D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve
Product Specifications
- Size
- Pressure Range
Contact Supplier
Product Highlights
- Customizable Set Pressure: Pressure range 10-40bar with customized set pressure available.
- 100% Pressure Testing: Each valve undergoes individual pressure and leakage testing before shipment.
- High Precision CNC Machining: Disc, seat, spindle, and body processed with high precision CNC machining.
- Durable All-Metal Structure: All-metal construction ensures long lifespan in harsh environments.
- Flexible Connection Options: Threaded connections available in NPT, BSP, G, or customized types.
- Versatile Sealing Materials: Options include FKM, PTFE, RPTFE, EPDM, and Metal-to-Metal seals.
- Wide Application Range: Suitable for boilers, HVAC, water pipelines, and various media like steam and gas.
- Professional R&D Support: Custom sketches and reasonable suggestions provided based on customer requirements.
Product Attributes
- Customization
- Available
- Media
- Water
- Standard
- G
- Model NO.
- BSVBJ303-DN20
- Temperature
- Reference Sealing
- Connection
- Thread
- Pressure
- Adjustable
- Closed
- Closed
- Structure
- Spring
- Material
- Brass
- Applications
- Boilers, HVAC, Water Pipelines
- Pressure Range
- 10~40bar, Customized Set Pressure Available
- Temperature Range
- Reference Sealing
- Working Medium
- Air, Water, Steam, Gas
- Lever
- Q235
- Transport Package
- Normal or OEM
- Specification
- DN20
- Trademark
- D&R or OEM
- Origin
- China
- Production Capacity
- 500000 Pieces/Year
- Package Size
- 17.00cm * 5.00cm * 5.00cm
- Package Gross Weight
- 0.500kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve
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D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve -
D&R China Made Automatic DN20 Pressure Safety Valve Adjustable, Industrial Steam Safety Release Valve
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Product Description
Product Description
Materials & Construction
1. Cap - Brass
2. Adjust Screw - Brass
3. Nut - Brass
2. Adjust Screw - Brass
3. Nut - Brass
4. Spindle - Brass
5. Spring - 55CrSi
6. Valve Body - Brass
7. Spring Seat - Brass
8. Disc - Brass
5. Spring - 55CrSi
6. Valve Body - Brass
7. Spring Seat - Brass
8. Disc - Brass
9. Valve Seat - Brass
---------
D&R Brass (Bypass) Safety Relief Valve —— BSVBJ303
Sealing Options & Temperature Range ↓
Sealing | Temperature Range (Reference) | Features (Reference) |
FKM | -30 ~ 180℃ | Oil, gas, chemical media |
PTFE | -60 ~ 170℃ | Strong chemical resistance |
RPTFE | -60 ~ 220℃ | High-temp stability |
EPDM | -40 ~ 110℃ | Hot water, HVAC systems |
Metal-to-Metal | Higher | Long life |
Working Principle
· System pressure acts on the disc from the inlet side.
· The pre-compressed spring keeps the disc tightly sealed under normal operation.
· When pressure reaches the set point, upward force overcomes spring force and the disc pops open instantly.
· High-velocity discharge stabilizes the valve in a full-open position for rapid pressure release.
· As pressure drops below the reseat point, the spring pushes the disc back to the seat for a tight, leak-free seal.
· The pre-compressed spring keeps the disc tightly sealed under normal operation.
· When pressure reaches the set point, upward force overcomes spring force and the disc pops open instantly.
· High-velocity discharge stabilizes the valve in a full-open position for rapid pressure release.
· As pressure drops below the reseat point, the spring pushes the disc back to the seat for a tight, leak-free seal.
Specification
Dimension
The dimensions shown are based on D&R sample test data and are for reference only.
Final specifications can be customized and calculated according to your actual requirements.
Unit: mm
Final specifications can be customized and calculated according to your actual requirements.
Unit: mm
Inlet | d | Outlet | Lift | L1 | L2 | H |
1/2" | 13 | 1/2" | 0.5 | 30.5 | 46 | 157 |
3/4" | 19 | 3/4" | 0.7 | 35 | 54 | 169.5 |
1" | 25 | 1" | 0.9 | 40.5 | 66.5 | 200 |
1 1/4" | 32 | 1 1/4" | 1.2 | 50 | 73.5 | 216 |
1 1/2" | 38 | 1 1/2" | 1.4 | 59 | 86 | 243.5 |
2" | 50 | 2" | 1.8 | 65 | 95.5 | 281.5 |
Size Range | DN15~50 |
Pressure Range | 10~40bar (Customized set pressure available) |
Connection Type | Threaded (NPT / BSP / G / Customized) |
Temperature Range | Reference Sealing Options |
Applications | Air, water, steam, etc. |
Testing | 100% pressure & leakage tested before shipment |
Related Products
Brass (Bypass) Safety Relief Valve
Engineered for reliable over-pressure protection in boilers, HVAC, and pipeline systems.
