Manual

ManualsBrandsLeslie Controls ManualsEquipmentCONTROL VALVES DLOS-2 & DDLOS-2 (150/300)

Installation, Operating,

and Maintenance

Instructions Parts List

10/9.5.1.2

Rev. 2

CONTROL VALV

Low Pressure, Single Ported, Cage Trim

Classes DLO-2, DDLO-2 125# & 250# Cast Iron

Classes DLOS-2 & DDLOS-2 150# & 300# Cast Steel

Classes DLOS-2 & DDLOS-2 150# & 300# Stainless Steel

12501 Telecom Drive, Tampa Florida 33637

TABLE OF CONTENTS

SECTION I – INSTALLATION .................................................................................................................... 2

SECTION II – OPERATION ......................................................................................................................... 2

SECTION III – MAINTENANCE ................................................................................................................. 3

SECTION IV – PARTS LIST....................................................................................................................... 10

ILLUSTRATION INDEX

DRAWINGS, DIMENSIONS, TYPICAL INSTALLATIONS AND

SCELLANEOUS DATA

Figure 1 - Typical Installation Expand as required for fluid flow………………………………………………2

Figure 2 - Typical Control Valve Station for Control of Compressible Fluids at 25% or Less of Inlet Pressure.

Expand further as required for fluid flow………………………………………………………………….2

Figure 3 - Typical Valve Cutaway………………………………………………………………………………3

Figure 4 - Installation Sequence…………………………………………………………………………………4

Figure 5 - Installation Sequence…………………………………………………………………………………4

Figure 6 - Installation Sequence…………………………………………………………………………………5

Drawing - Diaphragm Control Valve…………………………………………………………………………..11

Drawing - Accessory Mount View……………………………………………………………………………..12

Drawing - Diaphragm Control Valve CLASS D(D)LOS-2, D(D)LOAS-2 and CLASS

D(D)LO-2, D(D)LOA-2……………………………………………………………………………14

Drawing - Direct Acting……………………………………………………………………………………….17

Drawing - Reverse Acting……………………………………………………………………………………..18

Summary of content (20 pages)

