Spirax Sarco KE71 Threaded Pneumatic Pressure Regulator/Control Valve Proportional Control Valve PN16 2-Way Control Valve

Spirax Sarco Spira-trolTM 2-way control valves are part of the EN standard K and L series with sizes ranging from DN15 to DN100.The valves are 2-way single-seated ball valves with cage fixed seats in accordance with EN standards and are available in four body materials. Characteristic adjustment or on/off control can be realized with pneumatic or electric linear actuators.

• (an official) standardDesigned in accordance with EN 60534 to comply with the requirements of the EU Pressure Equipment Directive / UK Pressure Equipment (Safety) Regulations, with the relevant markings where necessary.

• accreditation: Products can be supplied with EN 10204 3.1 certification, all certification/inspection requirements need to be specified when placing an order.

• Valve Characterization Options

  Available types	characterization	Applicable Scenarios
  KE and LE	Equal percentage (E)	Suitable for most regulated process control applications, providing good control at all flow rates.
  KF and LF	Fast open (F)	For switching applications only.
  KL and LL	Linear (L)	It is mainly used for liquid flow control and is suitable for cases where the pressure difference between the two ends of the valve is constant.

• Valve Options

  • Stem seals: PTFE herringbone seals (P-N), graphite packings (H), bellows/PTFE (B), bellows/graphite (C), and bellows/graphite secondary seals (D) for zero-emission and high-temperature applications.
  • High temperature applications: A wide range of temperatures is available for different needs and pressure ratings. For example, PN25 up to 300°C for zero-discharge, high-temperature applications and thermal fluids; PN25 up to 400°C for zero-discharge, high-temperature applications and thermal fluids; and PN16 up to 300°C with a bellows/graphite secondary seal (D).
  • SeatMetal-to-metal seals, standard in 431 stainless steel, also available in 316L stainless steel; soft seats, PTFE for applications up to 170°C, Class VI shutoff ratings, such as compressed air or water; PEEK (C and P) for up to 220°C, Class VI shutoff ratings; PEEK (K) for up to 250°C, Class VI shutoff ratings; 316L stainless steel case-hardened finish with Stellite TM 6 coating for more severe applications. class; 316L stainless steel case-hardened with Stellite TM 6 coating for more severe applications.
  • Bonnet type: Standard bonnets and extended bonnets for large pipe insulation or hot/cold applications.
  • Valve internals: Standard valve internals and low-noise, anti-cavitation valve internals (see TI-S24-59 for details; not available with reversible PEEK seats (C)).

• Material (DN15 to DN100): Covers a wide range of material options for each component of the valve body, bonnet, stem, seat, etc., as shown in the documentation table.

• Temperature/pressure operating curves: Refer to IM-S24-42 for complete temperature/pressure operating curves.

• Pressure and temperature range

  sports event	particulars
  Nominal pressure	PN16, PN25, PN40, etc. Different connection types and valve body materials correspond to different maximum working pressures.
  Maximum working temperature	Maximum operating temperatures vary with seat material, stem seal material, bonnet type and connection type, e.g. -10 to +300°C for standard bonnets and -10 to +400°C for extended bonnets.
  Maximum saturated steam service pressure	The maximum saturated steam service pressure varies with different valve body materials and connection types, e.g., for PN16 flanged connections, different models correspond to pressures between 12.9 bar g - 14.6 bar g.
  leakage rate	PEEK and PTFE seats are Class VI, metal and Stellite TM seats are available on request up to Class IV (Class V on request), and balanced seats are Class IV.
  characterization	The adjustable ratio is 50 : 1 for equal percentage characteristics, and 30 : 1 and 10 : 1 for linear and fast action characteristics, respectively.
  course (of history)	20 mm for DN15 to DN50 and 30 mm for DN65 to DN100.

• Maximum Differential Pressure (Class IV shutoff ratings - metal seats (T & S) - standard valve internals - under flow): The maximum differential pressure varies for different actuator types (pneumatic, electric), valve sizes, Kv values and stem seal types, as shown in the documentation tables.

• Maximum Differential Pressure (Class VI shutoff ratings - soft seats (P & C) - standard valve internals - under flow): The maximum differential pressure varies for different actuator types (pneumatic, electric), valve sizes, Kv values and stem seal types, as shown in the documentation tables.

weights

Spare Parts

• A wide range of spare parts are available, such as actuator clamping nuts, gasket sets, stem seal kits, valve insert kits, PTFE soft seat seals, and more.
• When ordering spare parts, specify the complete product description of the valve and order according to the description in the "Available Spare Parts" column.

Selection Guide

Valve size, valve series, valve characteristics, flange type, flow rate, valve body material, connection type, stem seal, seat type, valve inner part type, valve inner part balancing method, bonnet type, bolt finish, series Kv value, connection type and other factors need to be considered when selecting the type of valve, specific examples can be found in the document.

Ordering Example

1 off Spirax Sarco Spira-trolTM DN32 KE43PTSUSS.2 Kv 16 2-way control valve with flanged PN40 connection.