500 Series Relief Valves 0.5 to 150 psig
Relief Valves
Features
- Popoff or inline valves
- Adjustable crack pressure
- Zero leakage
- Accurate set pressure
- Tamper-proof adjustment
- 100% seat leakage tested
- PED certifications and CE marking available for most models
Item # |
Variation |
Body Material |
Seal Material |
Valve Size |
End Connection |
Cracking Pressure |
Operating Temperature |
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|---|---|---|---|---|---|---|---|---|
| 559B-4M-2.5 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 2.5 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-4M-20 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 20 psig | Operating Temperature N/A -65 to 275 ºF |
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| 559B-4M-30 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 30 psig | Operating Temperature N/A -65 to 275 ºF |
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| 559B-4M-4 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 4 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-4M-60 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 60 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-4M-8 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 8 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-4M-90 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1/2 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 90 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-6M-2.5 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 3/4 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 2.5 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-6M-5 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 3/4 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 5 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-6MP-20 | Variation N/A Inline | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 3/4 in | End Connection N/A Pipe Thread Male/Female | Cracking Pressure N/A 20 psig | Operating Temperature N/A -65 to 275 ºF |
Add To Cart
Request Quote |
| 559B-8M-10 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 10 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-100 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 100 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-12.5 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 12.5 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-150 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 150 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-20 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 20 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-3 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 3 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-4 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 4 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-5 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 5 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-5.1 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 5.1 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8M-53 | Variation N/A Popoff | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 53 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559B-8MP-55 | Variation N/A Inline | Body Material N/A Brass | Seal Material N/A Buna N | Valve Size N/A 1 in | End Connection N/A Pipe Thread Male/Female | Cracking Pressure N/A 55 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559T1-1M-10 | Variation N/A Popoff | Body Material N/A 316 Stainless Steel | Seal Material N/A Buna N | Valve Size N/A 1/8 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 10 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559T1-1M-20 | Variation N/A Popoff | Body Material N/A 316 Stainless Steel | Seal Material N/A Buna N | Valve Size N/A 1/8 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 20 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559T1-1M-40 | Variation N/A Popoff | Body Material N/A 316 Stainless Steel | Seal Material N/A Buna N | Valve Size N/A 1/8 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 40 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
| 559T1-1M-46 | Variation N/A Popoff | Body Material N/A 316 Stainless Steel | Seal Material N/A Buna N | Valve Size N/A 1/8 in | End Connection N/A Pipe Thread Male | Cracking Pressure N/A 46 psig | Operating Temperature N/A -65 to 275 ºF |
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Request Quote |
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