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Diameter DN 65 pipeline control valves include gate valves with a rated water working pressure of at least 175 psi. The valve body and bonnet must be made from cast bronze alloy meeting the ASTM B 62 standard. The valve should have an OS & Y design with threaded connections. It must be certified by UL and FM, and comply with the MSS-SP80 standard. A suitable option is the Nibo Ke T-104-O gate valve with a PTFE seat.
For ball valves in similar applications, the rated pressure should also exceed 175 psi. These should feature a PTFE seat and be equipped with a weatherproof gear actuator for indoor or outdoor use. They should include a raised position indicator and two built-in monitoring switches. Connections can be threaded or slotted, and the valves must meet UL, FM, and MSS-SP110 standards. Examples include the NIBCO KT-505 (threaded) and KG-505-8W (slotted) ball valves.
Gate valves for DN65 and larger pipelines require a minimum working pressure of 175 psi. They should have a cast iron body with bronze trim or an elastomeric seal wedge. The body and bonnet must conform to ASTM A126 Class B or ductile iron ASTM A536 with an OS & Y bonnet. If using an elastic wedge, the interior should be coated with epoxy resin. Connections can be 125-pound flanged or slotted. These valves must pass UL, FM, or MSS-SP70 standards. Available models include the NIBCO F-607-OTS, F-607-RW, G-607-RW, and FG-607-RW.
For gate valves above DN100, the working pressure should not be less than 175 psi. They should have bronze trim and a resilient rubber seal wedge. The body and bonnet must comply with ASTM A126 Class B or ductile iron ASTM A536 with integrated indicator column mounting flanges. If an elastic wedge is used, internal epoxy coating is required. Connections can be 125-pound flanges or mechanical types. Vertical indicator columns should be adjustable for deep burial. Available options include NIBCO F-609 or F-609-RW flanged gate valves, as well as Neuberger M-609 or M-607-RW underground mechanically operated gate valves.
Check valves must have a minimum working pressure of 175 psi, with bronze trim and a rubber-metal seat. The body should be made of ASTM A126 Grade B cast iron. Connections can be flanged or clip-on style. They must be UL and FM certified and comply with MSS-SP71. Suitable models include the Nibo Ke F-908-W flange check valve and KW-900-W clip-on check valve.
Butterfly valves for DN65 and above should have a rated pressure of at least 175 psi. They should be equipped with weatherproof, gear-driven actuators with hand wheels, a raised position indicator, and two built-in monitoring switches. The body should be ductile iron (ASTM A395 or A536), and the stem made of 400 series stainless steel. Connections can be plate-style for 125/150 lb flanges or IPS tubing. These valves must be UL and FM certified and meet MSS-SP67 standards. Options include the NIBCO WD-3510-8 flat/convex butterfly valve and GD-4765-8N tubular butterfly valve.
Stem valves require a minimum working pressure of 300 psi. The OS & Y bonnet and body should be cast iron meeting ASTM A126 Class B. Connections must be flanged with 250 or 300 lb flanges. These valves should be UL or FM certified and comply with MSS-SP70. An example is the Nibo Ke F-697-B gate valve.
Swing check valves for 300 psi applications should have bronze trim and an OS & Y bonnet made of ASTM A126 Class B cast iron. Flanged connections with 250 or 300 lb flanges are required. These valves must meet UL, FM, or MSS-SP70 standards. The Nibo Ke F-968-B gate valve is a suitable choice.
Drainage system ball valves for DN65 and below should have a minimum working pressure of 175 psi. They should feature a PTFE seat, threaded connection, anti-blowout stem, and rod handle. These valves must be UL or FM certified and meet MSS-SP110 standards. Models include the NIBCO KT-585-70UL (DN8–25) and KT-580-70UL (DN32–50).
Globe and angle valves should have a minimum working pressure of 175 psi, with a rubber seat flap and threaded port. They must be UL certified for drainage systems. Available options include the NIBCO KT-65-UL globe valve, KT-211-WUL globe valve, KT-67-UL angle valve, and T-301-W angle valve.
Check valves for drainage systems should have a minimum working pressure of 175 psi, with a rubber seat flap and threaded port. They should be Y-shaped horizontal swing type and comply with MSS-SP80. A suitable model is the Nibo Ke KT-403-W check valve.
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