Manual

ManualsBrandsCashco ManualsAccessories for waterSCV-30

INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)

SECTION I

I. DESCRIPTION AND SCOPE

Model SCV-30 is a pneumatically actuated, globe-style

con trol valve for throttling sanitary or biotechnological

ap pli ca tions. The globe body comes in two varia-

tions; straight-globe pattern and angle-globe pattern,

sizes 3/4" - 1-1/2" (DN20 - DN40) with standard Tri-

Clover® sanitary end connections. The valve body

assembly incorporates a formed internal composition

diaphragm that is bonded to a characterized metal

plug. The wetted metallic body portion is of forged

316L SST, mechanically and electro-polished to a 10

micro-inch R

ﬁ nish.

A ﬁ eld reversible actuator, Model C27, is mounted

to the body.

Failure position is determined by actuator, for:

"D" = Direct action; on increasing air loading pressure,

the actuator stem extends. Fail-safe position is with

the stem retracted.

"R" = Reverse action; on increasing air loading pres-

sure, the actuator stem retracts. Fail-safe position is

with the stem extended.

The actuator stem-to-valve stem connection is a Quick

Disconnect joint.

II. REFERENCE

Refer to Technical Bulletin SCV-30-TB for complete

tech ni cal speciﬁ cations.

www.cashco.com/techbulletins/scv30.pdf

Refer to following Installation, Operation & Main te-

nance Manuals (IOM’s) for the actuator and/or devices

that maybe mounted to a Model SCV-30:

Actuators: www.cashco.com/IOM/C27-C53.pdf

Positioners:

P/P: www.cashco.com/techbulletins/9540l.pdf

I/P: www.cashco.com/techbulletins/srd991.pdf

I/P: www.cashco.com/iom/PS2iom.pdf

ABBREVIATIONS

ATC-FO - Air to Close, Fail Open

ATO-FC - Air to Open, Fail Close

CCW - Counter-Clockwise

CIP - Clean-in-Place

CW - Clockwise

DIR - Direct Acting

IAS - Instrument Air Supply

REV - Reverse Acting

SIG - Output Signal from Instrument

SIP - Steam-in-Place

V - Vent

Straight Body Pattern

with ATO - FC Actuator

IOM-SCV-30

12-13

MODEL SCV-30

GLOBE-STYLE - SANITARY

PNEUMATIC CONTROL VALVE

BODY IOM

SECTION II

Summary of content (12 pages)

