The Spirax Sarco KE73 is a rugged two-port single-seat globe control valve from the Spira-trol™ K series, featuring an SG iron body and cage-retained seat design. It offers reliable modulating or on/off control when paired with pneumatic or electric actuators, with a focus on durability in steam and fluid systems up to PN16 or PN25 pressures.

• Cage-retained seat for easy maintenance and consistent performance.
• SG iron body provides good strength and corrosion resistance for many applications.
• Available in flanged PN16 or PN25 connections (and JIS/KS10 in some sizes).
• Modular design reduces spare parts needs across the K series range.
• Equal percentage, linear, or fast-acting trim options for flexible flow characteristics.
• Supports bellows sealed versions for zero emissions in critical setups.
• Compatible with Spirax Sarco actuators for precise positioning.

Body Material: SG iron (EN-GJS-400-18U-LT). Sizes: DN15 to DN100 (½" to 4") typical for smaller KE73; larger sizes up to DN300 in extended K series. Connections: Flanged PN16, PN25; JIS/KS10 (some sizes); screwed BSP up to DN50. Pressure/Temperature Limits (KE73 SG iron):

• PN16: Up to 16 bar g at 120°C (saturated steam ~12.9 bar g).
• PN25: Up to 25 bar g at 120°C (saturated steam ~22.5 bar g).
• Max temperature varies by seat: PEEK insert up to 220–250°C; Stellite/metal up to 400°C; PTFE up to 170°C. Leakage: Class IV (metal-to-metal) or Class VI (soft seats like PEEK/PTFE). Characteristic: Equal %, linear, or fast-acting. Rangeability: Typically 50:1 (equal %), 30:1 (linear), 10:1 (fast-acting). Travel: 20 mm (DN15–DN50), 30 mm (DN65–DN100). Seat Materials: PEEK, PTFE, Stellite 6, or 316L options.

Commonly used for steam pressure/temperature control, water regulation, and process fluids in heating systems, heat exchangers, boilers, and industrial plants where reliable throttling or isolation is needed under moderate pressures.

Q: What body material makes the KE73 suitable for steam? A: SG iron offers solid performance for saturated steam up to the rated limits.

Q: Can it handle higher temperatures? A: Yes, with Stellite or metal seats up to 400°C, but check bellows limits if used.

Q: Is leakage tight? A: Metal seats meet Class IV; soft seats like PEEK can achieve Class VI.

Q: What trim characteristics are available? A: Equal percentage for most modulating needs, plus linear and fast-acting options.

Q: Does it work with electric actuators? A: Yes, pairs well with Spirax Sarco electric linear actuators like AEL series.

Email: tracychen@gbsxj.com ; tracy@gongboshi.com

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Consider the KE43 (carbon steel) or KE63 (stainless steel) for different body materials, or the larger K series (DN125+) for higher flows.

Product Packaging:

Our Pneumatic Control Valves are carefully packaged to ensure safe delivery. Each valve is wrapped in protective foam and placed in a sturdy cardboard box to prevent any damage during transit.

Shipping:

We offer fast and reliable shipping for all orders of our Pneumatic Control Valves. Orders are typically processed within 1-2 business days and shipped using trusted carriers to ensure timely delivery to your doorstep.