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ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & P Series (Scotch Yoke) Pneumatic Actuator
ST Series Resilient Seated Butterfly Valve with rack and pinion spring return pneumatic actuator
Spring Return		 ST Series Resilient Seated Butterfly Valve with rack and pinion double acting pneumatic actuator
Double Acting		   Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Up to 1 million cycles
  • Extruded aluminum alloy
  • -4°F to 176°F
  • ISO 5211 w/ female drive
  • 1/4" NPT NAMUR air ports
 
Size P series (Scotch Yoke) Pneumatic Actuator
Spring Return Double Acting
80 PSIG 60 PSIG 80 PSIG 60 PSIG
Fail OPEN Fail CLOSED Price Fail OPEN Fail CLOSED Price
2" HSTWBSC8SO HSTWBSC8SC $ undefined HSTWBSC6SO HSTWBSC6SC $ undefined HSTWBSC8D $ undefined HSTWBSC6D $ undefined
2 1/2" ISTWBSC8SO ISTWBSC8SC $ undefined ISTWBSC6SO ISTWBSC6SC $ undefined ISTWBSC8D $ undefined ISTWBSC6D $ undefined
3" JSTWBSC8SO JSTWBSC8SC $ undefined JSTWBSC6SO JSTWBSC6SC $ undefined JSTWBSC8D $ undefined JSTWBSC6D $ undefined
4" KSTWBSC8SO KSTWBSC8SC $ undefined KSTWBSC6SO KSTWBSC6SC $ undefined KSTWBSC8D $ undefined KSTWBSC6D $ undefined
5" LSTWBSC8SO LSTWBSC8SC $ undefined LSTWBSC6SO LSTWBSC6SC $ undefined LSTWBSC8D $ undefined LSTWBSC6D $ undefined
6" MSTWBSC8SO MSTWBSC8SC $ undefined MSTWBSC6SO MSTWBSC6SC $ undefined MSTWBSC8D $ undefined MSTWBSC6D $ undefined
8" NSTWBSC8SO NSTWBSC8SC $ undefined NSTWBSC6SO NSTWBSC6SC $ undefined NSTWBSC8D $ undefined NSTWBSC6D $ undefined
10" OSTWBSC8SO OSTWBSC8SC $ undefined OSTWBSC6SO OSTWBSC6SC $ undefined OSTWBSC8D $ undefined OSTWBSC6D $ undefined
12" PSTWBSC8SO PSTWBSC8SC $ undefined PSTWBSC6SO PSTWBSC6SC $ undefined PSTWBSC8D $ undefined PSTWBSC6D $ undefined
page 1

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & P Series (Scotch Yoke) Pneumatic Actuator
ST Series Resilient Seated Butterfly Valve with rack and pinion spring return pneumatic actuator
Spring Return		 ST Series Resilient Seated Butterfly Valve with rack and pinion double acting pneumatic actuator
Double Acting		   Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • CISQ cerified
  • Up to 1 million cycles
  • Corrosion resistant aluminum
  • -4°F to 176°F
  • ISO 5211 w/ female drive
  • 1/8" G Threads on air ports
    (adapter available to convert to 1/4" NPT NAMUR air ports
    PN: KBNE0015-R $ )
 
