The SMF08 switches are fixed set point, factory calibrated pressure switches. It is automatic reset, and can be Normally open or normally close contacts. All metallic wetted components make the SMF08 switch compatible with a multitude of chemicals in liquid or gas form.
It is offered numerous types of electrical terminations from different size and style push on terminals to wire leads with an array of standard industry connectors.
In house machining capabilities allows to offer a wide variety of pressure fitting from different thread types and sizes to units with internal deflator and cupper tubbing for sawing operations.
Typical application:
| Air conditioning units (residential, commercial and automotive)
Refrigeration
CO2 Air conditioning, CO2 Refrigeration
Heat Pumps
High pressure cut off ,Low pressure cut off
Air brakes (trucks and commercial equipment)
Fuel pressure monitoring
Engine controls
Agricultural equipment
Industrial controls
Marine engine / equipment.
| Series No. | SMF08 | | Medium | Air, Water, motor oils, transmission oils, Hydrocarbon Media, Refrigeration fluid | | Pressure Set Point | actuation from 0.2 to 45 Bar | | Proof Pressure | 45 Bar | | Burst Pressure | 100 Bar | | Operating Temperature Range | -30° C to ~ 80° C | | Switch Type | SPST- NC, SPST-NO Auto reset and Manual reset | | Electric Rating | 120/240VAC, 375VA 120VAC,5.8FLA-34.8LRA;240VAC,2.9FLA-15LRA 24VAC/DC, 2A | | Dielectric Strength | 750 Vrms across open contacts
1550 Vrms terminals to fitting | | Terminals | 1/4” blade, wire lead | | Life at Related Load | 100,000 cycles | | Connection | 1/8NPT, G1/8", 1/4NPT, G1/4", 7/16-20 UNF, etc. | | Options | various connector thread sizes; wire leads (potted & sealed); protective cover. | | Approval | UL, CUL | | |
Why choose us
1: High quality with competitive price .
2: Sample order & small quantity order is acceptable .
3: Customize according to your special request .
4: Reliable quality assured and active after-sell service
5: Various style for each products and completely series pneumatic products .
Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years and professional to make . But you need give us the authorization if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point | High Temperature Environment Countermeasures | Extreme Cold Environment Countermeasures |
| Seals | Fluororubber, PTFE | Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication | High-temperature synthetic grease (low volatility) | Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment | Strengthen cooling, efficient water removal | Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components | Reserve expansion clearance | Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components | High heat-resistant grade coils, heat dissipation, low power consumption | Install insulation boxes, local heating, prevent cold condensation |
| Installation | Keep away from heat sources, add heat insulation plates | Avoid exposure to wind and snow, wrap with thermal insulation materials |
