New Products & Info
NEW PRODUCT INTRODUCTION

BANSHEE 343 ULTRASONIC GAS LEAK DETECTOR
The Banshee343 is an advanced gas leak detection system utilizing four ultra-sensitive acoustic sensors which constantly monitor wide areas for ultrasound generated from the release of pressurized gas. Ideally suited for monitoring well ventilated outdoor environments, the Banshee343 has been engineered to withstand even the most extreme conditions while including features designed to optimize performance and reduce maintenance.
Ultrasonic (acoustic) gas leak detection technology has several advantages over conventional gas sensor technologies: it does not have to wait until a gas concentration has accumulated to potentially dangerous concentrations, it does not require a gas cloud to eventually make physical contact with a sensor, and the response is instantaneous for all gas types.
- Widest Area of Coverage, 40 Meter Radius Through Four independent Sensors
- Instantaneous Response To All Types of Gas Leaks (LEL or ppm)
- Wide Temperature Range: -55°C — +85°C
- SonicCAL System — Automated Self Test and Sensor Cleanse – Failsafe & Maintenance Free
- Analog, Relay, and RS485 Digital Modbus
- Certified Worldwide for Hazardous Locations
- Detection range: 25kHz to 100 kHz — Widest Dynamic Range Available, 50db — 140dB
- Innovative Mapping Tool Helps Operators Achieve Optimum Performance At Site Location
- Programmable Time Delays to Allow for Pressure Venting, Etc.
The Banshee343 detects deadly gas leaks at the speed of sound without being affected by inclement weather, wind direction, leak direction or any potential gas dilution. When utilized together with Net Safety point gas detection and our optical flame detection, a complete and comprehensive safety system is ensured.
ABOUT ULTRASONIC GAS LEAK DETECTION TECHNOLOGY
Ultrasonic (acoustic) gas leak detection technology functions through the constant monitoring of wide areas by advanced acoustic sensors specially tuned to process ultrasound emitted from pressurized gas leaks. This detection technology has several advantages: it does not have to wait until a gas concentration has accumulated to potentially dangerous concentrations, it does not require a gas cloud to eventually make physical contact with a sensor, and the response is instantaneous for all gas types.
Simply put, the ultrasonic leak detector only triggers an alarm when inaudible, ultrasound is detected (between 25 – 100 kHz) — which is only produced with the release of highly pressurized gas. This makes for extremely reliable and efficient performance by the detection system as there is no poisoning of sensors, it never requires field calibration, and all background noises are accurately filtered.
The Banshee343 detects deadly gas leaks at the speed of sound without being affected by inclement weather, wind direction, leak direction or any potential gas dilution. When utilized together with Net Safety point gas detection and our optical flame detection, a complete and comprehensive safety system is ensured
ULTRASONIC DETECTION COVERAGE
In order to achieve optimum performance a site mapping survey is necessary to check background noise levels, ensure alarm levels are set above the normal background conditions, programming any necessary time delays to allow for pressure venting, and to ensure all potential leak areas have coverage by a detector footprint. Net Safety technicians are available during installation and commissioning as well as providing full training with our NSM-MT-01 mapping tool.
NEW PRODUCT INTRODUCTION
For leak detection, confined space operations, purging operations, or fixed systems.
V!SA 5 GAS UNIT
A robust and accurate portable gas detector, the V!SA provides unrivalled protection in confined space applications with audible and visual alarms in the event of exposure to flammable or toxic gases.
Detecting and displaying up to 5 gases simultaneously using “plug and play” sensor technology, the V!SA is suitable for a host of applications in a variety of industries using infra-red, PID and catalytic sensors.
Pre-entry checking can be carried out with the optional internal sampling pump and diffusion operation, ensuring maximum battery life in confined spaces.
Features
GT SERIES 7 OPERATION GAS UNIT
Designed for the gas industry, the GT series are multi application instruments, satisfying all the needs of service technicians within a single unit. With 7 modes of operation, the GT series is the most versatile instrument available for working with gas.
The GT Series is suitable for the following operations:
Features
NEW PRODUCT INTRODUCTION
POSV - PILOT OPERATED SAFETY VALVE
LESER introduces pilot-operated safety valves for oil & gas, petrochemical and pump applications
In August 2010, LESER introduced a new product series: the pilot-operated safety valve. Both pop-action (Series 810) and modulate-action valves (Series 820) are available.