PAGE 1
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM) IOM-SCV-30 12-13 MODEL SCV-30 GLOBE-STYLE - SANITARY PNEUMATIC CONTROL VALVE BODY IOM SECTION I I. DESCRIPTION AND SCOPE Model SCV-30 is a pneumatically actuated, globe-style control valve for throttling sanitary or biotechnological applications. The globe body comes in two variations; straight-globe pattern and angle-globe pattern, sizes 3/4" - 1-1/2" (DN20 - DN40) with standard TriClover® sanitary end connections.
PAGE 2
SECTION III III. OPERATION CONSIDERATIONS B. Steam-in-Place (SIP): 1. Orientation to be same as CIP,Section III.A.1. A. Clean-in-Place (CIP): 2. Steam may flow from either direction. 1. Control valve unit must be properly oriented per Section IV.A. to assure self-draining of valve’s internal passages. 2. Control valve unit comes in the direct action, ATC-FO arrangement or the reverse action, ATO-FC arrangement. Valve should be in the full open position before initiation of the CIP procedure.
PAGE 3
SECTION V V. MAINTENANCE (3.1) away from the body's (1) integral seat until the plug is 100% open.). A. General: WARNING SYSTEM UNDER PRESSURE. Prior to performing any body disassembly or removal for maintenance, inspection or cleaning, isolate the valve body from the system and relieve all pressure. Failure to do so could result in personal injury. 1. Maintenance procedures hereinafter are based upon removal of the control valve unit from the piping system where installed. 2.
PAGE 4
. Slide bonnet (2) up over end of plug/stem (3.1) and set aside. 5. Place plug/stem end (3.1) into a soft-jawed vise with plug head-end oriented upwards. D. Trim Inspection and Replacement: 1. Inspect body (1), bonnet (2) and plug/diaphragm (3) for wear. If seating surfaces show wear, perform the following repairs: 2. Pull diaphragm (3.2) away from plug/stem (3.1). Discard used diaphragm (3.2). 3. Using palm of hand, rub away any adhesive (3.3) that remains “stuck” onto the plug (3.1). 4.
PAGE 5
13. After proper cure, remove temporary weight and plug/diaphragm sub-assembly (3) from the body (1). Remove body (1) from vise. 14. Reclean body(1), plug/diaphragm subassembly (3), bonnet (2), and “Tri-Clamp” subassembly (4) per owner's procedures. A final rinse with ultra-clean water is recommended. E. Body Reassembly: Lower actuator assembly (AA) down and over valve stem (3.1), so the upper end of the valve stem (3.1) passes thru lower opening of the yoke (3) and thru yoke nut (8).
PAGE 6
B. Procedure – Reverse Action, ATO-FC: 1. Reference the nameplate (40) attached to the actuator yoke (3). Determine the bench setting of the installed range springs (10) from the nameplate (40). 2. Connect a temporary air supply with an in-line adjustable airset regulator and gauge to the lower actuator connection. DO NOT LOAD with any air pressure at this point. 3. To determine when stem/plug (3) begins to lift out of the seat, touch the stem below the coupling with one finger.
PAGE 7
setting; i.e. for a 5-15 psig (.34 -1.0 Barg) range, set pressure at 15 psig (1.0 Barg). Take note of the pressure reading when stem travel actually stops. 5. If the loading pressure, when stem movement stops, is below the upper end of the desired bench setting, then the combined stem (3, 6) length is too long. a. Rotate jam nuts (17) down to base of threads on upper coupling (42a). b. Decrease pressure in the actuator to approximately mid range of the bench setting. c.
PAGE 8
SECTION VII VII.TROUBLE SHOOTING GUIDE 1. Unit can not pass enough flow. Possible Cause A. Sizing data not correct; valve undersized. Remedy A1. A2. B. Obstruction at inlet. B. Check actual pressures, temperature, and flow rates against the variables used for sizing. Recalculate Cv Required. Replace unit with larger body size. Remove valve from line and inspect for something causing blockage. 2. Valve body leaking at clamped end or bonnet connection joints. Possible Cause Remedy A.
PAGE 9
SECTION VIII VIII. ORDERING INFORMATION NEW REPLACEMENT UNIT vs PARTS "KIT" FOR FIELD REPAIR To obtain a quotation or place an order, please retrieve the Serial Number and Product Code that was stamped on the metal name plate and attached to the unit. This information can also be found on the Bill of Material ("BOM"), a parts list that was provided when unit was originally shipped. (Serial Number typically 6 digits).
PAGE 10
NOTES 10 IOM-SCV-30
PAGE 11
ITEM NO. 1 2 3 3.1 3.2 4 8 DESCRIPTION Body Bonnet Plug/Diaphragm Assy. Plug/Stem Plug Diaphragm “Tri-Clover” Clamp Yoke Nut FIGURE 4: Straight-Globe Body Assembly (BA) ITEMS NOT SHOWN ITEM NO. DESCRIPTION 3.3 Adhesive 4.
PAGE 12
Cashco, Inc. P.O. Box 6 Ellsworth, KS 67439-0006 PH (785) 472-4461 Fax. # (785) 472-3539 www.cashco.com email: sales@cashco.com Printed in U.S.A. SCV-30-IOM Cashco GmbH Handwerkerstrasse 15 15366 Hoppegarten, Germany PH +49 3342 4243135 Fax. No. +49 3342 4243136 www.cashco.com Email: germany@cashco.com Cashco do Brasil, Ltda. Al.Venus, 340 Indaiatuba - Sao Paulo, Brazil PH +55 11 99677 7177 Fax. No. www.cashco.com Email: brazil@cashco.