Relief Valves, 6,000 PSI - R Series
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).
28 références disponibles
| Référence | Matériaux utilisés | Taille du raccordement 1 | Matériau de la rondelle anti extrusion | Matériau de conditionnement | Pression de tarage (psi) | Taille du raccordement 2 | Taille du raccordement 2 | Style raccordement 2 | Taille du raccordement | Type de commande | Température de service minimale | Taille du raccordement | Température de service maximale | Actionnement | Matériau de conditionnement | Style raccordement 1 | Matériau | Coefficient de débit | Pression de service maximale | Pression de tarage |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
4A-RH4A-VT-SS-K1 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 50 - 350 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 350 psi | 50 - 350 psi |
4A-RH4A-VT-SS-K2 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 350 - 750 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 750 psi | 350 - 750 psi |
4A-RH4A-VT-SS-K3 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 750 - 1500 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 1500 psi | 750 - 1500 psi |
4A-RH4A-VT-SS-K4 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 1500 - 2250 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 2250 psi | 1500 - 2250 psi |
4A-RH4A-VT-SS-K5 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 2250 - 3000 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 3000 psi | 2250 - 3000 psi |
4A-RH4A-VT-SS-K6 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 3000 - 4000 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 4000 psi | 3000 - 4000 psi |
4A-RH4A-VT-SS-K7 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 4000 - 5000 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 5000 psi | 4000 - 5000 psi |
4A-RH4A-VT-SS-K8 | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 5000 - 6000 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 6000 psi | 5000 - 6000 psi |
4A-RL4A-VT-SS-KA | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 10 - 25 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 25 psi | 10 - 25 psi |
4A-RL4A-VT-SS-KB | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 25 - 50 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 50 psi | 25 - 50 psi |
4A-RL4A-VT-SS-KC | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 50 - 100 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 100 psi | 50 - 100 psi |
4A-RL4A-VT-SS-KD | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 100 - 150 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 150 psi | 100 - 150 psi |
4A-RL4A-VT-SS-KE | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 150 - 225 | Two Ferrule Compression Fitting | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 225 psi | 150 - 225 psi |
4A-RL4A-VT-SS-KG | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 225 - 400 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 400 psi | 225 - 400 psi |
4A-RL4A-VT-SS-MN-KA | 316 Stainless Steel | Two Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 10 - 25 | 1/4" | 1/4" | Two Ferrule Compression Fitting | 1/4" | Manual Overdrive | -10 °F | 1/4" | 400 °F | Manual Overdrive | Fluorocarbon Rubber | Two Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 25 psi | 10 - 25 psi |
4Z-RH4A-VT-SS-K1 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 50 - 350 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 350 psi | 50 - 350 psi |
4Z-RH4A-VT-SS-K2 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 350 - 750 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 750 psi | 350 - 750 psi |
4Z-RH4A-VT-SS-K3 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 750 - 1500 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 1500 psi | 750 - 1500 psi |
4Z-RH4A-VT-SS-K4 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 1500 - 2250 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 2250 psi | 1500 - 2250 psi |
4Z-RH4A-VT-SS-K5 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 2250 - 3000 | Single Ferrule Compression Fitting | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 3000 psi | 2250 - 3000 psi |
4Z-RH4A-VT-SS-K7 | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 4000 - 5000 | Single Ferrule Compression Fitting | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 400 °F | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.41 Cv | 5000 psi | 4000 - 5000 psi |
4Z-RL4A-VT-SS-KA | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 10 - 25 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 25 psi | 10 - 25 psi |
4Z-RL4A-VT-SS-KB | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 25 - 50 | Single Ferrule Compression Fitting | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 50 psi | 25 - 50 psi |
4Z-RL4A-VT-SS-KC | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 50 - 100 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -10 °F | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 100 psi | 50 - 100 psi |
4Z-RL4A-VT-SS-KD | 316 Stainless Steel | Single Ferrule Compression Fitting | PTFE | Fluorocarbon Rubber | 100 - 150 | 1/4" | 1/4" | Single Ferrule Compression Fitting | 1/4" | Standard | -23 °C | 1/4" | 204 °C | Standard | Fluorocarbon Rubber | Single Ferrule Compression Fitting | 316 Stainless Steel | 0.75 Cv | 150 psi | 100 - 150 psi |
Description
Parker R Series Relief Valves are unique since they offer both a low pressure valve line (RL4) and a higher pressure valve line (RH4). They are both designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Flow through the valve increases proportionately to the increase in upstream pressure. These relief valves work from 1-25 psig crack pressure systems up to 5,000-6,000 psig crack pressure systems. The highly visible color coded labels on the valves indicate the associated crack pressure spring included in the valve.
To assist the installer, these valves are offered with a wide range seal materials. From Ethylene Propylene Rubber at -70F to Fluorocarbon Rubber at 400F, these relief valves meet numerous applications.
Markets:
• Chemical
• Petrochemical
• Oil and Gas
• Research
Features/Benefits:
• Pressure settings are externally adjustable while the valve is in operation. Multiple spring ranges provide greater system sensitivity and enhanced performance.
• Captured molded seat design is blow-out and chip resistant.
• Manual Override option with positive stem retraction is available for pressures up to 1500 psig (103 bar).
• This option permits the user to relieve upstream pressure while maintaining the predetermined cracking pressure.
• Color coded springs and labels indicate spring cracking range.
• Lock wire feature secures a given pressure setting
• Back pressure has minimum effect on cracking pressure.
Applications:
• Process Control Lines
• Research Equipment
• Monitoring Lines
