintenance

(Continued)

Changing Counterweight or Spring Assembly to Opposite Side of Valve

Servicing the valve while the pipeline is under pressure can cause personal injury or

equipment damage. Relieve pipeline pressure before servicing the valve.

1. Relieve the pressure in the pipeline and close the valve.

2. Unscrew Lever Arm to Shaft Set Screw (B57). Remove Counterweight Lever Arm Washer

(B56). Loosen the Lever Weight Assy Set Screw (B55) and remove the counterweight

assembly, or loosen Spring Lever Arm Retention Screw (B31 or B87) and remove spring

assembly with Spring Bracket (B32) or Spring Cylinder (B83). (Note that a special spring

bracket or cylinder may be required to change lever & spring assembly to opposite side of

valve.)

3. If the valve is equipped with an Pneumatic Cylinder (B68):

a. Remove the Cushion Lever Clevis Pin Retaining Ring (B62) and Cushion Lever Clevis

Pin (B61) from the Y-Connector (B63) eye.

b. Remove the Pneumatic Cylinder assembly (B68) and Cylinder Bracket (B66) from the

Body (A1).

c. Loosen AC Assy Set Screw (B76) and remove the Cushion Lever (B88) from the Shaft

(A13).

4. Remove Long Flat Key (B78).

5. Loosen and remove Cover Nuts (A28) and Cover Nut Washers (A29). Remove Cover (A2).

6. Loosen and remove Limit Screw (A11).

7. From the extended shaft side of the valve, loosen and remove Gland Nuts (A26), remove the

Gland (A25), V-Type Packing set (A23) and Filler Ring (A21) from the Body (A1). Repeat

process on side opposite extended shaft.

8. Remove the Shaft (A13) along with Key (A8) from the Body (A1).

9. Flip and insert Shaft (A13) along with Key (A8) positioned in slot into shaft opening on opposite

side of Body (A1). Key must align with slot in Disc Arm (A9).

10. Install Filler Ring (A21) over extended Shaft (A13) flush into Body (A1) recess. Install V-Type

Packing (A23) pieces one at a time with flat face of first piece flush against Filler Ring (A21).

Follow insertion of the first 3 packing pieces with cap piece of the V-Type Packing set. Make

sure all pieces are clean and have not picked up any dirt in handling before installing it.

Lubricate I.D. of each piece. Each piece should be firmly seated with a tamping tool. Install the

Gland (A25), and Gland Nuts (A26) loosely. Repeat process on opposite side of valve.

11. Install Limit Screw (A11) in Body (A1) hole above receiving notch in Shaft (A13). Adjust V-Type

Packing Sets (A23) and tighten Gland Nuts (A26) on both sides.

12. Install the Cover (A2) to the Body (A1) with Cover Nuts (A28) and Cover Nut Washers (A29).

13. Insert Long Flat Key (B78) into slot at end of Shaft (A13).

February 2016

APCO CVS-EDV Swing Check Valves

Page 7

DeZURIK

D12042