Kunkle 920 Safety Relief Valve — 1/2″ x 1″ NPT, D Orifice (Organic Fluid (PVG) ASME Section I, Metal Seat)
SKU: KUN-920-DM-C-1_2X1
The Kunkle 920 is a full-nozzle carbon steel safety relief valve built specifically for organic fluid and thermal-fluid vaporizers, carrying the ASME Section I ‘V’ stamp. Supplied with a threaded cap as a Section I ‘V’ special-use (PVG) valve. This 1/2″ x 1″ NPT variant — D orifice, 0.121 in² — covers a 15–1400 PSI set pressure range on organic fluid vapor service with a metal seat. Body is carbon steel (SA216 Gr. WCB) with 316 stainless trim and a hard chrome plated disc holder; temperature range -20°F to 800°F. Overall height shown is for the threaded cap configuration; add 1-1/4 in for set pressures above 200 PSI. Specify your required set pressure when requesting a quote.
Specifications
| Body Material | Carbon Steel (SA216 Gr. WCB) |
| Trim Material | Stainless Steel (316), hard chrome plated disc holder |
| Inlet Size | 1/2" NPT |
| Outlet Size | 1" NPT |
| Outlet Configuration | Side outlet |
| Orifice Designation | D |
| Orifice Area | 0.121 in² |
| Set Pressure | 15–1400 PSI |
| Temperature Range | -20°F to 800°F |
| Capacity — Steam I | 174–7990 |
| Flow Coefficient | 0.878 |
| Service Media | Organic Fluid Vapor |
| ASME Certification | ASME Section I (V stamp), National Board Certified |
| National Board Certified | Yes |
| Seat Type | Metal |
| Weight | 3 lb |
| Overall Height | 7-1/4 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.
Get a Quote