Service manual for Fisher 133 series gas regulators covering specifications, installation, adjustment, maintenance and parts ordering.
The Fisher 133 series gas regulator service manual provides detailed information on the specifications, operation principle, installation, over‑pressure protection, startup, adjustment, shutdown, maintenance and parts ordering for the 133H, 133L, 133Z and 133HP models. It is intended for qualified personnel who have received training or have sufficient experience with the equipment.
The manual includes safety warnings, required downstream control line dimensions, exhaust port protection, and step‑by‑step procedures for disassembly, inspection, replacement of seals, diaphragms, springs and other components, as well as re‑assembly instructions and torque specifications. This manual is written in Chinese.
| Operating temperature range | -29 to 66 °C |
|---|---|
| Maximum working inlet pressure (133H/133L/133Z) | 4.1 bar / 60 psig |
| Maximum emergency inlet pressure (all models) | 8.6 bar / 125 psig |
| Maximum outlet pressure (133H/133L/133Z) | 0.69 bar / 10 psig |
| Maximum outlet pressure (133HP) | 4.1 bar / 60 psig |
| Weight (NPT end‑connection) | 16 kg (35 lb) for 133H/133L/133Z |
| Weight (flanged end‑connection) | 18 kg (40 lb) for 133H/133L/133Z |
| Downstream control line minimum diameter | 12.7 mm (1/2 in) |
| Exhaust port connection (133H/133L/133Z) | 1 NPT (internal) with filter |
| Exhaust port connection (133HP) | 1/2 NPT (internal) with Fisher Y602‑7 exhaust component |
The downstream control line must be at least 12.7 mm (1/2 in) in diameter and installed 5 to 10 times the pipe diameter downstream of the regulator.
The regulator can operate from –29 °C up to 66 °C (–20 °F to 150 °F).
The maximum working inlet pressure for the 133H model is 4.1 bar (60 psig).