Diaphragm type pressure switch
diaphragm pressure switch for low pressure
diaphragm seal pressure switch
pressure switch wiring box
pressure switch wiring terminal

Diaphragm type pressure switch

Diaphragm type pressure switch is a switch which is controled by pressure, it is commonly used in automatic control system . When the pressure value reaches the set point, it will automatically open or close. Pressure switch will restore the original status when the pressure value is lower than the set point.

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Product Description

Feature of Diaphragm type pressure switch:

  • Diaphragm type pressure switch is Suitable for all kinds of industrial sites, can replace the foreign similar products
  • Adopt imported rubber/316L stainless steel diaphragm/piston sensor, stable and reliable performance
  • SPDT or DPDT output; Cast aluminum shell, optional explosion-proof; A variety of pressure and electrical interfaces are optional
  • Simple structure, no disassembly parts
  • Accuracy: 0.5 level; Repeatability: ±1%;
  • Range: 30Pa-40 Mpa Optional

Basic parameter of Diaphragm type pressure switch:

Applicable medium Gas or liquid which has no corrosivity to Nitrile butadiene rubber or 316L stainless steel
Housing Material Die-cast aluminum with epoxy-coating and sealing washer
Housing class Meet the requirements of IEC60529, weather-proof IP67
Setting accuracy ±1%
Dead zone Non-adjustable (refer to the selection table data)
Repeatability error  <1%
Electrical connection M20*1.5 Female, can be on request
Environment temperature -40℃ ～ +85℃
Environment humidity 5%～95%
Service life 10^5 circulation
Anti-knock < Max . 2g
Explosive-proof grade ExedIICT6
Contact rate Vmax=380V，Imax=15A

Please enquiry if have special requirements
Output SPDT (NO,COM, NC)

Order information of Diaphragm type pressure switch

KGSP-K series pressure switch: Nitrile rubber diaphragm and O-ring, process connection: G 1/4F (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP-K -K0010 30～1000Pa ≤30Pa 10 times per minute Nitrile rubber
KGSP-K -K0060 0.5～6KPa ≤0.2KPa 10 times per minute Nitrile rubber
KGSP-K -K0150 1～50KPa ≤0.5KPa 10 times per minute Nitrile rubber

 

KGSP- G series pressure switch: Weld 316L stainless steel diaphragm, process connection: G 1/4F (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP-G0010 30～1000Pa ≤30Pa 10 times per minute 316L
KGSP-G0060 0.5～6KPa ≤0.2KPa 10 times per minute 316L
KGSP-G0150 1～50KPa ≤0.5KPa 10 times per minute 316L

 

KGSP-KM series pressure switch: Nitrile rubber diaphragm and O-ring, process connection: 1/2 NPTF (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP-KM 0160 0.006～0.16MPa ≤0.004MPa 20 times per minute Nitrile rubber
KGSP-KM 0400 0.01～0.4MPa ≤0.02MPa 20 times per minute Nitrile rubber
KGSP-KM 1000 0.02～1.0MPa ≤0.025MPa 20 times per minute Nitrile rubber
KGSP-KM1600 0.05～1.6MPa ≤0.25MPa 20 times per minute Nitrile rubber
KGSP-KM2500 0.05～2.5MPa ≤0.25MPa 20 times per minute Nitrile rubber
KGSP-KM6000 0.3～6MPa ≤0.3MPa 20 times per minute Nitrile rubber
KGSP-KMG100 0.6～10MPa ≤0.4MPa 20 times per minute Nitrile rubber

 

KGSP-GM series pressure switch: Weld 316L stainless steel diaphragm, process connection: 1/2 NPTF (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP -GM0160 0.006～0.16MPa ≤0.004MPa 20 times per minute 316L
KGSP -GM0400 0.01～0.4MPa ≤0.02MPa 20 times per minute 316L
KGSP -GM1000 0.02～1.0MPa ≤0.025MPa 20 times per minute 316L
KGSP -GM1600 0.05～1.6MPa ≤0.25MPa 20 times per minute 316L
KGSP -GM2500 0.05～2.5MPa ≤0.25MPa 20 times per minute 316L
KGSP -GM6000 0.3～6MPa ≤0.3MPa 20 times per minute 316L
KGSP -GMG100 0.6～10MPa ≤0.4MPa 20 times per minute 316L