Size P series (Scotch Yoke) Pneumatic Actuator
Spring Return Double Acting
80 PSIG 60 PSIG 80 PSIG 60 PSIG
Fail OPEN Fail CLOSED Price Fail OPEN Fail CLOSED Price
2" HSTWBSP8SO HSTWBSP8SC $ undefined HSTWBSP6SO HSTWBSP6SC $ undefined HSTWBSP8D $ undefined HSTWBSP6D $ undefined
2 1/2" ISTWBSP8SO ISTWBSP8SC $ undefined ISTWBSP6SO ISTWBSP6SC $ undefined ISTWBSP8D $ undefined ISTWBSP6D $ undefined
3" JSTWBSP8SO JSTWBSP8SC $ undefined JSTWBSP6SO JSTWBSP6SC $ undefined JSTWBSP8D $ undefined JSTWBSP6D $ undefined
4" KSTWBSP8SO KSTWBSP8SC $ undefined KSTWBSP6SO KSTWBSP6SC $ undefined KSTWBSP8D $ undefined KSTWBSP6D $ undefined
5" LSTWBSP8SO LSTWBSP8SC $ undefined LSTWBSP6SO LSTWBSP6SC $ undefined LSTWBSP8D $ undefined LSTWBSP6D $ undefined
6" MSTWBSP8SO MSTWBSP8SC $ undefined MSTWBSP6SO MSTWBSP6SC $ undefined MSTWBSP8D $ undefined MSTWBSP6D $ undefined
8" NSTWBSP8SO NSTWBSP8SC $ undefined NSTWBSP6SO NSTWBSP6SC $ undefined NSTWBSP8D $ undefined NSTWBSP6D $ undefined
10" OSTWBSP8SO OSTWBSP8SC $ undefined OSTWBSP6SO OSTWBSP6SC $ undefined OSTWBSP8D $ undefined OSTWBSP6D $ undefined
12" PSTWBSP8SO PSTWBSP8SC $ undefined - - - PSTWBSP8D $ undefined - -
page 2

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & F Series (Rack & Pinion) Pneumatic Actuator
ST Series Resilient Seated Butterfly Valve with rack and pinion spring return pneumatic actuator
Spring Return		 ST Series Resilient Seated Butterfly Valve with rack and pinion double acting pneumatic actuator
Double Acting		   Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Dual stroke adjustment
  • Up to 1 million cycles
  • Polyurethane coated chromated aluminum
  • -4°F to 176°F
  • ISO 5211 w/ female drive
  • 1/4" NPT NAMUR air ports
 
Size F series (Rack & Pinion) Pneumatic Actuator
Spring Return Double Acting
80 PSIG 60 PSIG 80 PSIG 60 PSIG
Fail OPEN Fail CLOSED Price Fail OPEN Fail CLOSED Price
2" HSTWBSF8SO HSTWBSF8SC $ undefined HSTWBSF6SO HSTWBSF6SC $ undefined HSTWBSF8D $ undefined HSTWBSF6D $ undefined
2 1/2" ISTWBSF8SO ISTWBSF8SC $ undefined ISTWBSF6SO ISTWBSF6SC $ undefined ISTWBSF8D $ undefined ISTWBSF6D $ undefined
3" JSTWBSF8SO JSTWBSF8SC $ undefined JSTWBSF6SO JSTWBSF6SC $ undefined JSTWBSF8D $ undefined JSTWBSF6D $ undefined
4" KSTWBSF8SO KSTWBSF8SC $ undefined KSTWBSF6SO KSTWBSF6SC $ undefined KSTWBSF8D $ undefined KSTWBSF6D $ undefined
5" LSTWBSF8SO LSTWBSF8SC $ undefined LSTWBSF6SO LSTWBSF6SC $ undefined LSTWBSF8D $ undefined LSTWBSF6D $ undefined
6" MSTWBSF8SO MSTWBSF8SC $ undefined MSTWBSF6SO MSTWBSF6SC $ undefined MSTWBSF8D $ undefined MSTWBSF6D $ undefined
8" NSTWBSF8SO NSTWBSF8SC $ undefined NSTWBSF6SO NSTWBSF6SC $ undefined NSTWBSF8D $ undefined NSTWBSF6D $ undefined
10" OSTWBSF8SO OSTWBSF8SC $ undefined OSTWBSF6SO OSTWBSF6SC $ undefined OSTWBSF8D $ undefined OSTWBSF6D $ undefined
12" PSTWBSF8SO PSTWBSF8SC $ undefined PSTWBSF6SO PSTWBSF6SC $ undefined PSTWBSF8D $ undefined PSTWBSF6D $ undefined
page 3

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & S4 Series Multi-voltage Weatherproof Electric Actuators
ST Series Resilient Seated Butterfly Valve with industrial duty electric actuator     Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Anti-corrosive polyamide housing
  • -4°F to 158°F
  • ISO 5211 with female drive
  • Single phase motor
  • 75% duty cycle
  • External DIN plugs with PG9 cable gland connectors
  • NEMA 4/4X
 
