Series 26d Ball Valve

Transcription

1 Stainless Steel Series 26d Ball Valve Application Tight-closing ball valve made of stainless steel for corrosive media, especially to meet high process requirements in chemical plants: Nominal sizes DN 15 to 100 or NPS ½ to 4 Nominal pressures PN 16 and 40 or Class 150 and 300 Temperatures 10 to 200 C (optional 60 C/ 80 C) The control equipment consists of a stainless steel ball valve and a pneumatic quarter-turn actuator, lever or gear-operated actuator. The valves are designed according to the modular-assembly principle have the following features: Design Standard With live-loaded sealing system Fire-safe version with test certifi cate according to British Standard B.S Part 2 Further features Valve body made of stainless steel /A351 CF8M Seat ring live-loaded on one side or with fl oating ball Exchangeable bore seal On/off service with leakage rate A according to DIN EN , bubble-tight version Shaft sealed by a self-adjusting PTFE V-ring packing, loaded by spring washers, requiring no maintenance. Blowout-proof shaft made of , TA Luft DIN face-to-face dimensions Series 1 and 27 according to EN 558 ANSI face-to-face dimensions according to ASME B Connecting fl ange for actuators according to DIN ISO 5211 Double body seal system Fig. 1 - Series 26d Ball Valve with Series 31a Quarter-turn Actuator Versions Series 26d Ball Valve optionally in the following versions: Ball valve with lever Ball valve with gear-operated actuator Ball valve with pneumatic quarter-turn actuator (see associated data sheet for details) According to customer specifi cations Special versions Valve body made of steel /A216 WCB Backup shaft seal Heating jacket, stainless steel with various connection Flange versions according to DIN EN 1092 Ball valve for throttling service using characteristic seat ring Body, seal or ball modifi cations Fig. 2 - Series 26d Ball Valve with Series 31a Quarter-turn Actuator 1 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon: Fax: vertrieb@pfeiffer-armaturen.com Internet:

2 Pfeiffer Chemie-Armaturenbau GmbH Item Description Item Description 1 Main body 12 V-ring packing 2 Side body 13 Spring washer 4 Ball 14 Screw 5 Shaft 15 Screw 6 Packing fl ange 16 Stud bolt 7 Bearing bushing 17 Nut 8 Bearing bushing 18 Graphite ring 9 Set of seat rings 19 Graphite ring 10 PTFE ring 20 Bushing 10a Graphite ring 21 Lever 11 Set of spring washers Table 1 - Parts list 2 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon Fax: vertrieb@pfeiffer-armaturen.com Internet:

3 Principle of operation: The Series 26d Ball Valves allow the full fl ow through the valve in either direction. The ball ( 4 ) with its cylindrical passage rotates around the middle axis. The opening angle of the ball determines the fl ow through the free area between the body ( 1 ) and passage. The ball ( 4 ) is sealed by exchangeable seat rings ( 9 ). The ball shaft is sealed by a PTFE V-ring-packing ( 12 ) which is loaded by spring washers positioned above the packing. The shaft is fi tted with a lever. Optionally, a pneumatic actuator or gear-operated actuator can be fi tted. Additional accessories: The following accessories are available either separately or in combination: Shaft extension (100 mm, standard) Pneumatic and electric quarter-turn actuators Positioner (with optional ball valve for throttling service) Limit switches Solenoid valves Filter regulator Further accessories are available on request to meet customer specifi cations. Advantages of the live-loaded sealing system: Note: The Series 26d Ball Valves can also be used for throttling service. Refer to the data sheet <DB 20a-kd>. Note: Before using the valve in hazardous areas, check whether this is possible according to ATEX 94/9/EC by referring to the operating instructions <BA 26a>. Fail-safe position: Depending on how the pneumatic actuator is mounted on the valve, the valve has two fail-safe positions which become effective when the air pressure in the actuator is relieved or when the supply air fails: Ball valve with fail-close actuator Upon air failure, the valve is closed. The valve opens when the signal pressure increases, acting against the force of the springs. Ball valve with fail-open actuator Upon air failure, the valve opens. The valve closes when the signal pressure increases, acting against the force of the springs. Fig. 6 Live-loaded sealing system Floating ball and live-loaded sealing system Maintenance-free and self-adjusting Highest level of sealing, even under extreme pressure and temperature fl uctuations Longer service life Optional material combinations: Other materials can used for the body, shaft, ball and seals of the Series 26d Ball Valve to optimally adapt the valve to the operating conditions in the plant. Live-loaded sealing system Two active seat rings Reduced increase in torque at increasing temperatures. As a result, smaller actuators are required for automation. All in all: extremely economic! 3 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon: Fax: vertrieb@pfeiffer-armaturen.com Internet:

