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Relief Valves

Category: valve
Master Model: N/A
Drawing No.: N/A
Quantity: - + EA
Price: Inquiry
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If you need a specific Relief Valves firmware or series. Please call or email us your request.

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  Specialist Team

  Response Rate High

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Parker's R Series Relief Valves are designed such that when the upstream pressure exceeds the closing force exerted by the spring,

the lower stem opens, permitting flow through the valve. Pressures range from 10 PSI (0.7 BAR) to 6,000 PSI (413.7 BAR).

Part Connection Size Connection Size 2 Connection 1 Style Connection 2 Style Actuation Cracking Pressure (psi) Material
4KF-RL4A-NET-SS-KE 1/4" 1/4" BSP F BSP F Standard 150 - 225 316 Stainless Steel
4KF-RL4A-NET-SS-KG 1/4" 1/4" BSP F BSP F Standard 225 - 400 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KA 1/4" 1/4" BSP F BSP F Manual Overdrive 44494 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KB 1/4" 1/4" BSP F BSP F Manual Overdrive 25 - 50 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KC 1/4" 1/4" BSP F BSP F Manual Overdrive 50 - 100 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KD 1/4" 1/4" BSP F BSP F Manual Overdrive 100 - 150 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KE 1/4" 1/4" BSP F BSP F Manual Overdrive 150 - 225 316 Stainless Steel
4KF-RL4A-NET-SS-MN-KG 1/4" 1/4" BSP F BSP F Manual Overdrive 225 - 400 316 Stainless Steel
4KF-RL4A-VT-SS-KA 1/4" 1/4" BSP F BSP F Standard 44494 316 Stainless Steel
4KF-RL4A-VT-SS-KB 1/4" 1/4" BSP F BSP F Standard 25 - 50 316 Stainless Steel
4KF-RL4A-VT-SS-KC 1/4" 1/4" BSP F BSP F Standard 50 - 100 316 Stainless Steel
4KF-RL4A-VT-SS-KD 1/4" 1/4" BSP F BSP F Standard 100 - 150 316 Stainless Steel
4KF-RL4A-VT-SS-KE 1/4" 1/4" BSP F BSP F Standard 150 - 225 316 Stainless Steel
4KF-RL4A-VT-SS-KG 1/4" 1/4" BSP F BSP F Standard 225 - 400 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KA 1/4" 1/4" BSP F BSP F Manual Overdrive 44494 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KB 1/4" 1/4" BSP F BSP F Manual Overdrive 25 - 50 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KC 1/4" 1/4" BSP F BSP F Manual Overdrive 50 - 100 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KD 1/4" 1/4" BSP F BSP F Manual Overdrive 100 - 150 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KE 1/4" 1/4" BSP F BSP F Manual Overdrive 150 - 225 316 Stainless Steel
4KF-RL4A-VT-SS-MN-KG 1/4" 1/4" BSP F BSP F Manual Overdrive 225 - 400 316 Stainless Steel
4KM-RH4A-BNT-SS-K1 1/4" 1/4" BSP M BSP M Standard 50 - 350 316 Stainless Steel
4KM-RH4A-BNT-SS-K2 1/4" 1/4" BSP M BSP M Standard 350 - 750 316 Stainless Steel
4KM-RH4A-BNT-SS-K3 1/4" 1/4" BSP M BSP M Standard 750 - 1500 316 Stainless Steel
