Two port valves. pneumatically actuated

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Catherine Ross
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1 Two port valves pneumatically actuated

One valve - The Spirax Sarco range of KE valves and PN5000 and PN6000 pneumatic actuators are designed to give a comprehensive selection of control valves for use on steam, water, oils and most

2 One valve - The Spirax Sarco range of KE valves and PN5000 and PN6000 pneumatic actuators are designed to give a comprehensive selection of control valves for use on steam, water, oils and most industrial fluids. Modular in design, the KE control valve range incorporates many options within one body envelope. It is this highly flexible system which allows one valve to satisfy the needs of numerous industrial requirements. When coupled to either a PN5000 (spring to close) or PN6000 (spring to open) pneumatic diaphragm actuator, the KE control valve range provides a complete solution to most flow, pressure or temperature applications. 1 User benefits Designed and engineered by Spirax Sarco, ensuring long life and reliability. Numerous valve options for wide range of applications. ir-to-open or air-to-close option by the same actuator reduces overall costs. The amalgamation of valves, actuators and positioners in various configurations reduces costs and stock holding. Spirax Sarco's guarantee of worldwide technical support, knowledge and service. 2

so many options... 1. Reduced capacity trims Optional trim sizes to optimise control valve performance 4 2.

Chevron seal Standard self regulating chevron rings for constant stem friction and minimum maintenance 4.

Noise reducing trim Flow divider reduces noise and erosion from high velocity conditions 6.

3 so many options Reduced capacity trims Optional trim sizes to optimise control valve performance 4 2. Hard facing Hard faced seat and plug for high erosion resistance during cavitation, flashing and two phase flow applications 3. Chevron seal Standard self regulating chevron rings for constant stem friction and minimum maintenance 4. Characterised plugs Equal percentage, linear and fast opening trim options for process characteristic matching Noise reducing trim Flow divider reduces noise and erosion from high velocity conditions 6. Soft seal trim Soft seal trims for bubble tight shut off to NSI class VI 7. ellows seal ellows seal with back up chevron seal for high temperature applications and zero emissions 8. High temperature graphite Graphite braided rings for high temperatures provide cost effective alternative to bellows seal so many solutions! 3

4 Spirax Sarco s reputation has been built on the quality of its knowledge, service and products. For this reason every valve and actuator combination is fully tested prior to despatch to ensure installation and commissioning is quick and trouble free, and that this trouble free operation continues during the service life of the product. Our testing includes: Valve envelope pressure integrity test according to DIN 3230 and NSI Stem seal emission test Seat and plug shut-off test to NSI Control valve and actuator assembly function test Spirax Sarco is an ISO 9000 accredited company. Quality is assured 4

5 For temperature, pressure or flow control, Spirax Sarco has the answer Full range of 2-port KE valves Valve type KE71 KE73 KE73 KE43 KE43 KE63 Optional valve seals Optional valve trims 5

Typical applications Temperature control To control the flow of primary heating fluid, whether steam or hot water, to provide constant

2 Pressure control To control steam, water or air distribution lines at precise operating levels.

1 Flow control Used in conjunction with flowmeters to accurately control the flow of steam, gases or liquids.

The controller delivers an electronic output to an electro-pneumatic positioner (3) on the valve actuator (4).

6 Typical applications Temperature control To control the flow of primary heating fluid, whether steam or hot water, to provide constant secondary temperature. pplication shows the use of pneumatic power (1) and electronic intelligence (2) on a steam to liquid heat exchanger. 2 Pressure control To control steam, water or air distribution lines at precise operating levels. The system shown is a complete pneumatic controls package using a controller (1) with pneumatic valve and positioner (2). 1 Flow control Used in conjunction with flowmeters to accurately control the flow of steam, gases or liquids. The example shows the use of an electronic controller (1) signalled from a DP cell (2). The controller delivers an electronic output to an electro-pneumatic positioner (3) on the valve actuator (4). Thermal oil control Thermal oil is sometimes used as the primary heating medium. The example shows a 2-port valve arrangement although some pipe circuits are designed to use 3-port valves. Spirax Sarco 2-port valves are available with bellows spindle seals, which are recommended in thermal oil systems. 6

7 Control valve sizing and selection Step 1 Determine the valve Kv Kv calculation is an iterative process requiring knowledge of valve dynamics, piping geometry factors, and outlet velocities. In practice, the sizing chart below is based on empirical values and will cater for most applications. Kv selection example Saturated /superheated steam sizing chart C D F E 1 2 Kv Step 2 Determine the valve size Kv selected is 16 Kv of 16 requires a standard valve size of DN32 To select the correct valve turn to next page for step 3 7

