NBR FKM EPDM Replacement Diaphragms For Solenoid Valve
We Mainly do Pneumatic Cylinder, solenoid valve, pneumatic valve, air treatment units, quick connection fittings and PU tube . Our 4V. 3V.2V.2p .solenoid valve ,and 4A.3A Pneumatic valve sell so hot in Asia, Europe,and Middle East. We are popular in pneumatic and Hydraulic market. Our accessories taked from the same supplier as Airtac.
NBR FKM EPDM Replacement Diaphragms For Solenoid Valve
Basic Info:
We Mainly do Pneumatic Cylinder, solenoid valve, pneumatic valve, air treatment units, quick connection fittings and PU tube .
Our 4V. 3V.2V.2p .solenoid valve ,and 4A.3A Pneumatic valve sell so hot in Asia, Europe,and Middle East.
We are popular in pneumatic and Hydraulic market. Our accessories taked from the same supplier as Airtac.
Product Overview
NBR FKM EPDM Replacement Diaphragms For Solenoid Valve is available in NBR, FKM fluororubber and EPDM three materials to meet water, oil, weak acid/alkali and high-low temperature working conditions. It is a core sealing spare part for various water, gas and oil solenoid valves in household appliances, industrial equipment and environmental engineering.
General Specifications
| Parameter | NBR | FKM | EPDM | Remarks |
|---|---|---|---|---|
| Operating Temp. | -10℃ ~ +90℃ | -10℃ ~ +150℃ (max 180℃) | -10℃ ~ +140℃ (max 150℃) | FKM/EPDM for high temp applications |
| Suitable Media | Water, air, light oil, hydraulic oil, natural gas | High-temp oil, steam, solvents, corrosive fluids | Hot water, low-pressure steam, mild acids/alkalis, polar solvents | Select based on media type |
| Hardness (Shore A) | 70 ± 5 | 70 ± 5 | 70 ± 5 | Standard hardness |
| Tensile Strength | ≥ 10 MPa | ≥ 10 MPa | ≥ 10 MPa | High quality rubber |
| Tear Strength | ≥ 35 kN/m | ≥ 35 kN/m | ≥ 35 kN/m | Fatigue resistant |
| Oil Resistance | Excellent | Excellent | Poor (not mineral oil resistant) | Oil media requires NBR or FKM |
| Hot Water/Steam Resistance | Moderate | Good (≤150℃) | Excellent (≤140℃) | Steam choose FKM, hot water choose EPDM |
| Acid/Alkali Resistance | Moderate | Good | Good | Mild acids/alkalis choose EPDM or FKM |
| Aging Resistance | Good | Excellent | Good | Long-term service choose FKM |
| Cost | Economical | Premium | Moderate | General applications choose NBR |
| Compatible Valve Types | Pilot / Direct-acting diaphragm valves | Pilot / Direct-acting diaphragm valves | Pilot / Direct-acting diaphragm valves | Standard diaphragm sizes |
| Working Pressure | 0 ~ 1.0 MPa | 0 ~ 1.0 MPa | 0 ~ 1.0 MPa | Valve dependent |
| Service Life | ≥1 million cycles | ≥1 million cycles | ≥1 million cycles | Standard operating conditions |
Dimensions & Specifications by Size
| Connection (G/NPT) | DN | Valve Dimensions (L×W×H mm) | Cv Value | Max Pressure |
|---|---|---|---|---|
| 1/2" | 15 | 68 × 48 × 125 | 4.5 | 0.03~7.5MPa |
| 3/4" | 15 | 68 × 48 × 125 | 4.5 | 0.03~7.5MPa |
| 1" | 25 | 96 × 70 × 145 | 12 | 0.03~7.5MPa |
| 1¼" | 32 | 150 × 135 × 170 | 25 | 0.03~7.5MPa |
| 1½" | 40 | 160 × 145 × 180 | 31 | 0.03~7.5MPa |
| 2" | 50 | 185 × 155 × 210 | 50 | 0.03~7.5MPa |
Temperature Ratings by Seal Material
| Sealing Material | Temperature Range | Suitable Media |
|---|---|---|
| NBR | -20℃ ~ +80℃ | Air, water, natural gas |
| EPDM | -40℃ ~ +120℃ | Hot water |
| VITON / PTFE | -50℃ ~ +260℃ | Oil, hot water, low-pressure steam |
Specification Selection Table (G1/8" Connection)
| Orifice (mm) | Kv Value (m³/h) | Max Pressure - AC (bar) | Max Pressure - DC (bar) | Brass Model |
|---|---|---|---|---|
| 1.5 | 0.07 | 13 | 11 | STGV1-A3-11X |
| 2.0 | 0.14 | 11 | 9 | STGV1-02-11X |
| 2.5 | 0.21 | 9 | 7 | STGV1-A4-11X |
| 3.0 | 0.25 | 6 | 4 | STGV1-03-11X |
| 4.0 | 0.35 | 3.5 | 2 | STGV1-04-11X |
(X = Seal code: N=NBR, E=EPDM, V=FKM, F=Special material)
Sealing Materials & Temperature Range
| Seal Code | Sealing Material | Fluid Temperature | Suitable Media |
|---|---|---|---|
| X=N | NBR | -20℃ ~ 80℃ | Air, water, natural gas |
| X=E | EPDM | -20℃ ~ 135℃ | Hot water |
| X=V | VITON | -10℃ ~ 155℃ | Hot oil, hot water |