4KM-RH4A-BNT-SS-K4 1/4" 1/4" BSP M BSP M Standard 1500 - 2250 316 Stainless Steel
4KM-RH4A-BNT-SS-K5 1/4" 1/4" BSP M BSP M Standard 2250 - 3000 316 Stainless Steel
4KM-RH4A-BNT-SS-K6 1/4" 1/4" BSP M BSP M Standard 3000 - 4000 316 Stainless Steel
4KM-RH4A-BNT-SS-K7 1/4" 1/4" BSP M BSP M Standard 4000 - 5000 316 Stainless Steel
4KM-RH4A-BNT-SS-K8 1/4" 1/4" BSP M BSP M Standard 5000 - 6000 316 Stainless Steel
4KM-RH4A-EPRT-SS-K1 1/4" 1/4" BSP M BSP M Standard 50 - 350 316 Stainless Steel
4KM-RH4A-EPRT-SS-K2 1/4" 1/4" BSP M BSP M Standard 350 - 750 316 Stainless Steel
4KM-RH4A-EPRT-SS-K3 1/4" 1/4" BSP M BSP M Standard 750 - 1500 316 Stainless Steel
4KM-RH4A-EPRT-SS-K4 1/4" 1/4" BSP M BSP M Standard 1500 - 2250 316 Stainless Steel
4KM-RH4A-EPRT-SS-K5 1/4" 1/4" BSP M BSP M Standard 2250 - 3000 316 Stainless Steel
4KM-RH4A-EPRT-SS-K6 1/4" 1/4" BSP M BSP M Standard 3000 - 4000 316 Stainless Steel
4KM-RH4A-EPRT-SS-K7 1/4" 1/4" BSP M BSP M Standard 4000 - 5000 316 Stainless Steel
4KM-RH4A-EPRT-SS-K8 1/4" 1/4" BSP M BSP M Standard 5000 - 6000 316 Stainless Steel
4KM-RH4A-KZT-SS-K1 1/4" 1/4" BSP M BSP M Standard 50 - 350 316 Stainless Steel
4KM-RH4A-KZT-SS-K2 1/4" 1/4" BSP M BSP M Standard 350 - 750 316 Stainless Steel
4KM-RH4A-KZT-SS-K3 1/4" 1/4" BSP M BSP M Standard 750 - 1500 316 Stainless Steel
4KM-RH4A-KZT-SS-K4 1/4" 1/4" BSP M BSP M Standard 1500 - 2250 316 Stainless Steel
4KM-RH4A-KZT-SS-K5 1/4" 1/4" BSP M BSP M Standard 2250 - 3000 316 Stainless Steel
4KM-RH4A-KZT-SS-K6 1/4" 1/4" BSP M BSP M Standard 3000 - 4000 316 Stainless Steel
4KM-RH4A-KZT-SS-K7 1/4" 1/4" BSP M BSP M Standard 4000 - 5000 316 Stainless Steel
4KM-RH4A-KZT-SS-K8 1/4" 1/4" BSP M BSP M Standard 5000 - 6000 316 Stainless Steel
4KM-RH4A-NET-SS-K1 1/4" 1/4" BSP M BSP M Standard 50 - 350 316 Stainless Steel
4KM-RH4A-NET-SS-K2 1/4" 1/4" BSP M BSP M Standard 350 - 750 316 Stainless Steel
4KM-RH4A-NET-SS-K3 1/4" 1/4" BSP M BSP M Standard 750 - 1500 316 Stainless Steel
4KM-RH4A-NET-SS-K4 1/4" 1/4" BSP M BSP M Standard 1500 - 2250 316 Stainless Steel
4KM-RH4A-NET-SS-K5 1/4" 1/4" BSP M BSP M Standard 2250 - 3000 316 Stainless Steel
4KM-RH4A-NET-SS-K6 1/4" 1/4" BSP M BSP M Standard 3000 - 4000 316 Stainless Steel
4KM-RH4A-NET-SS-K7 1/4" 1/4" BSP M BSP M Standard 4000 - 5000 316 Stainless Steel
4KM-RH4A-NET-SS-K8 1/4" 1/4" BSP M BSP M Standard 5000 - 6000 316 Stainless Steel
4KM-RH4A-VT-SS-K1 1/4" 1/4" BSP M BSP M Standard 50 - 350 316 Stainless Steel
4KM-RH4A-VT-SS-K2 1/4" 1/4" BSP M BSP M Standard 350 - 750 316 Stainless Steel
4KM-RH4A-VT-SS-K3 1/4" 1/4" BSP M BSP M Standard 750 - 1500 316 Stainless Steel
4KM-RH4A-VT-SS-K4 1/4" 1/4" BSP M BSP M Standard 1500 - 2250 316 Stainless Steel
4KM-RH4A-VT-SS-K5 1/4" 1/4" BSP M BSP M Standard 2250 - 3000 316 Stainless Steel
4KM-RH4A-VT-SS-K6 1/4" 1/4" BSP M BSP M Standard 3000 - 4000 316 Stainless Steel
4KM-RH4A-VT-SS-K7 1/4" 1/4" BSP M BSP M Standard 4000 - 5000 316 Stainless Steel
4KM-RH4A-VT-SS-K8 1/4" 1/4" BSP M BSP M Standard 5000 - 6000 316 Stainless Steel
