DeZurik APCO CSV-1600A Manuel utilisateur

DeZURIK, Inc. Sartell, Minnesota USA | Phone: 320-259-2000 | DeZURIK.com | [email protected]

APCO CSV-1600A

SURGE CHECK VALVES

Instruction D12050

March 2023

DeZURIK

Instructions

These instructions are for use by personnel who are responsible for the installation, operation and

maintenance of DeZURIK valves, actuators or accessories.

Safety Messages

All safety messages in the instructions are identified by a general warning sign and the signal word CAUTION,

WARNING or DANGER. These messages indicate procedures to avoid injury or death.

Safety label(s) on the product indicate hazards that can cause injury or death. If a safety label becomes difficult

to see or read, or if a label has been removed, please contact DeZURIK for replacement label(s).

Personnel involved in the installation or maintenance of valves should be constantly alert to potential

emission of pipeline material and take appropriate safety precautions. Always wear suitable protection

when dealing with hazardous pipeline materials. Handle valves which have been removed from service

with suitable protection for any potential pipeline material in the valve.

Inspection

Your DeZURIK product has been packaged to provide protection during shipment; however, items can be

damaged in transport. Carefully inspect the unit for damage upon arrival and file a claim with the carrier if

damage is apparent.

Parts

Replaceable wear parts are listed on the assembly drawing. These parts can be stocked to minimize

downtime. Order parts from your local DeZURIK sales representative or directly from DeZURIK. When ordering

parts please provide the following information:

If the valve has a data plate: please include the 7-digit part number with either 4-digit revision number

(example: 9999999R000) or 8-digit serial number (example: S1900001) whichever is applicable. The

data plate will be attached to the valve assembly. Also, include the part name, the assembly drawing

number, the balloon number and the quantity stated on the assembly drawing.

If there isn't any data plate visible on the valve: please include valve model number, part name, and

item number from the assembly drawing. You may contact your local DeZURIK Representative to help

you identify your valve.

DeZURIK Service

DeZURIK service personnel are available to maintain and repair all DeZURIK products. DeZURIK also offers

customized training programs and consultation services. For more information, contact your local DeZURIK

sales representative or visit our website at DeZURIK.com.

DeZURIK 
APCO CSV-1600A Surge Check Valves 
March 2023 Page 3 D12050 
 
Table of Contents 
 
Description ........................................................................................................................................................4 
Handling and Storage........................................................................................................................................4 
Installation.........................................................................................................................................................4 
Fusion Bonded Epoxy Coated Valves................................................................................................................4 
Maintenance......................................................................................................................................................5 
Disassembly Procedure.................................................................................................................................5 
Assembly Procedure......................................................................................................................................5 
Flow Adjustment ............................................................................................................................................6 
Operation ..........................................................................................................................................................7 
Drawings ...........................................................................................................................................................8 
Figure 1: CSV-1600A Surge Check Valve......................................................................................................8 
Figure 2: CSV-1600A Surge Check Valve (Exploded View)...........................................................................9 
Troubleshooting...............................................................................................................................................10 
 

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 4 D12050

Description

APCO CSV-1600A Surge Check Valve is designed for installation to the inlet of the existing Air/Vacuum Valve

on the line. It consists of a body, seat and plug. After air passes through and water rushes into the surge

check, the plug starts to close, reducing the rate of flow of water into the air valve by means of throttling orifices

in the disc to prevent water hammer in the air valves. If necessary, flow can be controlled in the field by

installing NPT plugs into the orifices of the valve plug.

Handling and Storage

Lifting the valve improperly may damage it. Do not fasten lifting devices through the seat opening in the body.

Lift the valve with slings, chains or cables fastened around the valve body, or fastened to bolts or rods through

bolt holes in the flanges.

If installation will be delayed, refer to Form 1454 –Recommended Long & Short-Term Storage

Procedures.

Installation

The Surge Check Valve should always be installed in a vertical position. An isolation valve between this unit

and the transmission (pipeline) system is recommended.

•Before installation, remove foreign material such as weld spatter, oil, grease, and dirt from the pipeline.

•Prepare pipe ends and install valves in accordance with the pipe manufacture’s instructions for the joint

used.

Do not deflect the pipe-valve joint. Minimize bending stresses in the valve end

connection with pipe loading.

•Tighten the flange bolts or studs in a crisscross pattern and minimum of four stages.

Fusion Bonded Epoxy Coated Valves

Valves with fusion bonded epoxy coated exterior paint require flat washers to be

installed under the flange nuts when installing the valve to the pipeline flange to

prevent the coating from cracking or chipping.

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 5 D12050

Maintenance

The APCO Surge Check Valve is automatic in operation and requires very little maintenance. It should always

be installed in a vertical position.

A semi-annual visual inspection for leakage is recommended. A malfunction of the Surge Check Valve can be

identified by a substantial amount of spillage through the exhaust port during pump start-up. Should a

malfunction occur, the following steps should be taken to repair the valve:

Disassembly Procedure

See Figures 1 & 2 for part identification.

