Kunkle 6230 Safety Relief Valve — 1-1/2″ NPT, H Orifice (Air/gas ASME Section VIII, Viton (FKM) Seat)
SKU: KUN-6230-HV-K-1_1_2
The Kunkle 6230 is an oversized-outlet, full-nozzle safety relief valve with stainless steel trim (nozzle and disc) for steam boilers, air compressors, and pressure vessels where greater outlet capacity is required. This 1-1/2″ NPT inlet variant — H orifice, 0.863 in² — is available across a 3–300 PSI set pressure range for Air/gas ASME Section VIII service with a Viton (FKM) seat, carrying ASME Sections VIII and XIII (UV stamp), National Board Certified. Body: bronze (BRZ B584-C84400); oversized side outlet (2-1/2″) with dual control rings for precise blowdown adjustment. Specify your required set pressure when requesting a quote.
Specifications
| Body Material | Bronze (BRZ B584-C84400) |
| Trim Material | Stainless Steel (nozzle SA351-CF8 / disc SA479) |
| Inlet Size | 1-1/2" NPT |
| Outlet Size | 2-1/2" NPT |
| Outlet Configuration | Oversized side outlet |
| Orifice Designation | H |
| Orifice Area | 0.863 in² |
| Set Pressure | 3–300 PSI |
| Temperature Range | -15°F to 406°F |
| Capacity — Air (SCFM) | 198–4788 |
| Flow Coefficient | 0.878 |
| Service Media | Air, Non-hazardous Gas |
| ASME Certification | ASME Sections VIII and XIII (UV stamp), National Board Certified |
| National Board Certified | Yes |
| Seat Type | Viton (FKM) |
| Weight | 8 lb |
| Overall Height | 10-5/8 in |
Need a quote or have a technical question?
Call (324) 888-1524 or submit a quote request online. Requests received before 3 PM ET are typically quoted the same business day.
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