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2501 Telecom Drive, Tampa Florida 33637 Installation, Operating, and Maintenance Instructions Parts List 10/9.5.1.2 Rev. 2 CONTROL VALVES Low Pressure, Single Ported, Cage Trim Classes DLO-2, DDLO-2 125# & 250# Cast Iron Classes DLOS-2 & DDLOS-2 150# & 300# Cast Steel Classes DLOS-2 & DDLOS-2 150# & 300# Stainless Steel TABLE OF CONTENTS SECTION I – INSTALLATION ....................................................................................................................
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CAUTION! SECTION I – INSTALLATION 1. The piping system must be adequately designed and supported to prevent extraordinary loads to the pressure VALVE POSITION Install control valve in the highest horizontal line of piping in an accessible location and with arrow on side of valve body in direction of fluid flow. Control valve may be placed in any position, but upright is preferable for ease of maintenance. Expand outlet pipe to twice control valve inlet pipe size. Use tapered expander.
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Figure 3 - Typical Valve Cutaway 3
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BRAIDED PTFE/GRAPHITE TYPE PACKING SECTION III – MAINTENANCE To reduce maintenance time refer to proper drawing and follow steps shown below for applicable operation. RENEWING VALVE PACKING (See Fig. 3, Fig. 4 and 5) PLUG STEM Renew valve plug stem packing if control valve has been in service beyond normal maintenance and packing shows signs of wear. Wear will be indicated by leakage at the packing gland. Minor leakage of graphite packing can be corrected by tightening the packing flange.
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LAMINATED GRAPHITE PACKING WARNING Packing tools are available from Leslie Controls and should be used to insure proper installation of packing. Packing tool reference numbers are shown on Dwg. 10/0.5.9, which also shows how to make the tools. Injury or death can occur due to failure to completely isolate valve from all sources of pressure before beginning disassembly. Do not proceed until valve has been completely isolated from the process and vented to atmosphere.
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5. Remove bonnet gasket (8), seat retainer (5), seat ring (4) and seal (3). If necessary, remove seat ring by forcing a wooden dowel into seat bore and lifting. CLEANING 1. Clean all parts thoroughly. Polish valve plug stem with crocus cloth. It should be smooth and free of scratches in packing area. Use approved, non-residue forming solvent for cleaning. Wipe dry with clean cloth. 3.
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actuator over valve plug stem and bolts (9) to top of packing bearing (12). Secure with two nuts (7) finger tightened. 7. UNDERTRAVEL – (Travel is too short) This is not possible if prior step 15 was done and correct parts were used. 14.Secure Actuator flange to bonnet flange with 8. When correct travel has been obtained reduce operating pressure sufficiently to move valve plug away from seat ring. Then turn valve stem one full turn out of upper stem threads. Secure locknut. 9.
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close tightly and will not begin to open until the 3 PSIG operation pressure is exceeded. DISASSEMBLY NOTE A: A control valve which has been adjusted to provide 3 PSIG starting pressure plus valve closure force (with pressure in body) will have a considerably higher start-pressure than 3 PSIG, when tested at 0 body pressure. REPLACING DIAPHRAGM, STEM SEALS, ETC. (See Fig. 7 and 9 in Appendix) NOTE B: Air pressures quoted are relative.
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10.Examine gasket. Replace seal if necessary to obtain an air-tight seal. 11.Clean all metal parts. Remove any rust, dirt or sharp edges that might damage stem seal. 12.Lubricate spring washer(s) (33 & 34), spring adjustor (35) and actuator stem threads with anti-seize compound. REASSEMBLY 1. 55R & 85R – Place the new stem seal in position and install the seal ring with the lip upward. Tighten screws. Press stem seal down until flush with spacer, install lower diaphragm case and tighten nuts. 2.
