Adjustable Pressure Relief Valve is a compact, high-performance safety valve engineered for use in high-pressure systems. Made from anodized aluminum, this valve offers excellent durability, corrosion resistance, and lightweight construction—weighing only 2.1 oz (60g).
With an adjustable output pressure range from 900 psi to 6000 psi, this valve provides precise control, allowing you to set your desired pressure limit during checkout. It is ideal for preventing overpressure in various critical systems, including compressors, hydraulic systems, and gas lines.
Key Features
- Adjustable Pressure Range: Set output pressure from 900 psi to 6000 psi for a wide range of applications.
- Maximum Rated Pressure: Handles up to 6000 psi, offering high safety and performance under pressure.
- Bubble-Tight Seal: Maintains a bubble-tight shutoff within a few psi of the set pressure and reseats securely after each vent cycle.
- Durable Construction: Built with anodized aluminum body, brass and stainless steel internals, and Viton seals for chemical resistance and long-lasting use.
- Compact Design: Lightweight and only 2.5 inches long, making it perfect for space-constrained systems.
- 1/4″ MNPT Inlet: Standard inlet port for easy installation and compatibility.
- Side Vent Outlet: Non-captured vent outlet for effective pressure relief to atmosphere.
- Safety Wire Ready: Equipped with safety wire holes to lock the pressure setting (safety wire not included).
Specifications
| Specification | Details |
|---|---|
| Type | Adjustable Pressure Relief Valve |
| Model | Aqua Environment 504 |
| Adjustment Range | 900 – 6000 psi¹ |
| Max Rated Pressure | 6000 psi |
| Inlet Port Size | 1/4″ MNPT |
| Outlet | Side vent (not captured) |
| Flow Capacity | 50 SCFM @ 1500 psi, 100 SCFM @ 3000 psi |
| Leakage | Bubble tight |
| Outlet Pressure | Atmospheric |
| Overall Length | 2.5 inches |
| Hex Diameter | 0.87 inches |
| Weight | 2.1 oz (60 g) |
| Min Temperature | -15ºF (-26ºC) |
| Body Material | Anodized Aluminum |
| Internal Materials | Brass, Stainless Steel |
| Seal Material | Viton |
| Flow Coefficient (Cv) | 0.094″ orifice diameter |
| Safety Features | Safety wire holes (wire not included) |
Applications
This adjustable valve is widely used across multiple industries due to its high-pressure tolerance and bubble-tight sealing:
- Interstage reliefs for small high-pressure compressors
- Charging line safety for gas or air systems
- Regulator and manifold protection
- Hydraulic accumulator and system reliefs
- General overpressure protection in industrial settings
Furthermore, its reliability and compact size make it ideal for mobile, confined, or sensitive environments where space and precision matter.
Important Note
Although this valve supports settings up to 6000 psi, the manufacturer recommends the 1607 model for use above 5000 psi. Both the 504 and 1607 share the same physical dimensions. However, the 1607 features design improvements that better support higher pressure applications.
Purchase Details
- Model: Aqua Environment 504
- Price: $85.00
- SKU: 504
- Specify Desired Output Pressure (900–6000 psi) at checkout
