- Renewable Internal Stem Bonnet
- 4000 psig CWP 6000 psig Test
- ¾” NPT Male Union Tank Connection
- ½” NPT Female Gauge Connection
- ½” NPT Female Drain Connection
Type 4 Valves have a ¾” NPT Male Vessel Connection as standard, with other connections available on application. Type 4 Straight-Thru Gage Valves are stocked in carbon steel with stainless steel trim. Teflon® packing is furnished as standard for temperatures not exceeding 450⁰ F; for higher temperatures not exceeding 700⁰ F, flexible graphite packing is standard. The Type 4 Valve utilizes a stainless steel ball-check to block fluid leakage from the vessel in the event of gage glass breakage. The Type 4 Valve is available with an optional backseating stem that extends the service life of the stem packing. An optional back seating stem is available on request.