Model & Specification Table (G/NPT Thread Connections)
| Port Size | Orifice (mm) | Flow (Cv) | Pressure Rating |
|---|---|---|---|
| 1/2" | 15 | 4.5 | 0.3~16 Bar |
| 3/4" | 20 | 7.6 | 0.3~16 Bar |
| 1" | 25 | 12 | 0.3~16 Bar |
| 1½" | 40 | 19.2 | 0.3~16 Bar |
| 2" | 50 | 24 | 0.3~16 Bar |
Electrical Specifications
| Voltage | Coil Power | Operating Current | Coil Model | Connection Type |
|---|---|---|---|---|
| AC220V | 9VA | 0.04A | BA11 | Junction box |
| DC24V | 8W | 0.35A | BA11 | Junction box |
| AC110V | 9VA | 0.82A | BA11 | Junction box |
| DC12V | 8W | 1.68A | BA11 | Junction box |
| AC24V | 9VA | 0.375A | BA12 | 300mm lead wires |
| AC36V | 9VA | 0.25A | BA12 | 300mm lead wires |
Quick Selection Guide
| Nominal Diameter | Pipe Size | Recommended Model |
|---|---|---|
| DN10 | 3/8" | 2W-15-31X |
| DN15 | 1/2" | 2W-15-41X |
| DN20 | 3/4" | 2W-20-51X |
| DN25 | 1" | 2W-25-61X |
| DN32 | 1-1/4" | 2W-32-71X |
| DN40 | 1-1/2" | 2W-40-81X |
| DN50 | 2" | 2W-50-91X |
Media & Seal Material Selection
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Selection Tips
1, Voltage Matching: AC220V is for standard mains power; DC24V/12V are better for industrial control, vehicle, and low-voltage systems. Always confirm the coil voltage to avoid burnout. 2,Temperature Limits: The seal material determines the maximum operating temperature. For example, NBR (80°C max) is not suitable for continuous use in hot water above 80°C, as it will degrade and leak. 3,Media Compatibility: Oily media requires VITON seals, as NBR will swell and fail in oil. Steam applications should use VITON or higher-grade seals. 4,Size Consistency: Always match the valve size to your pipe's nominal diameter. Using a smaller valve will restrict flow and shorten its lifespan.
Supplementary Key Points (3 Points Summary)
✅PTFE Seal UpgradePTFE sealing is newly upgraded, with temperature resistance up to 260℃, excellent resistance to strong acid, alkali and organic solvents, ideal for chemical and high-temperature steam working conditions.
✅Dual Power OptionsIt provides dual power specifications: 22VA/30VA for AC and 17W/24W for DC, matching different coil types and adaptable to customers' various power load requirements.
✅Model Code RuleThe letter X in the model stands for sealing material code: N=NBR, E=EPDM, V=VITON; just replace it directly when ordering.
Our Advantages:
✅NBR (Nitrile Rubber) – Excellent oil resistance with operating temperature from -10℃ to +90℃. Wear-resistant and cost-effective – the first choice for water, air, and oil media .
✅FKM (Fluorocarbon Rubber/Viton) – High temperature and corrosion resistant with operating temperature from -10℃ to +150℃ (max 180℃). Excellent resistance to oils, solvents, and chemicals – suitable for high-temperature oil, steam, and corrosive media .
✅EPDM (Ethylene Propylene Diene Monomer) – Hot water and steam resistant with operating temperature from -10℃ to +140℃ (max 150℃). Excellent resistance to polar solvents and mild acids/alkalis – the dedicated choice for hot water and low-pressure steam applications |
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Tips:
1. Your inquiry related to our products or prices will be replied in 24 hours
2. Well-trained and experienced staffs to answer all your inquiries in fluent English.
3. OEM&ODM, any your customized lightings we can help your to design and put into product.
4. Distributorship is offered for your unique design and some our current models.
5. Protect your sales area, ideas of design and all your private information.
When selecting a stainless steel pneumatic air gripper cylinder, consider factors such as gripping force, stroke length, operating pressure, compatibility with the object size and weight, and the specific environmental conditions of your application. It is advisable to consult the manufacturer's specifications and guidelines to ensure the proper selection, installation, and operation of the gripper cylinder for your specific requirements.
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