The Rothenberger RP30 is a compact 30 bar pressure testing pump built for domestic pipework and underfloor heating systems. Comes with a steel reinforced test hose to eliminate false readings from hose bulge. Simple single-valve operation, 4.5 litre tank.
The Rothenberger RP30 bar testing pump is a no-nonsense pressure testing tool built for plumbers working on domestic installations. Whether you’re commissioning a new underfloor heating system, testing copper pipework after a refit, or checking a system before handover, the RP30 handles it cleanly. Max pressure is 30 bar (420 PSI), which covers everything you’d encounter in typical residential work without you needing to think twice about whether it’ll reach.
The pump runs on a single-valve system, which keeps operation simple and reduces the chance of user error mid-test. There’s a 4.5 litre water tank built in, more than adequate for filling and pressurising a domestic loop without constantly stopping to top up. Connection is R1/2in BSPT, which is about as standard as it gets for this type of work.
Why the Steel Test Hose Matters on the Rothenberger RP30
One thing worth highlighting is the steel reinforced test hose supplied with the RP30. On cheaper pumps with standard rubber hoses, the hose itself can bulge under pressure, which gives you a false reading and leaves you chasing a leak that isn’t there. The steel braid prevents that. It’s a small detail that saves a lot of frustration on site, especially when a customer is watching over your shoulder waiting for the pressure test certificate.
Built for Tight Spaces
The tank is made from ABS plastic, impact resistant and light enough to carry easily. The overall dimensions are compact, which matters more than people expect. Plant rooms, airing cupboards, and underfloor screed installations rarely leave you much room to manoeuvre, and lugging a full-size pump into a tight space is nobody’s idea of a good day. The RP30 fits where it needs to fit.
Rothenberger equipment has a long track record in the plumbing trade, and the RP30 is a straightforward, well-thought-out tool for a job that needs to be done right. Simple to use, easy to transport, and built to give you accurate results you can sign off on with confidence.
Pro Tip: Always fill the RP30 with clean water before the test and bleed any air from the system first, trapped air compresses under pressure and can cause misleading gauge fluctuations that look like a pressure drop but aren't one.
The RP30 is used primarily by plumbers and heating engineers for pressure testing domestic pipework systems ahead of commissioning or handover. It's well suited to underfloor heating loops, central heating circuits, and cold water supply runs where a documented pressure test is required. The compact build makes it practical for testing in confined locations including airing cupboards, under staircases, and within floor voids where larger equipment simply won't go.
Best For
Domestic pipework pressure testing
Underfloor heating system commissioning
Central heating circuit testing
Cold water supply testing
Pre-handover system checks
Compatible With
R1/2in BSPT connections
Standard domestic heating systems
Underfloor heating manifolds
Copper and plastic pipework systems
Key Specifications
Max pressure: 30 bar / 420 PSI
Tank capacity: 4.5 litres
Connection: R1/2in BSPT
Tank material: ABS plastic (impact resistant)
Includes steel reinforced test hose
Single-valve operation
Not suitable for: Not intended for commercial or industrial high-pressure systems requiring test pressures above 30 bar. Not suitable for use with compressed air or gas pressure testing.
Fill the tank with clean water, connect the steel test hose to the system outlet, and open the system valve. Pump up to the required test pressure using the single-valve handle, then close the valve and monitor the gauge. A stable reading over the required dwell period confirms the system is sound. Log the results before disconnecting.
Fill the 4.5 litre tank with clean, fresh water before starting
Connect the steel reinforced test hose to the system using the R1/2in BSPT fitting
Bleed the system to remove trapped air before pressurising
Pump the handle to build pressure up to the required test level
Close the valve once target pressure is reached
Monitor the pressure gauge over the required dwell period
Record the start and end pressure readings for your test certificate
Release pressure safely before disconnecting the hose
Does the RP30 come with everything needed to carry out a pressure test?
Yes, it comes supplied with a steel reinforced test hose, which is the key accessory for accurate testing. You will need to provide the appropriate fittings or adaptors to match your specific system connection if it differs from R1/2in BSPT.
Why does the RP30 use a steel reinforced hose rather than a standard rubber one?
Standard rubber hoses can expand slightly under pressure, which shows up as a false pressure drop on the gauge. The steel braid prevents this, so any drop you see is a genuine indication of a leak in the system rather than the hose absorbing pressure.
The Rothenberger RP30 (ref 6.1130) is a manually operated hydraulic pressure test pump rated to 30 bar (420 PSI). The tank body is moulded from ABS plastic, offering impact resistance without the weight of a metal alternative. The supplied test hose is steel reinforced to prevent hose expansion under load. Connection thread is R1/2in BSPT, conforming to standard UK plumbing fitting conventions.
Model
RP30
Reference
6.1130
Maximum Pressure
30 bar / 420 PSI
Tank Capacity
4.5 litres
Connection Thread
R1/2in BSPT
Tank Material
ABS plastic
Supplied With
Steel reinforced test hose
Operation
Single-valve manual pump
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