4 Pfeiffer Chemie-Armaturenbau GmbH Pressure-temperature diagrams for DIN version: The operating range is determined by the pressure-temperature diagram. Process data and medium may infl uence the values in the diagram. Pressure-temperature diagram, PN 16 Fig. 7 - Pressure-temperature diagram, PN 16 Pressure-temperature diagram, PN 40 Fig. 8 - Pressure-temperature diagram, PN 40 4 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon Fax: vertrieb@pfeiffer-armaturen.com Internet:

5 Pressure-temperature diagrams for ANSI version: The operating range is determined by the pressure-temperature diagram. Process data and medium may influence the values in the diagram. Pressure-temperature diagram, Class 150 Fig. 9 - Pressure-temperature diagram, Class 150 Pressure-temperature diagram, Class 300 Fig Pressure-temperature diagram, Class of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon: Fax: vertrieb@pfeiffer-armaturen.com Internet:

6 Pfeiffer Chemie-Armaturenbau GmbH General technical data: DIN ANSI Nominal size DN 15 to 100 NPS ½ to 4 Nominal pressure PN 16 or 40 Class 150 or 300 Temperature range 10 to +200 C (optional 60 C/ 80 C) Ball sealing TFM (PTFE) Leakage rate Leakage rate A according to DIN EN , P12 (leakage rate 1 BO acc. to DIN 3230 Part 3) Flanges DIN EN 1092 ASME B16.34 and B16.5 Packing PTFE V-ring packing loaded by spring washers Table 2 - Technical data Materials: DIN ANSI Main body A351 CF8M Side body / A351 CF8M Ball A351 CF8M Shaft A479 S Seat rings TFM (PTFE) Spring washer encapsulated in white PTFE Packing PTFE V-ring packing with spring washers in , Delta-Tone Upper bearing bushing PTFE with 25 % glass Lower bearing bushing PTFE with 25 % carbon Body sealing White PTFE/graphite Table 3 - Materials K VS and C V coefficients: DN NPS ½ ¾ 1 1¼ 1 ½ 2 2½ 3 4 kvs On Cv request Table 4 - K VS and C V coeffi cients Torque and breakaway torques: Differential pressure p in bar DN NPS Mdmax. Md in Nm in Nm Mdl in Nm 15 ½ ¾ ¼ On request 40 1 ½ ½ Table 5 - Max. permissible torque, required torque and breakaway torque The breakaway torques specifi ed are average values which were measured at the appropriate differential pressures with air at 20 C. Operating temperature, medium as well as longer periods of operation may lead to a notable change in breakaway and operating torques. The listed max. permissible operating torques are valid for the standard materials in Table 3. 6 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon Fax: vertrieb@pfeiffer-armaturen.com Internet:

7 Dimensions and weights: DN PN FTF Series Series A E F H H L M M5 M6 M6 M6 M6 M6 M8 M8 SW DIN/ISO connection F03 F05 F05 F07 F07 F07 F10 F10 Weight Series in kg Series On request NPS ½ ¾ 1 1¼ 1½ 2 2½ 3 4 FTF Class Class A E F H H L M M5 M5 M6 M6 M6 M6 M8 M8 SW DIN/ISO connection F03 F04 F05 F07 F07 F07 F10 F10 Weight Class in kg Class Table 6 - Dimensions in mm and weights in kg On request 7 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon: Fax: vertrieb@pfeiffer-armaturen.com Internet:

8 Pfeiffer Chemie-Armaturenbau GmbH Selection and sizing of the ball valve: 1. Calculate the required nominal size. 2. Select the valve in accordance with Table 2 and 3 as well as from the pressure-temperature diagram. 3. Select the appropriate actuator using Table Select additional equipment. Ordering text: Series 26d Ball Valve in stainless steel DN/NPS.... PN/Class.... Live-loaded sealing system or with fl oating ball Fire-safe version, optional special version Actuator (brand name):.... Supply pressure:.... bar Fail-safe position:.... Limit switch (brand name):.... Solenoid valve (brand name):.... Positioner:.... Others:.... Note: All relevant details regarding the version ordered, which deviate from the specifi ed version in this technical description data, can be taken from the order confi rmation. 8 of 8 Pfeiffer Chemie-Armaturenbau GmbH Telefon Fax: vertrieb@pfeiffer-armaturen.com Internet: Specifications subject to change Edition August / PDF=198