Spirax Sarco's STERI-TROL 'S' series are 316L stainless steel, two-port and three-port control valves. They are designed for mixing/diverting fluids (three-port only), and for on/off and modulating control of clean steam, pure steam and process fluids. The valve is operated by a pneumatic actuator and may be interfaced with a control system using any of the Spirax Sarco range of positioners. These STERI-TROL Valves are available from 1/2" up to 4" with the following options to choose from.

Available Types:
• SA - Two-Port Angle Pattern
• SH - Two-Port Horizontal Pattern
• SQ - Three-Port Design

Valve Options:
• SA Series
• Equal Percentage - Suitable for most modulating process control applications good, good control at low flow rates
• Linear - Primarily for liquid flow control where the differential pressure across the valve is constant
• SH Series
• Equal Percentage - Suitable for most modulating process control applications good, good control at low flow rates
• Linear - Primarily for liquid flow control where the differential pressure across the valve is constant
• SQ Series
• Linear - Primarily for liquid flow control where the differential pressure across the valve is constant

Valve Seats:
• Metal to Metal (Standard) - Stainless Steel
• Soft Seal - White Viton for tight shut-off

Valve Stem Sealing:
• EPDM (Standard) - FDA and 3A Approved
• White Viton - FDA, 3A and USP 26 Class VI Approved

End Connections:
• Buttweld
• DIN 11850 (Series 2)
• ISO 2037 / SMS 3008
• EN ISO 1127
• BS 4825 (Pt 1)
• ASME BPE
• Sanitary Clamp
• ASME BPE (Tri-Clamp®)
• BS 4825 (Pt 3)
• ISO 2852
• DIN 32676
• Flanged
• ANSI 150 - ANSI B 16.5
• PN16 - DIN 2633
• EN 1092 PN6
• EN 1092 PN10
• EN 1092 PN16
• Aseptic Thread (fitted on pipe)
• DIN 11864 TI Form A
• DIN 11864 TI Form B
• DIN 11887 (11851)
• SMS3008
• Aseptic Clamp and Nut
• DIN 11864 T1 Form A
• DIN 11864 T1 Form B
• Screwed Connection
• DIN ISO 228
• NPT ANSI-BI.20.1-1983

Compatible Actuators & Positioners:
Electric -
• EL3500 Series
• EL5600 Series
Pneumatic -
• PNS3000
• PNS4000
• PN9000E
• PN9000R Series
Positioners -
• PP5 (pneumatic)
• EP5 (electropneumatic)
• ISP5 (intrinsically safe electropneumatic)
• SP200 (smart electropneumatic)
• SP300

Available C_v K_v Values:

Kv Values (SA and SH Models)
Flow Characteristic	Valve Size	1/2" (DN15)	3/4" (DN20)	1" (DN25)	1-1/4" (DN32)	1-1/2" (DN40)	2" (DN50)	2-1/2" (DN65)	3" (DN80)	4" (DN100)
	Travel	3/4" (20mm)						1-3/16" (30mm)
Equal Percentage & Linear Trim	Standard	4.7 (4)	7.4 (6.3)	12 (10)	19 (16)	29 (25)	42 (36)	74 (63)	117 (100)	187 (160)
	Reduction 1	-	4.7 (4)	7.4 (6.3)	12 (10)	19 (16)	29 (25)	42 (36)	74 (63)	117 (100)
	Reduction 2	-	-	4.7 (4)	7.4 (6.3)	12 (10)	19 (16)	29 (25)	42 (36)	74 (63)
	Reduction 3	-	-	-	4.7 (4)	7.4 (6.3)	12 (10)	19 (16)	29 (25)	42 (36)





Kv Values (SQ Model)
Flow Characteristic	Valve Size	1/2" (DN15)	3/4" (DN20)	1" (DN25)	1-1/4" (DN32)	1-1/2" (DN40)	2" (DN50)	2-1/2" (DN65)	3" (DN80)	4" (DN100)
	Travel	3/4" (20mm)						1-3/16" (30mm)
Equal Percentage & Linear Trim	Standard	4.7 (4)	7.4 (6.3)	12 (10)	19 (16)	29 (25)	42 (36)	74 (63)	117 (100)	187 (160)





Micro-flow Trim for SA & SH Series Valves <= 1" (DN25)
Micro-Flow Trim	Travel	3/4" (20mm)
	Trim Size	1/8"	3/16"	1/4"	1/4"	3/8"
Linear Characteristics	Cv (Kvs)	.47 (0.4)	.74 (.63)	1.17 (1.0)	1.9 (1.6)	2.9 (2.5)