8 Step 3 Select the control valve Example - From the previous page, the valve size is determined as DN32. Reference to the technical literature below allows selection by pressure and temperature. Reference to the control valve selection guide opposite allows selection of the valve depending on the available choices as shown. This example shows a DN32 KE73, Kvs 16, Flanged to PN25 Valve technical information KE71 / KE73 range ody SG iron DIN 1693 GGG 40.3 onnet SG iron DIN 1693 GGG 40.3 KE43 range ody Cast steel DIN GSC 25 onnet Cast steel DIN GSC 25 KE63 range ody Stainless steel DIN onnet Stainless steel DIN (DN15-50) DIN (DN65-) Maximum valve differential pressures - Refer to operating range graphs. Technical data Plug design DN15-32 Caged parabolic DN40 - Vee port Leakage 0.01 % of Kvs Flow characteristic (standard) Equal percentage Rangeability 50:1 Travel DN15 to 50 / DN65 to 20 mm / 30 mm Control valve selection guide Valve size Specified from page 7 Valve series Valve characteristics ody material Connections Stem sealing option * Seating option * Trim * Kvs K series - 2-port E = Equal percentage L = Linear F = Fast opening 4 = Cast steel 6 = Stainless steel 7 = SG iron 1 = Screwed 3 = Flanged = ellows sealed H = High temperature packing G = Soft seal (PTFE) W = Hard facing L = Low noise To be specified Connection type See valve range on page 5 * If standard option leave blank. DN32 K E PN25 Materials ll valve ranges Valve plug Stainless steel S S29 (KE71/73/43) STM 351 CF3M (KE63) Valve seat Stainless steel S S29 (KE71/73/43) STM L (KE63) Valve stem Stainless steel S S29 (KE71/73/43) STM L (KE63) Gland rings PTFE chevrons onnet gasket Semi - rigid graphite laminate Operating range KE43 Temperature C Steam saturation curve Operating range KE71 / KE73 Temperature C Pressure bar g Steam saturation curve Pressure bar g The product must not be used in the red area. The product must have high temperature bolting and packing for use in the yellow area. Operating range KE43 Temperature C Steam saturation curve Pressure bar g Operating range KE71 / KE73 Temperature C Pressure bar g Operating range KE63 Temperature C Steam saturation curve Steam saturation curve Pressure bar g The product must not be used in the red area. The product must have high temperature bolting and packing for use in the yellow area. 8 Valve selected is: 1 - DN32 KE73, with Kvs 16 flanged to PN25

9 Step 4 Select a spring to close actuator ctuator selection example: Valve Kv = 16 Maximum differential pressure = 5 bar g ir pressure available = 6 bar g Valve size DN Control signal is 4-20 m Move vertically downwards from the DN32 valve. The smallest actuator, 20 mm travel 30 mm travel which will effect closure is a PN5123 actuator with 2 to 4 spring rating. ir Standard Kvs value Standard Kvs value pressure required is 4.5 bar g and a positioner is recommended PN 5000 series spring extend (fail close) ctuator Model Spring ir Pressure Positioner Maximum valve differential pressure ( P) bar type range required required (Refer to operating range graphs for limiting conditions) bar bar g For soft seated valves reduce p by 40% PN5 Series Optional Optional Yes Yes Yes PN5200 Series Optional Optional Optional Optional Yes PN5300 Series Optional Optional Optional Optional Yes Optional Yes PN5400 Series Optional Optional Optional Optional Yes Optional Yes PN5500 Series Optional Optional Yes Optional Optional Yes PN5600 Series Optional Optional Yes Optional Optional Yes Technical data actuators Temperature range -20 to 110 C Maximum air operating pressure = 6 bar (2.5 bar models 5500 / 5600) Linearity 2 % Hysteresis ctuator technical information 3 % Maximum ir supply connection ctuator type Connection 5 and 5200 Series 1 /8" SP 5300 and 5400 Series ¼" SP 5500 and 5600 Series ¼" NPT Compressed air consumption ctuator type Travel Volume - Ltrs (normal) Materials 5 Single spring 20 mm 0.33 Diaphragm housing Pressed steel 5200 Series 20 mm 0.99 Rolling diaphragm Fabric reinforced nitrile rubber 5300 Series 20 / 30 mm 1.39 / 1.65 Spring Spring steel 5400 Series 20 / 30 mm 2.36 / 2.78 Yorke 5 Series luminium 5500 Series 20 / 30 mm 6.2 / 7.1 Pillars Steel 5600 Series 20 / 30 mm 8.4 / 9.6 Spindle Stainless steel ctuator selected is: PN5123 with 2-4 bar spring range 9

