This brass hydraulic safety valve combines overpressure protection, pressure regulation, and system venting in a single unit. It streamlines the pipe layout nicely. It has a red knob that does two jobs: setting the valve’s pressure and manual venting. You can precisely adjust the pressure relief level to match your system’s needs. It’s a small, all-in-one safety part, widely used for small industrial hydraulic systems and home wall-hung boiler heating systems.
This Angle Type Safety Valve is a dedicated safety protection component engineered for heating and small boiler systems. Integrating overpressure protection, system venting, and impurity discharge in a single unit. Its 90°-angled flow path design is ideally suited for installation in tight spaces, at corners, or alongside equipment. The valve allows pressure threshold calibration to meet specific system requirements. Enables the regular discharge of impurities accumulated in the pipeline to maintain sustained system performance.
Model No.: JX-0981
Size: DN20
Material: CW617N, CW511L
Max allowable temperature: 85 ° C
Opening Pressure: 7 bar
Connection Method: 3/4″ internal/external three
Max Pressure Resistance: 10 bar
Max Temperature Resistance: 120°C
Standard: ACS, NF
The load break must remain free of obstruction
The drain should always be oriented downwards
Water heater safety group
This Water Heater Safety Group combines a safety valve, a pressure-regulating valve, an automatic air release valve, and a drain outlet into a single unit. It handles overpressure relief, pressure regulation, air venting, and impurity drainage simultaneously for water heater systems. The green knob adjusts the safety valve’s set pressure. It meets the pressure safety needs of different water heater models. All connections use universal specs. You can pair them directly with water heaters or heating pipelines, making installation easy.
Model No.: JX-0991
Size: 3/4″
Material: CW617N and CW511L brass
Stainless steel body
Teflon coating on body surfaces in contact with water
Media: Hot/cold water
8 bar inlet and 3 bar outlet
Working temperature: 10℃-60℃
Close differential pressure: 0.18~0.22MPa
Standard: ASC, NF
Brass Boiler Safety Valve
This brass boiler safety valve is a core component for boiler and heating system safety. Featuring a built-in spring-loaded valve core. It automatically opens to relieve pressure when the system pressure exceeds the preset threshold. Its top red knob allows manual adjustment of the valve’s set pressure to meet the pressure-safety requirements of different boilers or heating systems. It is widely used in small industrial boilers, domestic wall-hung boilers, hot water boilers, and other similar systems.
Model No.: JX-0928
Size: 1/2″-1″
Material: CW617N
Max temperature: 110°C
Set Pressure (PN): 3.0 or 7.0 bar
With a rotating plastic cap
Working pressure: 1.6 MPa
End Connection: G thead
Thread standard: ISO228
Application: Cooling/Heating System and HVAC System
Bronze Safety Relief Valve
This bronze safety relief valve features a built-in spring-loaded valve core that automatically opens to relieve pressure. Its top-mounted handle enables manual pressure relief actuation. Designed for regular functional testing of the valve to ensure reliable operation at all times. It is an essential safety protection component for a wide range of industrial applications.
Model No.: JX-0922
Material: Bronze
Size: DN15, DN20
Media: No corrosive gases, air, steam
Medium temperature: -45 -185 ℃
Thread connection: BSPT
Max pressure: 1.6MPa
Soft seal: PTFE
Standard: ISO 9001
Spring material: Steel
Suitable for screw air compressors
Tamper-resistant dome (SRV)
Adjustable Pressure Relief Valve
This adjustable pressure relief valve has a black knob on top that allows manual adjustment of spring pressure, enabling precise adaptation to the pressure safety requirements of various boilers and water heaters. It’s made with a one-piece cast brass body. The valve has a 90° angled design. It is ideal for installation in tight spaces adjacent to equipment and is widely used for domestic wall-hung boilers, electric water heaters, small hot water boilers, and other similar systems.
Model No.: JX-0935
Size: 1/2″
Materials: CW617N, Lead-free brass
Finishing: Sand blasted and nickel-plated
Thread connection: BSP, NPT
Max working pressure: 10bar
Max temperature: 115°C
Spring material: Stainless steel 304
Core material: Brass
ABS Cap
Handwheel in POLYAMIDE PA66 (Nylon 66)
Vacuum Breaker
This vacuum breaker is used to protect piping systems from negative pressure. When negative pressure occurs in the pipeline, the valve opens automatically and lets outside air in. This breaks the vacuum and helps prevent trap seal siphoning, backflow of media, and sewer gas returning into the system. It can be installed directly at pipe ends or at key points in the system. The valve is commonly used in water supply and drainage lines, high-rise buildings, fire protection systems, HVAC circulation systems, and similar applications.
Material: Brass
Size: 3/4″
Finishing: Chrome-plated
Neoprene seat disc
Rubber washer
Prevent outsider debris from entering the drinking water
Max working pressure: 125psi
Max working temperature: 180 degrees F
Backflow preventer for most standard hoses and end valves
Standard: ANSI
FAQs of Brass Hydraulic Safety Valve
1. What’s the difference between a safety valve and a relief valve?
Safety Valve
A safety valve is the ultimate pressure protection device designed for emergency overpressure conditions. It opens automatically when the system pressure exceeds the maximum allowable limit to prevent catastrophic equipment failure and safety incidents.
