Series 300/A pilot 302/A paired with AR100 adjustable restrictor for pilot‑operated regulators (APERVAL, APERFLUX, TERVAL). 302/A governs the outlet set‑point; AR100 sets pilot bleed and dynamic response. Service kits include diaphragm pack, seat/valve insert, O‑rings and restrictor seals. Tuning of AR100 should target the manufacturer’s recommended pressure drops at minimum and maximum pilot flows to […]

½″ pilot loop combining 204/A (set‑point pilot) and R14/A (pre‑regulator) for REFLUX service. R14/A stabilizes feed to the 204/A so the main regulator maintains outlet pressure with high accuracy over varying inlet and flow. Kit includes diaphragms, seats, springs, filters and O‑rings for both devices.

P16/M is a pilot controller commonly used on pilot‑operated safety relief valves (e.g., PVS 803). It provides cut‑out in the 1.5–40 barg range with G¼ or EO tube connections and integrated filter. Kits replace diaphragm, seat and seals to maintain trip repeatability and leak‑tightness. For sizing and settings, refer to the safety valve or regulator […]

APERVAL is a pilot‑operated balanced regulator for medium/low‑pressure networks; 4″ bodies offer high capacity with top‑entry maintenance and modular options (monitor PM/182, slam‑shut, silencer). Kits include diaphragm/seat sets, body gaskets and pilot service parts to keep accuracy within EN 334 limits.

REFLUX 819 is a pilot‑operated balanced regulator for medium/high‑pressure systems. When fitted with DB/819, aerodynamic noise is attenuated without affecting accuracy. Kits cover main regulator soft parts, pilot loop seals and the silencer’s replaceable elements. Confirm DB/819 size versus body DN and flow.

FE/25 “L” configuration, a common lever‑operated variant for low/medium pressure pilot supply or instrument lines. Kits address the soft seat, diaphragm and sealing elements that affect droop and lock‑up. Replace per maintenance plan or when outlet drift/creep is detected during inspection. The “L” option is often chosen for low‑pressure pilot feeds; after rebuilding, adjust lever […]

FE/25 in TR execution (special range/trim). Suited for conditioning pilot feeds or small branch lines where compact size and stable pressure are required. Maintenance kits include diaphragm/seat assemblies, lever bushings and O‑rings; verify TR code on nameplate to match correct parts. It is often used upstream of pilots to decouple supply pressure fluctuations. After overhaul, […]

Lever‑operated FE/25 pressure regulator used on industrial gas lines, often as a control element or pilot supply conditioner. Provides stable outlet pressure with simple mechanical construction. Service kits typically include lever/seat, diaphragm, spring and seal replacements to restore tightness and accuracy.

NORVAL variant with reduced head (TR) per manufacturer documentation. Functionally identical to standard T.375 but with compact head geometry. Select kits specific to the TR head to ensure correct diaphragm and seat dimensions; replace all pilot tapping seals during re‑assembly. When ordering, specify TR on the purchase order to receive the reduced‑head diaphragm/seat geometry and […]

DN40/T.375 execution of the NORVAL direct‑acting regulator. PN16 flanged. Seal kits are dimensioned to the head size (T.375) and DN. Contents: diaphragm, soft seat, shutter guide, stem/bush seals and body gaskets. Maintain factory performance by replacing these items at prescribed intervals. Always record the installed spring, outlet setpoint and any monitor connection before teardown; this […]

Service parts for 1‑1/2″ NORVAL‑G. The NORVAL family offers low noise, compact direct regulation with balanced trim. Typical kits include diaphragm/seat assemblies, shaft seals and O‑rings. For units with monitor or external accessories, include associated seal sets during maintenance. Confirm spring range and head code from the nameplate; order kits matched to the installed range […]

General spare parts for a 2‑1/2″ NORVAL regulator used in district stations and industrial points. Kits restore sealing and regulation performance (diaphragm pack, soft seat, shutter/guide, body gaskets). Confirm head code and spring range from nameplate before ordering to ensure correct kit selection.