Features NACE Service Ready Standard construction for the DF233 control valve features NACE trim. The valve bonnet and body also conform to NACE MR075 (National Association of Corrosion Engineers) recommendations. ASME Class 900 The DF233 is designed and rated for ASME 6.34 Class 50-900 service. Live Loaded Packing Packing for the DF233 control valve is designed to provide a quality stem seal and to prevent the loss of hazardous gases or fluids. The live loaded feature provides for reduced maintenance and positive sealing in temperature and pressure cycling conditions. Field-Reversible Actuator Field conversion of the DF233 actuator is designed to be quick and easy. Switch the DF233 from a spring-close to spring-open actuator without any additional parts. Figure DF233 Control Valve Easily Maintained The hammer union body to bonnet connection allows for easy removal of the bonnet/actuator for access to trim and packing. Trim removal requires no special tools and is quick and simple. The two piece cage seat allows replacement of the seat ring while using the existing cage making port changes and maintenance more economical. The Dyna-Flo Model DF233 control valve is primarily designed for on/off control of a variety of gases or fluids. These tough valves are manufactured for use as dump valves and feature a low profile and lightweight design that fits into tight locations and makes for easier handling. The DF233 is well suited for many other high pressure gas or fluid applications up to 2,250 Psig (5,53 kpag). The DF233 is available in inch and 2 inch sizes, either in a globe or angle style valve body with threaded NPT or flanged connections. Low Temperature Materials The DF233 valve and actuator are constructed with materials that are capable of functioning in temperatures of -40 o C. Open Yoke The DF233 features an open yoke that allows for the mounting of a feedback arm to facilitate positioners and indicators. Versatile Trim Material Options Plug and seat ring materials are available in S7400 DH50 and S30300 / Tungsten Carbide. The Dyna-Flo Model DF233 control valve is manufactured to a high level of quality specifications to ensure superior performance and customer satisfaction.
SPECIFICATIONS Port Diameter /4, 3/8, /2, 3/4, and See Table & 2 for details and Port Diameters. Sizes and Connection Styles Size: & 2 inch Rating: ASME 50 / 300 / 600 / 900 Connections: NPT / RF / RTJ See Table, 2, & 3 for details and Port Diameters. Standard Shut-off Classification ANSI Class IV ASME / FCI 70-2 Optional Soft Seat ASME Class VI ASME / FCI 70-2 Dimensions See Table 5 (Page 6) & Figures 4-5 (Page 7) Flow Characteristics Quick Opening Flow Direction Up or down (See Table 2) Maximum Travel 3/8 inch (0 mm) Material Temperature Capabilities ody Assembly -46 to 50 o C (-50 to 300 o F) Actuator Assembly -40 to 82 o C (-40 to 80 o F) ody Style Available in Globe and Angle style. onnet/ody Connection Threaded Hammer Nut. Actuator Configuration The DF233 utilizes a on/off style spring and diaphragm actuator. Fail action is field-reversible. Maximum Actuator Casing Pressure 