 

KGSP-GH series pressure switch: 304 Stainless Steel piston, process connection: 1/2 NPTF (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP -GH100 1～10MPa ≤0.4MPa 20 times per minute 304
KGSP -GH160 1～16MPa ≤0.5MPa 20 times per minute 304
KGSP -GH250 2～25MPa ≤0.6MPa 20 times per minute 304
KGSP -GH400 2～40MPa ≤0.8MPa 20 times per minute 304

 

KGSP-KG series pressure switch: Nitrile rubber diaphragm and O-ring, process connection: 1/2 NPTF (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP-KG100 1～10MPa ≤0.4MPa 20 times per minute Nitrile rubber
KGSP -KG160 1～16MPa ≤0.5MPa 20 times per minute Nitrile rubber
KGSP -KG250 2～25MPa ≤0.6MPa 20 times per minute Nitrile rubber
KGSP -KG400 2～40MPa ≤0.8MPa 20 times per minute Nitrile rubber

 

Diaphragm seal type pressure switch

Order information of Diaphragm seal type pressure switch

KGSP-GM series pressure switch: Weld 316L stainless steel diaphragm, can customize process connection)

Model Range Dead zone Switch frequency Sensor material
KGSP-GM0160GL 0.006～0.16MPa ≤0.004MPa 20 times per minute 316L
KGSP -GM1000GL 0.02～1.0MPa ≤0.02MPa 20 times per minute 316L
KGSP -GM2500GL 0.05～2.5MPa ≤0.03MPa 20 times per minute 316L
KGSP -GM6000GL 0.3～6MPa ≤0.035MPa 20 times per minute 316L
KGSP -GMG100GL 1～10MPa ≤0.35MPa 20 times per minute 316L
KGSP -GMG160GL 1～16MPa ≤0.35MPa 20 times per minute 316L
KGSP -GMG250GL 2～25MPa ≤0.6MPa 20 times per minute 316L

Note: If need capillary connection, please indicate the length of capillary; Sensor material can be customized; pressure element can select Diaphragm seal.

 

Diaphragm type Negative pressure switch

Order information of Diaphragm type Negative pressure switch

KGSV-K series pressure switch: Nitrile rubber diaphragm and O-ring, process connection: G 1/4 F (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSV-KK0020 2～0～2KPa ≤30Pa 10 times per minute Nitrile rubber
KGSV-KK0100 10～0～10KPa ≤0.2KPa 10 times per minute Nitrile rubber
KGSV-KM0100 -0.1～0～0.1MPa ≤0.004MPa 20 times per minute Nitrile rubber

 

KGSV-GK series pressure switch: Weld 316L stainless steel diaphragm, process connection: G 1/4F (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSV-GK0020 2～0～2KPa ≤30Pa 10 times per minute 316L
KGSV-GK0100 10～0～10KPa ≤0.2KPa 10 times per minute 316L

 

KGSV-GM series pressure switch: Weld 316L stainless steel diaphragm, process connection: 1/2 NPTF (can customize other type process connection)

Model Range Dead zone Switch frequency Sensor material
KGSV-GM0100 -0.1～0～0.1MPa ≤0.004MPa 20 times per minute 316L

 

Additional option code of pressure switch

E Explosion-proof: Exd IICT6, Temp = -40 ~71℃
D1 DPDT Synchronization option
D2 DPDT asynchronism option
A High contact capacity
B Tag number stainless steel plate
N Special process connection interface (indicate the specification)
M1 Factory sets one alarm point for the switch
M2 Factory sets two alarm points for the switch
Z1 Bracket of flat mounting
Z2 Bracket of “U” tube mounting

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FAQ

Answer : Please send your question or enquiry to our email: sales@hginstrument.com, we will forward the questions to the related engineer.

Answer :  Please communicate with the sales about the return procedure before returning product.

Answer :  The delivery time depends on the order quantity and product specification.  If the product’s specification is conventional ( not special ),  delivery time is 5 or 7 working days for order quantity ≤ 10 pieces;  delivery time is 2 or 3 working weeks for order quantity 15 ~ 30 pieces. 

Answer :  by Courier,  by Sea or by Air

Answer :  Yes,  Generally warranty is one year.

Answer :  From year 2015  to year 2021,  average annual sales is RMB 350 million ( about USD 54.7 million )

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