GasGuard GG20 Specifications: Complete Technical Data

Updated 2026-10-07 · Sourced from ELAFLEX documentation

Short answer: The GasGuard GG20 is a 1¾" ACME LPG nozzle with a 160 mm (6.3 in) connector nut. Max working pressure 25 bar (362 psi), burst pressure above 100 bar (1450 psi), temperature range −40 °C to +110 °C (−40 °F to 230 °F), weight about 2.0 kg (4.4 lb). Flow is 63 L/min for the GG20 and 60 L/min for the GG20H and GG20DN at 12 bar. It is UL listed to UL 125 and built to AS/NZS 1596, AS/NZS 1425 and EN 12806 coupling dimensions.

Core ratings

Coupling	1¾" ACME thread to AS/NZS 1596, AS/NZS 1425, EN 12806
Nozzle reach	160 mm (6.3 in) connector nut; 35 mm (1.4 in) longer than the GG1
Media	LPG: propane, butane and their mixtures
Max working pressure	25 bar / 2500 kPa / 362 psi
Burst pressure	>100 bar / >1450 psi
Temperature range	−40 °C to +110 °C (−40 °F to 230 °F)
Flow at 12 bar system pressure	GG20 63 L/min; GG20H and GG20DN 60 L/min
Release volume on valve closure	GG20 1.9 cm³; GG20H and GG20DN 1.7 cm³
Weight incl. swivel	≈2.0 kg (4.4 lb)
Inlet	Stainless swivel, ½" NPT female (15 mm) or ¾" NPT female (20 mm)
Strainer	300 µm / 50 mesh, POM, fitted as standard (standard since July 2014)
Listing	Underwriters Laboratories, UL 125

Two small conflicts in ELAFLEX's own documents: the operating manual prints the temperature range as "−40 °F to 131 °F", but +110 °C converts to 230 °F, so the Fahrenheit figure in the manual is a misprint. The GasGuard brochure lists the GG20 at 1.9 kg while the data sheet and catalogue say ≈2.0 kg. The manual also gives a general maximum flow of 50 to 70 L/min across GG1 and GG20 types, depending on configuration.

Materials

Nozzle body	Aluminum, with PVC "comfigrip" cold-protection grip
Connector	High-strength aluminum alloy casting with stainless steel ACME thread insert; coupling nut aluminum/stainless with ratchet safety system
Swivel	Stainless steel
Valve body	Zinc-chromated steel
Internal parts	Stainless steel, acetal resin (POM) and polyamide (PA)
Lever	Polyamide; optional hold-open latch in aluminum
Seals	Low-temperature NBR, low-temperature Viton®, polyurethane

Built-in safety functions

Cannot discharge LPG to atmosphere if the lever is pulled while the nozzle is not coupled.
Seals safely even if the fill point gasket is missing.
Guided connector nut with extended thread helps align the nozzle with the fill point.
Strainer stops contaminants from upstream before they reach the vehicle or tank.

Pressure drop

ELAFLEX publishes a pressure drop curve for the GG20 family, measured at the National Measurement Institute in Sydney using common adapters without check valves. ELAFLEX warns that real vehicle connections and adapters vary and can change the result, so treat rated flow as a lab figure. The curve is on catalogue page 570.

Quick answers

What is the maximum pressure of the GG20?

25 bar (362 psi) working pressure; burst pressure is above 100 bar (1450 psi).

How heavy is the GG20?

About 2.0 kg (4.4 lb) including the swivel, per the ELAFLEX data sheet and catalogue.