The 2L/PV-1 is a manually operated 2-way ball valve purpose-built for gas sampling and transport in continuous emissions monitoring (CEMS) and process analysis systems. Its PVDF body and FPM (Viton) seals resist the corrosive flue gases and condensates common in stack sampling — no metal parts contact the sample stream.

Why PVDF over metal for gas sampling?

PVDF (polyvinylidene fluoride) offers broad chemical resistance to acids, SO₂, and wet flue gas condensate that would corrode stainless steel over time. Combined with FPM O-ring seals in an adjustable gland packing, the valve maintains gas-tight integrity through repeated thermal cycling from -20°C to +80°C. The material pair is standard in CEMS sample conditioning where sample integrity depends on wetted surfaces that do not react, adsorb, or outgas.

What does the optional position feedback provide?

The /K option adds a micro switch that reports open/closed status via a potential-free changeover contact (max. 0.5 A at 48 V). This lets a PLC or DCS confirm the valve position before initiating a sampling sequence — a common requirement in automated emissions monitoring where valve state must be interlocked with analyzer calibration cycles.

Frequently Asked Questions

How does the 2L differ from the 3L, 4L, and 5L variants?

The 2L/PV-1 is a straight 2-way valve with two G 1/4 ports. The 3L adds a third port for diverting flow between two paths. The 4L and 5L extend the port count for more complex manifold arrangements — all sharing the same PVDF/Viton wetted materials and 10 bar pressure rating.

Can this valve be panel-mounted?

Yes. The compact cylindrical body (ø20 mm) mounts through a front panel up to 7 mm thick using the included locknut. The T-handle remains accessible on the panel face, making it suitable for analyzer rack front-panel installation.