On/Off Actuator
Size S4 Series Weatherproof Electric Actuator
UNIVERSAL Voltage (24 to 240 VAC or DC)
2" HSTWBSS4UV $ undefined
2 1/2" ISTWBSS4UV $ undefined
3" JSTWBSS4UV $ undefined
4" KSTWBSS4UV $ undefined
5" LSTWBSS4UV $ undefined
6" MSTWBSS4UV $ undefined
8" NSTWBSS4UV $ undefined
 
ST Series Resilient Seated Butterfly Valve with industrial duty electric actuator     Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Anti-corrosive polyamide housing
  • -4°F to 158°F
  • ISO 5211 with female drive
  • Single phase motor
  • 75% duty cycle
  • External DIN plugs with PG9 cable gland connectors
  • NEMA 4/4X
  • Modulating positioner board
 
Modulating Actuator
Size S4 Series Weatherproof Electric Actuator
UNIVERSAL Voltage (24 to 240 VAC or DC)
4-20 mA 0-10 VDC Price
2" HSTWBSS4UV-EP420C HSTWBSS4UV-EP010C $ undefined
2 1/2" ISTWBSS4UV-EP420C ISTWBSS4UV-EP010C $ undefined
3" JSTWBSS4UV-EP420C JSTWBSS4UV-EP010C $ undefined
4" KSTWBSS4UV-EP420C KSTWBSS4UV-EP010C $ undefined
5" LSTWBSS4UV-EP420C LSTWBSS4UV-EP010C $ undefined
6" MSTWBSS4UV-EP420C MSTWBSS4UV-EP010C $ undefined
8" NSTWBSS4UV-EP420C NSTWBSS4UV-EP010C $ undefined
page 4

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & K4 Series Weatherproof Electric Actuators
ST Series Resilient Seated Butterfly Valve with industrial duty electric actuator     Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Aluminum alloy housing
  • 14°F to 131°F
  • ISO 5211 with female drive
  • Single phase motor
  • 75% or 100% duty cycle
  • 1/2" NPT conduit entry with cable gland
  • NEMA 4/4X
  • On/Off or Modulating
 
Size K4 Series 120 VAC Weatherproof Electric Actuator
On/Off Modulating
4-20 mA 0-10 VDC Price
2" HSTWBSK4A $ undefined HSTWBSK4A-EP420C HSTWBSK4A-EP010C $ undefined
2 1/2" ISTWBSK4A $ undefined ISTWBSK4A-EP420C ISTWBSK4A-EP010C $ undefined
3" JSTWBSK4A $ undefined JSTWBSK4A-EP420C JSTWBSK4A-EP010C $ undefined
4" KSTWBSK4A $ undefined KSTWBSK4A-EP420C KSTWBSK4A-EP010C $ undefined
5" LSTWBSK4A $ undefined LSTWBSK4A-EP420C LSTWBSK4A-EP010C $ undefined
6" MSTWBSK4A $ undefined MSTWBSK4A-EP420C MSTWBSK4A-EP010C $ undefined
8" NSTWBSK4A $ undefined NSTWBSK4A-EP420C NSTWBSK4A-EP010C $ undefined
10" OSTWBSK4A $ undefined OSTWBSK4A-EP420C OSTWBSK4A-EP010C $ undefined
12" PSTWBSK4A $ undefined PSTWBSK4A-EP420C PSTWBSK4A-EP010C $ undefined
page 5

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & B7 Series Explosion Proof Electric Actuators
ST Series Resilient Seated Butterfly Valve with heavy-duty explosion proof electric actuator     Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
   Actuator
  • Epoxy powder coated aluminum housing
  • -40°F to 150°F
  • ISO 5211 with female drive shaft
  • Single phase motor
  • 50% duty cycle
  • Two 1/2" NPT conduit entries and internal wiring terminal
  • NEMA 4/4X/7
  • On/Off or Modulating
  • Motor Brake Standard on all On/Off units
 
