Radiator Steam Valve 1" Bronze, Rising and 48 similar items

3-Pack Radiator Steam Valve 1 in Bronze ProLine 109-305 15 PSI 4.5x4x2.3 in The ProLine 109-305 radiator steam valve is a heavy-duty bronze shut-off valve designed for precise flow regulation and reliable isolation in low-pressure steam and hydronic heating systems. Rated for 15 PSI working steam pressure and 60 PSI non-shock hot water, it features a rising stem with adjustable gland packing and a neoprene-sealed disc for leak-resistant, long-cycle operation. The heat-resistant hand wheel enables safe manual control even during high-temperature conditions, while the 1-inch NPT inlet and 3/4-inch MHT outlet ensure compatibility with standard radiator piping. Sold as a 3-pack, this valve supports efficient system balancing, maintenance isolation, and zone control in residential and light commercial installations. Features - 1-inch NPT inlet with 3/4-inch MHT outlet for standard radiator and pipe integration - Rising stem design with adjustable packing nut for consistent sealing and smooth operation - Neoprene disc seal resists hardening, scaling, and thermal fatigue for tight shut-off - Solid bronze construction delivers superior corrosion resistance and mechanical strength - Rated for 15 PSI steam and 60 PSI hot water?ideal for low-pressure heating circuits - Heat-resistant hand wheel allows safe manual adjustment in elevated-temperature zones - Compatible with steam, hot water, air, and light oil service media - Compact, space-efficient footprint fits in tight mechanical or radiator enclosures - No internal springs or complex mechanisms?ensures maintenance-free reliability - 3-pack configuration supports multi-unit installations or spares inventory Specifications - Brand Name: ProLine - Model Name: ProLine 109-305 - Part Number: 109-305 - Product Type: Radiator Steam Valve - Valve Type: Rising Stem Manual Shut-Off - Material: Bronze (body, stem, bonnet) - Inlet Connection: 1 in NPT - Outlet Connection: 3/4 in MHT - Pressure Rating: 15 PSI WSP (steam), 60 PSI (hot water, non-shock) - Seal Material: Neoprene - Hand Wheel: Heat-resistant thermoplastic - Media Compatibility: Steam, Hot Water, Air, Light Oil - Product Dimensions: 4.5 x 4 x 2.3 in - Item Weight: 1.2 lb (per valve) - Package Quantity: 3 - Certifications: Meets ASTM B62 for bronze valve castings - Country of Origin: United States - UPC: 032888093058 - Global Trade Identification Number: 00032888093058 - Manufacturer: Mueller Industries Product Application This valve is installed by plumbers, HVAC technicians, and building maintenance teams in steam or hot water radiator systems to isolate individual units for servicing, adjust heat output per zone, or balance system flow in multi-radiator loops. Commonly used in older urban apartments, historic homes, schools, and small commercial buildings with cast-iron radiators, it ensures safe, manual control without reliance on electricity or automation. Its robust bronze build withstands decades of thermal cycling and mineral exposure?making it especially valuable in systems prone to sediment or where long-term reliability outweighs automation. The 3-pack format streamlines bulk installation in multi-family retrofits or facility upgrades, delivering consistent performance, code-compliant operation, and reduced downtime across entire heating networks.