D4557 Adjustable Relief Valve 1-1/4 In 300 psi MPN:69D1S-300
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The D4557 adjustable relief valve is designed for use in hydraulic, industrial, automotive and aviation applications where pressure control is required. It features a 1-1/4 female inlet and outlet with a working pressure of 300 psi. The adjustable screw mechanism allows users to easily set the desired pressure limit and range from 0-300 psi. This durable valve constructed from bronze ensures that system pressures do not exceed the preset value, helping to protect equipment from potential damage. Professional technicians, engineers, and maintenance teams who require precise pressure regulation in their machinery often use D4557 adjustable relief valves in various industries.
• Max. temp.: 450°F
Field-adjustable pressure is factory set to midrange for minimal effect on flow capacity rates. Adjustment requires no disassembly; simply remove hex cap. Closed bonnet, sealed hex cap, and lapped metal seating eliminate leakage. Stainless steel springs. MNPT x FNPT connections. For pressure relief, liquid relief, continuous bypass, and overprotection for pumping stations, tanks, hydraulics, fluid, and pipelines.
Technical Specifications
- Item Adjustable Relief Valve
- Body Material Bronze
- Inlet Type MNPT
- Outlet Type FNPT
- Inlet Size 1 1/4 in
- Outlet Size 1 1/4 in
- Factory Set Pressure 300 psi
- Pressure Range 251 to 300 psi
- Disc Material 316 Stainless Steel
- Overall Height 8 1/2 in
- Application Liquids
- Seat Material 316 Stainless Steel
- Spring Material 316 Stainless Steel
- Temp. Range 0 Degrees to 450 Degrees F
- Test Lever No
Manufacturer Details
- Manufacturer: Aquatrol
- Condensed Mfg Number: 69D1S300
- MPN: 69D1S-300
Label Details
- Hazardous Material: N
- Green Material Flag: N
- Country of Origin: US
- CA Prop 65 Wht Label: N
Classification Details
- Harmonization Code: 8481400000
- GDS Category Name: Relief Valves
- GDS Family Name: Pressure and Temperature Control Valves
- GDS Segment Name: Plumbing
- UNSPSC: 40141606
- UNSPSC Class ID: 16
- UNSPSC Commodity Name: Valves
- UNSPSC Commodity ID: 06
- UNSPSC Commodity Name: Relief valves
- UNSPSC Family ID: 14
- UNSPSC Family Name: Fluid and gas distribution
- UNSPSC Segment ID: 40
- UNSPSC Segment Name: Distribution and Conditioning Systems and Equipment and Components
Shipping Details
- Not For Sale In: HI AK PR
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