120 VAC Actuator
Size B7 Series 120 VAC Explosion Proof (NEMA 7) Electric Actuator
On/Off Modulating
4-20 mA 0-10 VDC Price
2" HSTWBSB7A-MB $ undefined HSTWBSB7A-EP420C HSTWBSB7A-EP010C $ undefined
2 1/2" ISTWBSB7A-MB $ undefined ISTWBSB7A-EP420C ISTWBSB7A-EP010C $ undefined
3" JSTWBSB7A-MB $ undefined JSTWBSB7A-EP420C JSTWBSB7A-EP010C $ undefined
4" KSTWBSB7A-MB $ undefined KSTWBSB7A-EP420C KSTWBSB7A-EP010C $ undefined
5" LSTWBSB7A-MB $ undefined LSTWBSB7A-EP420C LSTWBSB7A-EP010C $ undefined
6" MSTWBSB7A-MB $ undefined MSTWBSB7A-EP420C MSTWBSB7A-EP010C $ undefined
8" NSTWBSB7A-MB $ undefined NSTWBSB7A-EP420C NSTWBSB7A-EP010C $ undefined
10" OSTWBSB7A-MB $ undefined OSTWBSB7A-EP420C OSTWBSB7A-EP010C $ undefined
12" PSTWBSB7A-MB $ undefined PSTWBSB7A-EP420C PSTWBSB7A-EP010C $ undefined
 
24 VDC Actuator
Size B7 Series 24 VDC Explosion Proof (NEMA 7) Electric Actuator
On/Off Modulating
4-20 mA 0-10 VDC Price
2" HSTWBSB7B-MB $ undefined HSTWBSB7B-EP420C HSTWBSB7B-EP010C $ undefined
2 1/2" ISTWBSB7B-MB $ undefined ISTWBSB7B-EP420C ISTWBSB7B-EP010C $ undefined
3" JSTWBSB7B-MB $ undefined JSTWBSB7B-EP420C JSTWBSB7B-EP010C $ undefined
4" KSTWBSB7B-MB $ undefined KSTWBSB7B-EP420C KSTWBSB7B-EP010C $ undefined
5" LSTWBSB7B-MB $ undefined LSTWBSB7B-EP420C LSTWBSB7B-EP010C $ undefined
6" MSTWBSB7B-MB $ undefined MSTWBSB7B-EP420C MSTWBSB7B-EP010C $ undefined
8" NSTWBSB7B-MB $ undefined NSTWBSB7B-EP420C NSTWBSB7B-EP010C $ undefined
10" OSTWBSB7B-MB $ undefined OSTWBSB7B-EP420C OSTWBSB7B-EP010C $ undefined
12" PSTWBSB7B-MB $ undefined PSTWBSB7B-EP420C PSTWBSB7B-EP010C $ undefined
page 6

ST Series Wafer Flange,
BUNA Resilient Seated Butterfly Valves - Price List

Effective: Mar-26-2025

Wafer Connections & Manual Operators
ST Series Resilient Seated Butterfly Valve with manual lever operatorST Series Resilient Seated Butterfly Valve with manual geared hand wheel Valve
  • Epoxy Coated Ductile Iron Body
  • 316 Stainless Steel Disc
  • BUNA seat
  • ANSI class 125/150 Wafer flange connections
  • -22 to 230°F
  • 2" to 12": 225 PSIG
    14" to 24": 160 PSIG
 
Size 10 Position Locking Lever Geared Hand Wheel
2" HSTWBSM $ undefined HSTWBSG $ undefined
2 1/2" ISTWBSM $ undefined ISTWBSG $ undefined
3" JSTWBSM $ undefined JSTWBSG $ undefined
4" KSTWBSM $ undefined KSTWBSG $ undefined
5" LSTWBSM $ undefined LSTWBSG $ undefined
6" MSTWBSM $ undefined MSTWBSG $ undefined
8" NSTWBSM $ undefined NSTWBSG $ undefined
10" OSTWBSM $ undefined OSTWBSG $ undefined
12" PSTWBSM $ undefined PSTWBSG $ undefined
 

Spare Parts and Replacement Seals


Spare parts are available...

Call 1-800-899-0553 for pricing or to order