Stainless Steel 316L Non-Rising Stem Gate Valve DN80 Price and Selection Parameters
Its core advantages are superior corrosion resistance and compact installation footprint. The 316L grade offers excellent resistance to chloride pitting and intergranular corrosion, making it suitable for seawater, brine, and various chemical applications. The non-rising stem design keeps the stem from lifting during operation, saving valuable headroom in confined spaces .The main gate valve product names of China gate valve Network include:API Electric Lug&wafer Knife-shaped Gate Valve,API Bevel Gear Lug&wafer Knife-shaped Gate Valve,Inside Screw Non-rising Stem Wedge Gate Valve,Insulation Jacket Gate Valve,Lined Gate Valve,MZ44W Rising Stem Gas Quick Open&close Parallel,MZ48W Manual Non-rising Stem City Gas Quick Gate Valve.
2026 Price Reference for DN80 316L Non-Rising Stem Gate Valve
Prices for this valve vary based on pressure rating, connection type, and order quantity:
PN16 flanged: **$120–170 per piece** (bulk 10+ pieces: $105–150)
PN25 flanged: $155–220 per piece
Wafer type: $100–135 per piece
Prices fluctuate with molybdenum cost, pressure rating, brand, and certification requirements. Additional features such as electric or pneumatic actuation will increase the cost.
Key Selection Parameters
Size and Pressure: DN80 (3 inches, pipe OD 89mm). Available in PN16, PN25, or Class 150 ratings. Ensure the working pressure does not exceed 90% of the rated pressure for safe operation.
Connection Standards: Specify the flange standard—GB/T 9113, DIN, or ANSI—to match your piping system. Face-to-face length is approximately 203mm for PN16 flanged designs per GB/T 12234 .
Seat and Packing: Choose between metal-seated (Stellite hardfacing, ≤450°C) for high-temperature service or soft-seated (PTFE, bubble-tight but ≤200°C) for applications requiring zero leakage. Stem packing options include PTFE (≤200°C) or flexible graphite (≤450°C) .
Material Specification: 316L resists chloride pitting up to 1000ppm at room temperature and is suitable for seawater, brine, dilute sulfuric acid, bleach, and purified water. It is not recommended for strong HCl, concentrated H₂SO₄, or high-temperature high-chloride solutions.
Installation and Maintenance
Install with the flow arrow (preferred low-in high-out); never install upside down. Lubricate stem threads monthly and cycle fully open-close quarterly to prevent sticking .
Summary
The Stainless Steel 316L Non-Rising Stem Gate Valve DN80 is the top choice for corrosive, confined-space applications with prices starting from $100–120 for basic configurations. Proper selection of pressure rating, connection standard, seat type, and regular maintenance ensures long-term reliability.
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