10 Step 4 Select a spring to open actuator ctuator selection example: Valve Kv = 16 Maximum differential pressure = 5 bar g ir pressure available = 6 bar g Control signal 4-20m Move vertically downwards from the DN32 valve. The smallest actuator to close against differential pressure is a PN6120 actuator with 0.2 to 1.0 spring rating. ir pressure required is 4 bar g and a positioner is required. Valve size DN mm travel 30 mm travel Standard Kvs value Standard Kvs value PN 6000 series spring retract (fail open) ctuator Model Spring ir pressure Positioner Maximum valve differential pressure ( P) bar type range required required (Refer to operating range graphs on page 8 for limiting conditions) bar bar g For soft seated valves reduce p by 40% PN6 Series Optional Optional Yes Yes Yes PN6200 Series Optional Optional Yes Optional Optional PN6300 Series Optional Optional Yes Optional Optional Optional Yes PN6400 Series Optional Optional Yes Optional Optional Optional Yes PN6500 Series Optional Optional Yes Optional Optional Yes PN6600 Series Optional Optional Yes Optional Optional Yes Technical data actuators Temperature range -20 to 110 C Maximum air operating pressure = 6 bar(2.5 bar models 6500 / 6600) Linearity 2 % Hysteresis Compressed air consumption ctuator technical information 3 % Max ctuator type Travel Volume - Ltrs (normal) 6 Single spring 20 mm Series 20 mm Series 20 and 30 mm 1.39 / Series 20 and 30 mm 2.36 / Series 20 and 30 mm 6.2 / Series 20 and 30 mm 8.4 / 9.6 ir supply connection ctuator type Connection 6 and 6200 Series 1 /8" SP 6300 and 6400 Series ¼" SP 6500 and 6600 Series ¼" NPT Materials Diaphragm housing Rolling diaphragm Pressed steel Fabric reinforced nitrile rubber ctuator selected is: PN6120 with a bar spring range Spring Pillars Spindle Spring steel Steel Stainless steel 10

11 Step 5 Select the positioner Technical specification PP5 Positioner EP5 Positioner Operating mode Pneumatic / Pneumatic Electro / Pneumatic Case material Cast aluminium with anti-corrosive paint Enclosure rating IP54 IP54 (ISP5 to EEx-ia-IIC-T6, T5, T4 CESI) ir connections ¼" NPT Maximum air supply pressure 6.0 bar g 6.0 bar g ir consumption 0.7 m 3 / h at 6.0 bar g 0.7 m 3 / h at 6.0 bar g Electrical connections - PG13.5 Input signal 0.2 to 1 bar 4-20 m Impedance ohm Hysteresis 0.5 % Sensitivity - Less than 0.2 % of span mbient temperature operating range -20 to + 80 C -15 to + 65 C Weight 2.8 kg 2.8 kg Dimensions (approx.) in millimetres PP5 Positioner EP5 Positioner C C C Depth Positioner selected is: EP5 % Valve opening 35 With positioner Without positioner % Control signal Step 6 How to order the selected control valve package Example: 11

12 Technical information C C C Single spring actuator Multi-spring actuator Dimensions approximate in millimetres. KE valve bodies Size DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 DN screwed flanged PN5 and PN6 series actuator - single spring (Total weight (kg) valve / actuator) KE71 / C weight weight weight weight weight weight weight KE 71 (kg) KE73 (kg) PN5200 and PN6200 series actuator - multi-spring (Total weight (kg) valve / actuator) KE71 / KE71 / C KE71 (kg) KE73 (kg) KE71 (kg) KE73 (kg) PN5300 and PN6300 series actuator - multi-spring (Total weight (kg) valve / actuator) KE71 / KE71 / C KE71 (kg) KE73 (kg) KE71 (kg) KE73 (kg) PN5400 and PN6400 series actuator - multi-spring (Total weight (kg) valve / actuator) KE71 / KE71 / C KE71 (kg) KE73 (kg) KE71 (kg) KE73 (kg) PN5500 and PN6500 series actuator - multi-spring (Total weight (kg) valve / actuator) KE71 / KE71 / C KE71 (kg) KE73 (kg) KE71 (kg) KE73 (kg) PN5600 and PN6600 series actuator - multi-spring (Total weight (kg) valve / actuator) KE71 / KE71 / C KE71 (kg) KE73 (kg) KE71 (kg) KE73 (kg) KE43 steel / KE63 stainless steel; additional weight (kg) increase KE43 / 43 (kg) KE63 (kg) Typical specification The pneumatic control shall be a DN32 Spirax Sarco KE73 SG iron two port control valve with all stainless steel internals and equal percentage flow characteristics flanged to S 4504 PN25 and coupled to a Spirax Sarco PN5123 actuator. The actuator shall incorporate low profile springs and rolling diaphragm and be designed to provide on site conversion from fail open to fail close operation. n electric to pneumatic EP5 positioner shall be provided with NMUR standard mountings and MPC2 air filter regulator. Some of the products may not be available in certain markets. Spirax-Sarco Limited, Charlton House, Cheltenham, Gloucestershire, GL53 8ER UK. Tel: +44 (0) Fax: +44 (0) enq@spiraxuk.attmail.com Internet: Copyright 1999 Spirax Sarco is a registered trademark of Spirax-Sarco Limited S-S23-01 CH Issue 8

3-port valves. pneumatically actuated

3-port valves. pneumatically actuated 3-port valves pneumatically actuated Pneumatically actuated valves for quality and accuracy in fluid control The Spirax Sarco range of QL valves and pneumatic actuators are designed to give a comprehensive