4KM-RL4A-BNT-SS-KA 1/4" 1/4" BSP M BSP M Standard 44494 316 Stainless Steel
4KM-RL4A-BNT-SS-KB 1/4" 1/4" BSP M BSP M Standard 25 - 50 316 Stainless Steel
4KM-RL4A-BNT-SS-KC 1/4" 1/4" BSP M BSP M Standard 50 - 100 316 Stainless Steel
4KM-RL4A-BNT-SS-KD 1/4" 1/4" BSP M BSP M Standard 100 - 150 316 Stainless Steel
4KM-RL4A-BNT-SS-KE 1/4" 1/4" BSP M BSP M Standard 150 - 225 316 Stainless Steel
4KM-RL4A-BNT-SS-KG 1/4" 1/4" BSP M BSP M Standard 225 - 400 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KA 1/4" 1/4" BSP M BSP M Manual Overdrive 44494 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KB 1/4" 1/4" BSP M BSP M Manual Overdrive 25 - 50 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KC 1/4" 1/4" BSP M BSP M Manual Overdrive 50 - 100 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KD 1/4" 1/4" BSP M BSP M Manual Overdrive 100 - 150 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KE 1/4" 1/4" BSP M BSP M Manual Overdrive 150 - 225 316 Stainless Steel
4KM-RL4A-BNT-SS-MN-KG 1/4" 1/4" BSP M BSP M Manual Overdrive 225 - 400 316 Stainless Steel
4KM-RL4A-EPRT-SS-KA 1/4" 1/4" BSP M BSP M Standard 44494 316 Stainless Steel
4KM-RL4A-EPRT-SS-KB 1/4" 1/4" BSP M BSP M Standard 25 - 50 316 Stainless Steel
4KM-RL4A-EPRT-SS-KC 1/4" 1/4" BSP M BSP M Standard 50 - 100 316 Stainless Steel
4KM-RL4A-EPRT-SS-KD 1/4" 1/4" BSP M BSP M Standard 100 - 150 316 Stainless Steel
4KM-RL4A-EPRT-SS-KE 1/4" 1/4" BSP M BSP M Standard 150 - 225 316 Stainless Steel
4KM-RL4A-EPRT-SS-KG 1/4" 1/4" BSP M BSP M Standard 225 - 400 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KA 1/4" 1/4" BSP M BSP M Manual Overdrive 44494 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KB 1/4" 1/4" BSP M BSP M Manual Overdrive 25 - 50 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KC 1/4" 1/4" BSP M BSP M Manual Overdrive 50 - 100 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KD 1/4" 1/4" BSP M BSP M Manual Overdrive 100 - 150 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KE 1/4" 1/4" BSP M BSP M Manual Overdrive 150 - 225 316 Stainless Steel
4KM-RL4A-EPRT-SS-MN-KG 1/4" 1/4" BSP M BSP M Manual Overdrive 225 - 400 316 Stainless Steel
4KM-RL4A-KZT-SS-KA 1/4" 1/4" BSP M BSP M Standard 44494 316 Stainless Steel
4KM-RL4A-KZT-SS-KB 1/4" 1/4" BSP M BSP M Standard 25 - 50 316 Stainless Steel
4KM-RL4A-KZT-SS-KC 1/4" 1/4" BSP M BSP M Standard 50 - 100 316 Stainless Steel
4KM-RL4A-KZT-SS-KD 1/4" 1/4" BSP M BSP M Standard 100 - 150 316 Stainless Steel
4KM-RL4A-KZT-SS-KE 1/4" 1/4" BSP M BSP M Standard 150 - 225 316 Stainless Steel
4KM-RL4A-KZT-SS-KG 1/4" 1/4" BSP M BSP M Standard 225 - 400 316 Stainless Steel
4KM-RL4A-KZT-SS-MN-KA 1/4" 1/4" BSP M BSP M Manual Overdrive 44494 316 Stainless Steel
4KM-RL4A-KZT-SS-MN-KB 1/4" 1/4" BSP M BSP M Manual Overdrive 25 - 50 316 Stainless Steel
4KM-RL4A-KZT-SS-MN-KC 1/4" 1/4" BSP M BSP M Manual Overdrive 50 - 100 316 Stainless Steel