The typical application areas of the pilot-operated safety valve (POSV) are refineries and gas processing plants, compressors in gas pipeline systems and offshore applications. The own-media-controlled POSV offers the advantage that the plant can be run close to the set pressure of the valve. This leads to an increase in the capacity utilization and consequently of the efficiency of the plant. Furthermore, POSVs allow higher external back pressures than spring-loaded safety valves.
By means of the harmonized standard DIN EN ISO 4126-4 pilot-operated safety valves are now also approved in Europe. For decades already their technology has been proven in the American market and in the Middle East.
The LESER POSV will be available with a short 4
week lead time ex works. As a special design feature, the tubing between the pilot valve and the main valve is integrated in the main valve cover, reducing the risk of damage or freezing. The backflow preventer is included as standard.
The POSV is part of the LESER product group High Efficiency. This group unites all products with increase the efficiency and the productivity of the plant.
Series 810 – Pop Action
Series 820 – Modulate Action
Characteristics at a glance:
- Design in compliance with API 526
- Valve sizes from DN 25 to DN 200 (1″ x 2″ to 8″ x 10″)
- Orifice D to T
- Flange pressure ranges according to DIN EN PN 10 – PN 63 (DIN EN), 2,5-63 bar (36-913 psig)
- Flange pressure ranges according to ASME B16.34 CL150 – CL600, 36-1480 psig (2,5-102 bar)
- Approval according to ASME VIII, PED and VdTÜV
- Body materials WCB, CF8M, LCB; 1.0619, 1.4408
Advantages at a glance:
- Tightness guaranteed up to 97% of set pressure – operating pressure can be close to set pressure
- Shorter blowdown for less product loss
- Lower risk of damage due to a reduction of the exterior piping
- Backflow preventer included as standard
- Fast availability
NEW PRODUCT INTRODUCTION

RA SERIES REVERSE-ACTING RUPTURE DISK SYSTEM
The RA Series offers a single unique pre-torque holder design for use with multiple types of ZOOK Reverse-Acting metal rupture disks.
RAH PRE-TORQUE RUPTURE DISK HOLDER
- Pre-Torque Design allows
…pre-assembly of a rupture disk into a holder
prior to field installation
…removal of the assembly from the piping system
for inspection without disturbing the seal integrity
of the Rupture Disk
…mounting between soft or fragile material
flanges (PVC, Glass, etc.) and sealed by using a
soft gasket material with low torque on the
companion flange boltingBest choice for low and
intermediate burst ratings - Mounts directly between standard ASME B16.5,
PN, or JIS flanges - Sizes 1” thru 12”
- Standard Holder Materials: Carbon Steel, 316SS,
Hastelloy
RA4 SERIES RUPTURE DISK
- Solid metal Scoreless disk designed for Non-
Fragmentation - Best choice for Low range of burst ratings (3psi to
40 psi) - Operating ratios up to 90% of the low end of burst
tolerance - ASME UD, CE, and TUV compliance available
(Liquid and Gas Service)
RA6 SERIES RUPTURE DISK
- Solid metal Scoreless disk designed for Non-
Fragmentation - Best choice for Intermediate range of burst
ratings (12psi to 200 psi) - Standard operating ratio of 90% of the marked
rating on disk tag. (Higher operating ratio
available upon request) - ASME UD, CE, and TUV compliance available
(Liquid and Gas Service)
RA8 SERIES RUPTURE DISK
- Solid metal Scoreless disk designed for Non-
Fragmentation - Best choice for Upper range of burst ratings (26psi
to 1000 psi) - Standard operating ratio of 90% of the marked
rating on disk tag. (Higher operating ratio
available upon request) - ASME UD, CE, and TUV compliance available
(Liquid and Gas Service)
RAX SERIES RUPTURE DISK
- Solid metal Cross-Scored disk designed for Non-
Fragmentation - Best choice for Upper range of burst ratings (27psi
to 1000 psi) - Standard operating ratio of 90% of the marked
rating on disk tag. (Higher operating ratio
available upon request) - ASME UD, CE, and TUV compliance available (GAS
SERVICE ONLY)