50 Psig (345 kpag) Effective Actuator Diaphragm Area 33 inches 2 (23 cm 2 ) Actuator Pressure Connections NPS /4 inch NPT For more information and other options contact your Dyna-Flo sales office. Maximum Pressures and Temperatures Valve Size 200 O F (93 O C) 300 O F (50 O C) NPS -2 inch NPT 2,250 Psig (5,53 kpag) 2,82 Psig (5,044 kpag) NPS -2 inch Class 600,500 Psig (0,342 kpag),454 Psig (0,024 kpag) NPS -2 inch Class 900 2,250 Psig (5,53 kpag) 2,85 Psig (,565 kpag) - The limitations shown are as per ASME 6.34. Refer to the pressure temperature ratings in this standard for all other flange ratings. Do not exceed these ratings. Available Valve Sizes, Connection Styles and Approximate Weights Port Diameter inch (mm) Inch Valve /4 (6.4) 3/8 (9.5) /2 (2.7) 3/4 (9.7) (25.4) 2 Inch Valve /4 (6.4) 3/8 (9.5) /2 (2.7) 3/4 (9.) (25.4) Table Connection Style Threaded lb (kg) Raised Face (RF) Flanged lb (kg) Ring Type Joint (RTJ) Flanged lb (kg) NPT Class 50 Class 300 Class 600 Class 900 Class 600 Class 900 25 () 29 (3) 35 (6) 35 (6) 64 (29) 35 (6) 64 (29) NPT Class 50 Class 300 Class 600 Class 900 Class 600 Class 900 30 (4) 34 (5) 50 (23) 50 (23) 89 (40) 50 (23) 89 (40) 2
Maximum Shut-off Pressure Drops Table 2 Actuator Action Fail Closed Fail Open Flow Direction (pressure tends to) Flow Up (open valve) Flow Down (close valve) Flow Up (open valve) Flow Down (close valve) Port Diameter Number of Springs 0-20 Psig Operating Signal Number of Springs 0-35 Psig Operating Signal 3 6 3 6 Psi (kpa) Psi (kpa) Psi (kpa) Psi (kpa) /4 2,250 (5,53) 2,250 (5,53) 2,250 (5,53) 2,250 (5,53) 3/8,672 (,528) 2,250 (5,53),672 (,528) 2,250 (5,53) /2 770 (5,309),867 (2,873) 770 (5,309),867 (2,873) 3/4 *** 684 (4,76) *** 684 (4,76) *** 290 (2,000) *** 290 (2,000) /4,469 (0,28) 2,250 (5,53),469 (0,28) 2,250 (5,53) 3/8 2,39 (4,748) 2,250 (5,53) 2,39 (4,748) 2,250 (5,53) /2 2,250 (5,53) 2,250 (5,53) 2,250 (5,53) 2,250 (5,53) 3/4,70 (,790) 942 (6,495) 2,250 (5,53) 2,250 (5,53) 784 (5,405) 392 (2,703),52 (0,425),064 (7,336) /4 2,250 (5,53) *** 2,250 (5,53) 2,250 (5,53) 3/8 2,250 (5,53) *** 2,250 (5,53) 2,250 (5,53) /2,93 (8,225) *** 2,250 (5,53) 2,035 (4,03) 3/4 385 (2,654) ***,507 (0,390) 759 (5,233) 77 (,220) *** 807 (5,564) 345 (2,379) /4 2,244 (5,472) *** 2,250 (5,53) 2,250 (5,53) 3/8 2,250 (5,53) *** 2,250 (5,53) 2,250 (5,53) /2 2,250 (5,53) *** 2,250 (5,53) 2,250 (5,53) 3/4 897 (6,85) *** 897 (6,85),646 (,349) 672 (4,633) *** 672 (4,633),288 (8,880) Table 3 DF233 C v Values ody Port Size Inch (mm) C v Value (00% Travel) /4 (6.4).68 Flow Up 3/8 (9.5) 3.82 /2 (2.7) 5.70 3/4 (9.).6 (25.4) 5.5 /4 (6.4).68 Flow Down 3/8 (9.5) 3.82 /2 (2.7) 6.9 3/4 (9.) 3.0 (25.4) 8.0 3
DIAPHRAGM UPPER CASING ACTUATOR SPRING LOWER CASING VALVE STEM USHING ONNET PACKING SPRING WASHERS ODY VALVE STEM WASHER PIN VALVE PLUG CAGE SEAT RING NOTE - Diagram above displays a /4 to 3/4 port valve plug (Key 3) Figure 2 Cross-section of DF233 inch Valve ody Fail Open Configuration 4
