Pneumatics and Fittings

MK-3000, MK-7100 Series

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Product Bar End

MK-3000, MK-7100 Series

Pneumatic Damper Actuators MK-3000, MK-7100 Series

Pneumatic Damper Actuators


The Schneider Electric MK-3000, MK-7100 Series pneumatic actuators provide damper control for 3-8, 5-10, and 8-13 psig (21-55, 34-69, and 55-90 kPa) pressure ranges. The MK-3000 has a 3.5″ (8.9 cm) nominal stroke and is adjustable 2″ to 4″ (5.1 to 10.2 cm) for smaller applications such as zone dampers and VAV boxes. The MK-7100 has a 4.5″ (11.4 cm) nominal stroke and is adjustable 4″ to 5″ (10.2 to 12.7 cm) for larger applications such as air handler dampers.


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QtyModelDescriptionIn StockList PriceInternet Price
MK-3101 PNEU DPR ACT 3-8SPR 21LB/IN INFO305.00244.00
MK-3111 PNEU DPR ACT 5-10SPR 21LB/IN INFO375.00300.00
MK-3121 PNEU DPR ACT 8-13# In Stock305.00244.00
MK-4801 PNEU VAL ACT 11INSQ 3-8 INFO417.00333.60
MK-4811 ACTUATOR INFO417.00333.60
MK-4821 PNEU VAL ACT 11SQ.IN 8-13SPR INFO417.00333.60
MK-6611 50 SQ IN 5-10 PNEU VALVE ACTUATOR INFO722.00577.60
MK-6801 PNEU ACTUATOR 50 SQ IN 3-8# INFO722.00577.60
MK-7101 PNEU DPR ACT 20 SQ IN 3-8# INFO925.00740.00
MK-7121 PNEU DPR ACT 20 SQ IN 8-13# INFO925.00740.00
MK-8801 PVAL ACT 100INSQ 1INSTROKE INFO2,444.001,955.20
MK-8811 PVAL ACT 100INSQ 5-10SPR 1INSTRK INFO2,444.001,955.20
MK-8821 PVAL ACT 100INSQ 8-13SPR 1INSTRK INFO2,444.001,955.20
MK-8901 PVAL ACT 100INSQ 3-8SPR 2INSTRK INFO2,507.002,005.60
MK-8911 PVAL ACT 100INSQ 5-10SPR 2INSTRK INFO2,507.002,005.60
MK-8921 PVAL ACT 100INSQ 8-13SPR 2INSTRK INFO2,507.002,005.60
MK4-3121 PNEUM ACTUATOR 8-13SPRING INFO666.00532.80
MK4-7121 8-13# PNEU. ACTUATOR W/POS. INFO1,175.00940.00


No accessories found

Connections:1/8" NPT

Diaphragm:Beaded, molded neoprene

Operating Temperature:-20° to 160℉ (-29° to 71℃)

Mounting:Any position

Maximum Pressure Rating:30 psig (207 kPa)


 :MK-3000 12.0"H x 5.9"W x 5.5"L (30.5 x 14.9 x 14.0 cm)

 :MK-7100 17.6"H x 7.8"W x 7.6"L (44.8 x 19.7 x 19.4 cm)


 :MK-3000 5.0 lb (2.2 kg) to 5.5 lb (2.5 kg)

 :MK-7100 15.0 lb (6.8 kg) to 15.5 lb (7.1 kg)

Warranty:1 year