Brass Adjustable Safety Relief Valve, Pop-Action Pressure Relief Valve for Boiler, Compressor, Pipeline Systems
Offered in various materials and design options to suit different
media, temperatures, and pressure conditions
—— tailored solutions available to enhance system safety and reliability.
√ 100% Pressure Set-Point Calibration
Each valve is tested individually for accuracy.
Each valve is tested individually for accuracy.
√ Full CNC Machining
Disc, seat, spindle, and body processed with high precision.
Disc, seat, spindle, and body processed with high precision.
√ High Durability
All-metal structure, no soft seal, long lifespan in harsh environments.
All-metal structure, no soft seal, long lifespan in harsh environments.
√ Customizable
Set pressure, connection type, and lever style can be customized.
Set pressure, connection type, and lever style can be customized.
Company Profile
FAQ
Q1. Are you factory or trader?
We have our own brass products factory and are able to supply brass valves, fittings, custom parts, braided hoses, stainless steel valves, PVC valves, welding machines, welding heads. We have an average production capacity of 1.5 million pieces per month. And welcome visits to our factory at any time.
Q2. How do you ensure that your products are reliable?
From the inspection of raw materials, and the inspection during the production process: to 100% pressure test, appearance inspection, finished product size measurement, we will do inspection reports, take inspection and boxing video and photos. Also we support online inspection. The information will be sent to you before delivery. If you have a certificate request, we can cooperate with you to apply for the certificate according to your requirements and accept third party inspection.
Q3. Do you have your own R&D team?
Of course we have. We can draw sketches according to the customer's requirements and make reasonable suggestions. And we manufacture hundreds of customized products for our customers every year.
Q4. Do you provide samples?
Yes, we are very happy to provide you with samples, especially your customized products.
Q5. Can you accept mixed payments?
Yes, we are happy to provide you with more convenient services.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR243168". Items marked "
" are certified.
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Company Profile
D&R METAL, a professional manufacturer & exporter of Brass Products to the global market since the year of 2002. We specialized in valves, fittings, distribution manifolds, bibcock taps, showers, toilet connector hoses, and customized metal parts. Furthermore, based on the trust and needs of our customers, we have also developed production lines of welding machines, and PPR, PVC, Zinc alloy, and Alu products.
We support a one-stop-shop solution for your all design, engineering, manufacturing, testing, and a variety of precision products and assemblies. We have vast and deep experience in the metal parts industry. Thus, from the selection of materials and configurations to the parameter standards of the application field, our products always meet the international quality standards and great customer satisfaction.
You may not have noticed that when you work with us at D&R Metal, you are making an unconscious commitment to yourself to value what you and your company are doing to better serve your customers. Through this way, we become your partner and working with D&R Metal is a commitment, more than a commitment to deliver at the highest level. We have seen thousands of clients grow from small distributors to industry giants in their local markets. You can purchase our standard brass valves & fittings or send us your drawing or idea to custom your products. We hope to be a part of your success!
About Our Factory & Business Background
- Address
- F12, Shanshan Plaza, Ningbo, Zhejiang, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DDP, Others
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- NINGBO, SHANGHAI
Our Production Capability & Technical Expertise
- Main Products
- Ball Valve, Fitting, Brass Valve, Bibcock, Machining Metal Parts, PVC Valve, Zinc Valve, Shower Hose, Flexible Hose
Our Industry Experience & Global Business Record
- Export Year
- 2002-01-08
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Mid East, Eastern Asia, Western Europe
FAQ
- Are you a factory or trader?
- We have our own brass products factory and are able to supply brass valves, fittings, custom parts, braided hoses, stainless steel valves, PVC valves, welding machines, welding heads. We have an average production capacity of 1.5 million pieces per month. And welcome visits to our factory at any time.
- How do you ensure that your products are reliable?
- From the inspection of raw materials, and the inspection during the production process: to 100% pressure test, appearance inspection, finished product size measurement, we will do inspection reports, take inspection and boxing video and photos. Also we support online inspection. The information will be sent to you before delivery. If you have a certificate request, we can cooperate with you to apply for the certificate according to your requirements and accept third party inspection.
- Do you have your own R&D team?
- Of course we have. We can draw sketches according to the customer's requirements and make reasonable suggestions. And we manufacture hundreds of customized products for our customers every year.
- Do you provide samples?
- Yes, we are very happy to provide you with samples, especially your customized products.
- Can you accept mixed payments?
- Yes, we are happy to provide you with more convenient services.
Send your message to this supplier
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