DIAPHRAGM UPPER CASING ACTUATOR SPRING LOWER CASING STEM USHING ONNET PACKING SPRING WASHERS ODY VALVE STEM WASHER PIN VALVE PLUG CAGE SEAT RING NOTE - Diagram above displays a port valve plug (Key 3) Figure 3 Cross-section of DF233 2 inch Valve ody Fail Closed Configuration 5
Table 4 Standard Construction Materials Key Part Description Standard Construction Valve ody LCC 2 onnet LCC 3 Valve Plug S7400 DH50) (NACE), S30300 / Tungsten Carbide (optional) 4 Cage (Part of Seat Ring) S7400 DH50) (NACE), S30300 / Tungsten Carbide (optional) 5 Seat Ring S7400 DH50) (NACE), S30300 / Tungsten Carbide (optional) 6 Valve Stem S2090 7, 8, 9, 0, O-Ring HNR 2 Packing PTFE / CPTFE 3 Spring Washers N0778 4 Valve Stem ushing Nylon 5 Actuator Diaphragm Nitrile / Nylon 6 Actuator Springs Steel / Zinc 7 Upper Casing Steel / Zinc 8 Lower Casing Steel / Zinc 9 Washer S30200 20 Pin S3600 - All S3600 barstock is dual grade S3600/S3603 (36/36L) DF233 RF and RTJ Valve Dimensions Inches (mm) Valve Size Connection Style A NPT 6.25 (59) 3.3 (80) ASME 50 RF 7.25 (84) 3.63 (92) ASME 300 RF 7.75 (97) 3.88 (99) ASME 600 RF 8.25 (20) 4.3 (05) ASME 900 RF 9.38 (238) 4.69 (9) ASME 600 RTJ 8.25 (20) 4.3 (05) ASME 900 RTJ 9.38 (238) 4.69 (9) NPT 7.50 (9) 3.75 (95) ASME 50 RF 0.00 (254) 5.00 (27) ASME 300 RF 0.50 (267) 5.25 (34) 2 ASME 600 RF.25 (286) 5.63 (43) ASME 900 RF 2.2 (308) 6.06 (54) ASME 600 RTJ.38 (289) 5.69 (45) ASME 900 RTJ 2.25 (3) 6.3 (56) NOTE: Refer to Figures 4 & 5 Table 5 6
Figure 4 DF233 inch Control Valve Dimensions inch (mm) Ø9.90 (Ø252) /4 INCH NPT CONNECTION Ø9.90 (Ø252) 8.64 (29) 5.9 (32) /4 INCH NPT CONNECTION 8.64 (29) A FLANGED VIEW 6.25 (59) NPT VIEW.77 (45) 3.3 (80) ANGLE ODY VIEW 3.3 (80).77 (45) Figure 5 DF233 2 inch Control Valve Dimensions inch (mm) Ø9.90 (Ø252) /4 INCH NPT CONNECTION Ø9.90 (Ø252) 8.95 (227) 5.52 (40) /4 INCH NPT CONNECTION 8.95 (227) 7.50 (9).73 (44) 3.75 (95) A FLANGED VIEW NPT VIEW 3.75 (95).73 (44) ANGLE ODY VIEW 7
MODEL NUMERING SYSTEM SAMPLE PART NUMER: DF233-GC3-6N-4S-X INCH 2 2 INCH G GLOE STYLE T ANGLE STYLE C FAIL CLOSED O FAIL OPEN 3 SIZE 33 ACTUATOR WITH 0-22 PSIG OPERATING SIGNAL 6 VALVE SIZE ODY STYLE ACTUATOR STYLE SPRING RANGE SIZE 33 ACTUATOR WITH 0-35 PSIG OPERATING SIGNAL NUMER OF SPRINGS 3 3 SPRINGS 6 6 SPRINGS ASME RATING A 50 300 C 600 D 900 F 900 NPT CONNECTION STYLE N NPT F RF J RTJ TRIM SIZE 4 /4 INCH 38 3/8 INCH 2 /2 INCH 34 3/4 INCH 0 INCH TRIM MATERIAL S S7400 DH 50 T S30300 / TUNGSTEN CARIDE SPECIAL X SPECIAL G C 3 6 N 4 S X DF233 - - - - Our Commitment to Quality Dyna-Flo is committed to continuous improvement. While all efforts have been made to ensure the accuracy of the content in this document, modifications or improvements to the information, specifications, and designs may occur at any time without notice. This document was published for informational purposes only, and does not express or imply suitability, a warranty, or guarantee regarding the products or services described herein or their use or applicability. Neither, nor any of their affiliated entities assumes responsibility for the selection, use and maintenance of any product. Responsibility for selection, use and maintenance of any product remains with the purchaser and end-user. 2