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SECTION IV – PARTS LIST DIAPHRAGM CONTROL VALVE CLASS DLOS-2, DLOAS-2 CLASS DDLOS-2, DDLOAS-2 CAST STEEL CAST IRON CAST STAINLESS STEEL 1” – 2” THREADED & SWE 1” – 4” FLANGED ANSI 150 & 300 1” – 4” FLANGED DIN ND-16, & ND-40 (DIMENSIONS IN INCHES/MILLIMETERS) 10
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LESLIE DIAPHRAGM CONTROL VALVE CLASS DLOS-2 CAST STEEL, IRON AND STAINLESS STEEL WITH DIAPHRAGM ACTUATORS DIRECT ACTING CLASS DDLOS-2 CAST STEEL, IRON AND STAINLESS STEEL WITH DIAPHRAGM ACTUATORS REVERSE ACTING MAXIMUM ALLOWABLE AIR PRESSURE FOR ALL DIAPHRAGM ACTUATORS IS 60 PSIG 11
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DIRECT ACTING DIAPHRAGM ACTUATORS AND HAND OPERATING DEVICE DIMENSIONS IN INCHES AND MILLIMETERS NET WT. lb/kg* SIZE DIAPH ACTUATO R in mm in mm in mm in mm 35 55 55A 85 J J-J L M N-1 P R S T U V W 9-1/4 235.0 12 304.8 12 304.8 14-3/4 374.7 3-15/16 100.0 5-1/16 128.6 5-1/16 128.6 6-1/4 158.8 12-3/8 314.3 15-1/4 387.4 15-1/4 387.4 19-5/8 498.5 12-3/8 314.3 15-1/4 387.4 15-1/4 387.4 19-5/8 498.5 6-1/4 158.8 7 177.8 7 177.8 8-1/2 215.9 5-1/2 139.7 5-1/2 139.7 5-1/2 139.7 6-7/16 163.
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CONTROL VALVE – CAST IRON BODY DIMENSIONS IN INCHES SIZE A A-1 A-2 B ½ ¾ 1 1-1/2 2 7-3/4 7-3/4 7-3/4 9-1/4 10-1/2 4-1/8 4-1/8 4-1/8 4-5/8 5-1/4 3-5/8 3-5/8 3-5/8 4-5/8 5-1/4 5-3/16 5-3/16 5-3/16 7-1/2 7-3/4 1 1-1/2 2 2-1/2 3 4 7-1/4 8-3/4 10-1/2 10-7/8 11-3/4 13-7/8 3-7/8 4-3/8 5 5-13/16 5-7/8 6-15/16 3-3/8 4-3/8 5 5-1/16 5-7/8 6-15/16 5-3/16 7-1/2 7-3/4 8-3/16 8-1/2 10-5/16 1 1-1/2 2 2-1/2 3 4 7-3/4 9-1/4 10-1/2 11-1/2 12-1/2 14-1/2 4-1/8 4-5/8 5-1/4 6-1/8 6-1/4 7-1/4 3-5/8 4-5/8 5-1/4 5-
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LESLIE DIAPHRAGM CONTROL VALVE CLASS D(D)LOS-2, CLASS D(D)LOAS-2 AND CLASS D(D)LO-2, D(D)LOA-2 MAIN BODY SUBASSY (CAST IRON, CAST CARBON STEEL OR STAINLESS STEEL) 1 / 2” THRU 4” VALVE (WITH BRAIDED TEFLON GRAPHITE PACKING) 1 / 2” THRU 4” VAVLE (WITH TEFLON CHEVRON PACKING) 14
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DIAPHRAGM CONTROL VALVE PARTS LIST WHEN ORDERING PARTS, PLEASE GIVE PART NAME AND PART REF. NO. FROM TABLE BELOW. USE PART NUMBER ONLY TO LOCATE PART ON DRAWING. PART NO.
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13 14 15† 16 17† 17† 17† 17† 18 18 18 Packing Flange Steel AISI 1144 1 A69405 Pipe Plug Steel COMMERCIAL 1 A66166 Packing Spring Teflon Packing Monel 400 COMMERCIAL 1 A65353 Washer, Teflon Packing Monel 400 COMMERCIAL 1 A63926 Packing Set, Teflon Chevron Teflon COMMERCIAL 1 A28015 Packing Set Braided Teflon Grpht Teflon/Graphite COMMERCIAL 1 A69423 Packing Set, Hi-Temp Graphite Type II COMMERCIAL 1 A72363 Packing Set, Hi-Temp Graphite Type II COMMERCIAL 1 A70380 Packing Ring, Teflon Stainless Steel AISI
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DIRECT ACTING WHEN ORDERING PARTS, PLEASE GIVE PART NAME AND PART REFERENCE NUMBER FROM TABLE BELOW. USE PART NUMBER ONLY TO LOCATE PART ON DRAWING. PART NO. 1 2 3 4 5 6* 7 8* 9 9 15 16* 17 17 18 PART NAME Nut Lock Washer Handwheel Handscrew Packing Gland Packing Ring Washer O-Ring Bonnet, Compl., Iron Actuator Bonnet, Compl., Alum. Actuator Handscrew Disc, Compl. (NOTE 6) Gasket Lock Nut, Iron Actuator Lock Nut, Aluminum Actuator Diaphragm Case, Upper PART PART NAME NO.
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REVERSE ACTING WHEN ORDERING PARTS, PLEASE GIVE PART NAME AND PART REFERENCE NUMBER FROM TABLE BELOW. USE PART NUMBER ONLY TO LOCATE PART ON DRAWING. PART NO. 1 2 3 4 5 6 7 7 8 14 PART NO.
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FOR REVERSE ACTING ACTUATOR FOR DIRECT ACTING ACTUATOR VALVE TRAVEL 5/8 in ¾ in 7/8 in 1 in 1-1/8 in 1-1/4 in 1-1/2 in 2 in 15.9 mm 19.1 mm 22.2 mm 25.4 mm 28.6 mm 31.8 mm 38.1 mm 50.8 mm PART NO. 30 LIIT STOP ACTUATOR SIZE 35 55 & 55A 38403 44077 -23393 -23393 -23394 -23395 -23395 -23997 --- VALVE TRAVEL 85 24482 46890 24482 24483 23366 23366 23367 23368 5/8 in ¾ in 7/8 in 1 in 1-1/4 in 1-1/2 in 2 in PART NO.
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It is solely responsibility of system designer and user to select products and materials suitable for their specific application requirements and to ensure proper installation, operation and maintenance of these products. Assistance shall be afforded with selection of materials based on technical information supplied to Leslie Controls Inc.; however, system designer and user retain final responsibility.