Stop, regulating, check, safety and service valves for ammonia (R717) plants, from ¼ inch to 12 inch and up to 52 bar.
Shut-off valves socket- or butt-welded straight into the line, so there are no flanges or threads to leak. Back seating lets the gland be replaced while the valve is under pressure. Angle and globe types, handwheel or seal cap.
Combined stop and spring-closed check valve, or a plain angle check valve. Opens fully with flow and resets at once on reverse flow; stainless stems with back seating.
Catch dirt and weld slag ahead of ammonia pumps and compressors, especially during commissioning. Angle and globe types.
Two variants: A for metering liquid expansion, B for liquid-line flow regulation. Also works as a stop valve. Yellow caps tell them apart from shut-off valves.
Cold-resistant steel housing, rotating cone so the seat does not wear, polished stainless spindle with PTFE and graphite sealing.
Angle and straight-way regulating valves with linear characteristic; act as stop valves when closed. Internal back seating for spindle-seal replacement under pressure.
For ammonia and other non-flammable refrigerants.
For liquid, suction and hot-gas lines in ammonia and fluorinated-refrigerant plants. Special spring available for lines with cold, thick oil.
Butt-weld strainers for all common refrigerants.
For R717, R744 (CO₂), HCFC and HFC systems.
Lost-wax cast bodies welded directly to the pipe. Replaceable Teflon seat, front and back seating, stainless stem, top part changes without cutting the line. L (angle) and Y (straight) forms.
Cast steel ASTM A-216 WCB body, 410 stainless spindle and replaceable PTFE front and back seats. Easy to dismantle and repair.
Globe, angle and Y-type valves in closed-grain cast iron with metal or Teflon seat, stainless spindle and ammonia gland.
Small-bore cast iron valves with metal or Teflon seat, including tee valves that flow in two directions.
For liquid feed to evaporators, accumulators and intercoolers. Dual function: expansion and isolation. Red handwheels, individually pressure tested.
Piston type for compressor and pump discharge and hot-gas lines; compact in-line type with stainless disc for suction, liquid and hot-gas lines.
Stainless mesh strainers, cleaned without breaking the line. Flanged, screwed, Y-type and socket-weld versions.
Set and sealed by qualified technicians to protect vessels against excess pressure.
Two relief valves on one manifold: one stays in service while the other is changed, with no need to pump out the vessel. Meets the ANSI/ASHRAE 15 dual-relief requirement for vessels of 10 ft³ and above.
Three-piece body swings out for maintenance without removing the valve from the line.
Spring-loaded dead-man's valve: closes the instant the handle is released, so oil can be drained without losing ammonia.
Weldable pressure gauge valves, angle gauge valves for level glasses (ball check stops flow if the glass breaks) and flanged flow indicators.
Tongue-and-groove flanges in oval, square and round shapes, supplied as kits with bolts, nuts and gaskets.
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