Servicing the Surge Check Valve while the pipeline is under pressure can cause

personal injury or equipment damage. Relieve pipeline pressure or shut off isolation

valve before servicing the Surge Check Valve.

1. Relieve pipeline pressure or shut off isolation valve before servicing the Surge Check Valve.

2. Remove the Air/Vacuum Valve from the Surge Check Valve.

3. Loosen seat retaining screws (S06).

4. Remove seat (S02). In some cases, it may be necessary to use penetrating oil or rust solvent to loosen

the rust that may have formed between the body (S01) and seat (S02). Also, it may be helpful to rotate

the seat in the body to break loose the seat retaining ball (S07). Check if the bore through the center of

the seat (S02) is worn.

5. Lift and remove plug (S03). Inspect plug assembly (S03) for any bent or worn features.

6. Remove bushing retaining ring (S11) and bushing (S05).

7. Clean all surfaces before re-assembly. Replace all defective parts.

Assembly Procedure

1. Install the parts inside the body (S01) in the following order:

a. Bushing (S05) and bushing retaining ring (S11) into the center bore of the body (S01).

b. Plug (S03) with the concave side facing upward.

c. Seat (S02) and seat retaining ball (S07). Tighten seat retaining screw (S06) when flush with flange

face.

Note: When assembled, make sure that both ends of plug stem are completely engaged in their

respective guides in both open and closed positions. Plug should freely move when

activated.

2. Attach the Air/Vacuum Valve to the Surge Check Valve.

3. If valve was removed from pipeline, place valve in pipeline, and open isolation valve on inlet to Air

Valve. Valve is now back in service.

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 6 D12050

Flow Adjustment

Flow allowed through the closed valve can be adjusted by installing NPT plugs into orifices on the plug (S03).

ASME Class 125/150 valves sized 3-12” (80-300mm):

•Orifices will require tapping prior to installing NPT plugs.

•See Table 1: Orifice NPT Plug Sizes for appropriate tap size. Orifices are proper size to receive NPT

tap.

•Tap orifice to appropriate size.

•Install NPT plugs in orifices until desirable flow conditions are met.

ASME Class 125/150 valves sized 14-24” (350-600mm) and ASME Class 250/300 valves sized 3-24” (80-

600mm):

•Supplied from the factory with threaded orifices.

•See Table 1: Orifice NPT Plug Sizes for appropriate NPT plug size.

•Install NPT plugs in orifices until desirable flow conditions are met.

Valve Size

(in/mm)

Orifice NPT Plug Size

ASME Class 125/150

ASME Class 250/300

* 1/8” NPT

1/8” NPT

100

* 1/8” NPT

1/8” NPT

150

* 1/8” NPT

1/8” NPT

200

* 1/8” NPT

1/8” NPT

250

* 1/8” NPT

1/8” NPT

300

* 1/4” NPT

1/4” NPT

350

1/4” NPT

400

1/4” NPT

450

3/8” NPT

*ASME Class 125/150 sizes 3-12” (80-300mm) valves will need to

be tapped prior to NPT plug installation.

Table 1: Orifice NPT Plug Sizes

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 7 D12050

Operation

The Surge Check Valve is a normally open valve that air passes through unrestricted. When water rushes into

the Surge Check unit, the disc begins to close against the seat and reduces the rate of flow of water into the air

valve by means of throttling holes in the disc. This ensures normal gentle closing of the Air/Vacuum Valve

regardless of the initial velocity flows involved and minimizes pressure surges when the valve closes.

As soon as the Air/Vacuum Valve is closed, the pressure on both sides of the Surge Check Valve disc

equalizes and the disc automatically returns to its open position. This means the Air/Vacuum Valve does not

need an incipient vacuum to open, but can open at any time the water level drops and line pressure

approaches atmospheric. This will allow immediate full re-entry flow of air into the pipeline before a vacuum

can form.

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 8 D12050

Drawings

Item No.

Description

S01

BODY

S02

SEAT

S03

PLUG

S05

BUSHING

S06

SEAT RETAINING SCREW

S07

SEAT RETAINING BALL

S11

BUSHING RETAINING RING (NOTE 1)

Note 1: When corrosion resistant body materials are

used, a threaded retainer is used. Standard retainer is

a retaining ring as shown in the drawing.

Figure 1: CSV-1600A Surge Check Valve

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 9 D12050

Drawings (Continued)

Figure 2: CSV-1600A Surge Check Valve (Exploded View)

DeZURIK

APCO CSV-1600A Surge Check Valves

March 2023 Page 10 D12050

Troubleshooting

Condition

Possible Cause

Corrective Action

Valve will not close.

Plug stem may be worn and may

have come out of the guide.

Replace Plug.

Valve will not open.

Improper installation.

Flow arrow on valve body should

be pointing in direction of flow.

Valve leaks at flange joint.

Loose flange bolting.

Tighten flange bolting.

Blown flange gasket.

Replace flange gasket.

Misalignment or damage to field

piping and supports.

Adjust misalignment or repair

piping or supports.

Damaged flange face/s or

improper flange connections.

Repair flange, replace valve

body or adjust flange

connections.

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