First, Identify Your Core Requirements
Before selecting, clarify the usage scenarios and key metrics to avoid blind choices:
1. Applicable Scenarios
◦ Home Use: Primarily for self-testing home plumbing and underfloor heating systems. Opt for portable, entry-level models.
◦ Construction Scenarios: For high-flow, high-pressure demands like construction sites or fire protection pipelines, choose industrial-grade, high-displacement professional models.
2. Key Parameters
◦ Rated Pressure: Household scenarios typically require 10–25 bar (1–2.5 MPa) for standard needs; industrial or specialized pipelines (e.g., high-pressure fire hoses) need 30–100 bar models.
◦ Tank Capacity: Small tanks (2–5L) suit localized pressure testing, while large tanks (8–20L) benefit long-distance, large-diameter pipe systems by reducing frequent refilling.
◦ Flow Efficiency: Pumps with high-displacement piston designs deliver greater water volume per stroke, significantly accelerating pressure buildup in large pipelines.
II. Quality Assessment of Core Components
The durability and reliability of manual pressure test pumps hinge entirely on the materials and craftsmanship of their core components:
3. Pump Body and Water Tank
◦ Prioritize thickened cold-rolled steel plates with powder coating or baked paint finishes for rust and corrosion resistance, ensuring long-term water storage.
◦ Water tank welds must be smooth and burr-free with excellent sealing to prevent leaks that could compromise test results.
4. Piston and Seals
◦ Piston materials should be brass or stainless steel, offering wear resistance and rust prevention to extend equipment lifespan.
◦ Seals should utilize nitrile rubber or fluororubber, which provide superior aging resistance and pressure tolerance, preventing pressure loss due to seal failure.
5. Pressure Gauge and Connecting Components
◦ Select pressure gauges with accuracy class 1.6 or higher. The dial must be clear with marked pressure ranges. Premium models may include shock resistance for harsh construction site conditions.
◦ High-pressure hoses must be oil-resistant and pressure-rated rubber tubing. Brass fittings ensure secure, corrosion-resistant connections to prevent detachment or leakage during testing.
III. Structural and Functional Verification of Pressure Test Pumps
6. Pressure Rod Design
Prioritize collapsible or telescopic pressure rods for convenient storage and portability. Handles should feature non-slip rubber grips to enhance operational comfort and reduce fatigue during extended use.
◦ Optimize the lever ratio to achieve sufficient pressure with minimal force, thereby improving testing efficiency.
7. Safety Protection Devices
◦ Professional models should include safety valves that automatically relieve pressure when exceeding rated values, safeguarding the pump and piping system.
◦ Some models feature check valves to prevent backflow after testing, maintaining stable pipeline pressure for pressure retention testing.
8. Portability Design
◦ For household models, choose products with handles or lightweight designs; Engineering models should prioritize models with wheels or reinforced handles for easy transport on construction sites.
IV. Brand and After-Sales Capability Screening
9. Brand Reputation
◦ Prioritize brands specializing in pipeline tools, such as Bohui.
10. After-Sales Service
◦ Confirm the product offers at least a 12-month warranty and request the seller to clarify the replacement policy for wear-prone parts (e.g., seals, pressure gauges).
◦ Select brands offering technical support to ensure professional guidance during pressure testing failures or parameter queries.
V. On-Site Testing and Detailed Inspection
11. Appearance and Workmanship
◦ Inspect the pump body for scratches, paint peeling, uniform welds, and secure fasteners (screws, etc.) without looseness.
12. No-Load Test
◦ Manually press the pressure lever to assess smooth operation without sticking or abnormal noises; verify flexible lever reset, which reflects piston-cylinder precision.
13. Pressure Holding Test
◦ Connect hoses and pressurize to 80% of rated pressure. After closing valves, observe the pressure gauge—pressure drop should not exceed 0.1MPa within 10 minutes to validate seal integrity.
Bohui's 0-60 bar series manual test pumps feature:
◦High-Precision Pressure Gauge
Equipped with a 0-6 MPa range gauge featuring a sensitive pointer and clear readings for accurate assessment of pipeline pressure capacity.
◦Superior Materials
The pump surface features powder coating or stainless steel construction. The pump body undergoes deburring, sandhole removal, and precision grinding. The powder-coated surface is oven-baked for environmental compliance, delivering a thick, uniform coating that is smooth, durable, wear-resistant, and corrosion-resistant.
◦User-Friendly Operation
l Ergonomic handle design enables effortless pressurization. Includes built-in seals and multiple adapters for various pipe diameters, ensuring easy installation.
◦ Meets your requirements for medium and low pressure ranges. Bohui has specialized in pressure testing pump production for over two decades, manufacturing pumps within the 0-100 bar range. Bohui’s pressure testing pump series has been market-proven over years, with all pumps undergoing 100% quality testing before shipment, ensuring consistent product quality. Positive user feedback is evident on e-commerce platforms and industry forums.Bohui can also customize various pressure testing pumps according to customer requirements.