Relief Valve
A relief valve is a pressure control component used under normal operating conditions to regulate system pressure and unload excess flow, especially in constant-displacement pump hydraulic systems.
From HardHat Engineer
2. Is a stainless steel hydraulic safety valve available?
Of course. In addition to brass hydraulic safety valves, Plumberstar also provides stainless steel hydraulic safety valve solutions.
For applications with higher medium compatibility requirements, we use 304/316 stainless steel to make the valve body and core pressure-bearing parts. Stainless steel outperforms brass in acid and alkali resistance, medium corrosion resistance, and long-term stability. It’s especially suitable for hydraulic systems with slightly corrosive media.
In terms of performance consistency, the stainless steel hydraulic safety valve matches the brass one in opening pressure, interface specifications, and opening-closing characteristics. This lets you switch materials for different working conditions without re-adjusting the system design. We can also customize the interface type to fit your existing pipeline standards and your actual needs.
What’s more, we can provide a complete stainless steel Material Test Certificate as you require.
3. Can you provide MTC for the brass hydraulic safety valve?
Plumberstar can provide complete, traceable MTCs for brass hydraulic safety valves. The certificate content meets international general standards like ASTM and EN. It satisfies the compliance requirements of engineering projects and overseas markets.
The MTC clearly states the grade of brass raw material used. It includes chemical composition test data—such as the content of key elements like copper, zinc, and lead—and mechanical property indicators. The certificate also fully records the raw material batch number, production furnace number, testing standard basis, and testing date. It’s signed by authorized inspectors and affixed with an inspection seal. This enables full-process traceability of material information, from raw materials to finished products.
All MTC certificates are included in the shipment package. This makes it easy for you to do receipt inspection, project filing, and quality audits.
We can also customize different MTC versions based on your target market and project specification requirements.
4. Can the hydraulic safety valve’s pressure be factory-set?
We can pre-set the opening pressure of safety valves at the factory. This lets you install and use the products right away when they arrive on site, cutting down commissioning risks.
You just need to provide the exact opening pressure value your system needs. We’ll check whether the pressure setting is reasonable based on your actual application conditions—such as boiler type, system pressure range, and the medium used. We make sure it meets your usage needs while maintaining sufficient safety redundancy.
The pressure setting is done by our technicians with over 10 years of commissioning experience. They work on Plumberstar’s professional dust-free hydraulic test benches. During commissioning, we use digital precision pressure gauges for real-time monitoring. We pressurize the spring slowly and adjust it precisely, so the safety valve opens stably and accurately at the set pressure point.
After calibration, we seal the valve with a lead seal or a tamper-proof protective cap. This stops anyone from manually adjusting the parameters during transportation and before installation. It ensures the product parameters you receive are consistent and traceable.
For large-volume orders or projects with special compliance requirements, we can provide factory-pressured calibration certificates in batches. This makes it easier for you to do project acceptance, filing, and quality management.
brass hydraulic safety valve
5. Can we order small-batch evaluation samples of hydraulic safety valves?
You just need to provide the valve technical parameters for evaluation. These include pressure setting values, material choice (brass/stainless steel), interface size, and specific application conditions.
We’ll produce this batch of samples in strict accordance with mass-production standards. Same raw materials, same equipment, same processes. This ensures the trial order matches the subsequent bulk goods in terms of structure, performance, and quality.
All small-batch samples go through 100% pressure testing, too. We can also provide the corresponding batch’s Material Test Certificate (MTC) and pressure test report. Once the samples are ready, we’ll send them to your designated address by international courier.
We value your feedback on usage a lot. Whether it’s recognition or improvement suggestions, they’re all important for us. They’re the basis for us to keep optimizing products and improving service capabilities.
6. Can the hydraulic safety valve provide CE marking and the corresponding conformity declaration?
Plumberstar hydraulic safety valves can provide complete CE certification and declarations of conformity. Our products meet relevant EU directives and harmonized standards, satisfying the access and customs clearance requirements for the EU market.
The CE certification of our hydraulic safety valves is done strictly in line with the EU Pressure Equipment Directive PED (97/23/EC). We also refer to relevant harmonized standards, such as EN ISO 4126. During certification, we confirm the product’s applicable regulatory category based on its design pressure, nominal diameter, and application conditions.
Each hydraulic safety valve has a formal CE mark clearly engraved in a prominent spot on the valve body. We also engrave key information there, such as the product model, batch number, and nominal pressure.
Besides, we provide both paper and electronic versions of the CE declaration of conformity. Paper documents are delivered with the goods, packaged. The electronic version can be sent in advance, making it easy for you to use for customs clearance, project filing, or internal compliance reviews.
7. Can you provide the product manual for the hydraulic safety valve?
Of course. Our hydraulic safety valve product manual covers all brass- and stainless-steel models. It includes all core info: product model specs, technical parameters (nominal diameter, pressure class, operating temperature, applicable medium, and more), structural diagrams, installation steps and precautions, plus pressure adjustment methods.
The manual content can be customized to your needs. Like adding your brand logo, local language comparison instructions, usage guidelines for specific working conditions, and so on. We can also provide simple installation operation cards for quick on-site reference.
The manual is available in electronic and paper versions. The electronic version is in PDF format,and we can send it to your designated email in advance—easy for archiving, reference, and printing. The paper version is color-printed and shipped with the goods.
