Pneumatic Diaphragm Pump Full Process Selection Parameter Table for Oil and Gas Industry

Crude oil extraction process (land/offshore oil fields)

application scenarios	Recommended traffic range	working pressure	Pump body material	Diaphragm material	Material of valve ball/valve seat	Adaptation aperture	Key selection criteria
Oil well pumping (low-yield/sand-containing wells)	5～30 m³/h	0.4～0.7 MPa	316L stainless steel/cast steel	Nitrile rubber (NBR)/Polytetrafluoroethylene (PTFE)	Ceramic/stainless steel	DN25～DN50	High self-priming (≥7m), sand-resistant, anti-gas lock
Drilling Mud/Fracking Fluid Transportation	20～80 m³/h	0.5～0.8 MPa	Wear-resistant cast iron/gum-lined lining	Polyurethane (PU)/Nitrile Rubber	Hard alloy/ceramic	DN40～DN80	Wear-resistant, large channel, resistant to solid-phase particles
Wellhead crude oil gathering and transportation	10～50 m³/h	0.4～0.6 MPa	304/316 stainless steel	Fluororubber (FKM)/PTFE	Stainless steel/ceramic	DN32～DN65	Explosion-proof, leak-proof, and resistant to gas-containing crude oil
Wax Removal/Well Repair Fluid Delivery for Oil Wells	3～15 m³/h	0.3～0.6 MPa	316L stainless steel	PTFE/ fluorinerubber	stainless steel	DN20～DN40	Chemical corrosion-resistant, flow rate adjustable, portable
Tank Sludge Removal/Waste Oil Recovery	5～25 m³/h	0.4～0.7 MPa	Cast steel/gum-lined lining	Wear-resistant nitrile rubber	Ceramic/Hard Alloy	DN25～DN50	Capable of dry operation, resistant to high solid content, and exhibits strong self-priming capability

Refining processing stage (refinery distillation/conversion/blending)

application scenarios	Recommended traffic range	working pressure	Pump body material	Diaphragm material	Material of valve ball/valve seat	Adaptation aperture	Key selection criteria
Reduced Pressure Residual Oil/Asphalt Transportation	15～60 m³/h	0.5～0.8 MPa	Cast steel/316L stainless steel	fluorinerubber /PTFE	hard metal	DN40～DN80	Heat-resistant (≤150°C), high-viscosity resistant
Catalytic cracking catalyst slurry transportation	10～40 m³/h	0.4～0.7 MPa	Wear-resistant rubber-coated/316L	polyurethane /PTFE	Ceramic/Hard Alloy	DN32～DN65	Wear-resistant, anti-clogging, and resistant to solid-phase particles
Naphtha/Benzene Component Transportation	20～100 m³/h	0.3～0.6 MPa	316L stainless steel/aluminum alloy	PTFE/ fluorinerubber	Stainless steel/ceramic	DN50～DN100	Essentially explosion-proof, low leakage, and resistant to light hydrocarbons
Precision dosing of oil additives	0.5～5 m³/h	0.2～0.5 MPa	316L stainless steel	PTFE	Stainless steel / PTFE	DN15～DN25	Precision regulation of low flow rate, resistant to chemical corrosion
Treatment of oily wastewater/soil-contaminated oil	8～30 m³/h	0.4～0.6 MPa	Cast iron lining/gelatin/304 stainless steel	acrylonitrile-butadiene rubber /PU	pottery and porcelain	DN25～DN50	Oil-containing and solid-containing, easy to maintain, and anti-clogging

Storage, Transportation, and Distribution of Refined Oil Products

application scenarios	Recommended traffic range	working pressure	Pump body material	Diaphragm material	Material of valve ball/valve seat	Adaptation aperture	Key selection criteria
Refinery/Oil Depot Product Oil Loading and Unloading	30～120 m³/h	0.3～0.6 MPa	316L stainless steel/aluminum alloy	PTFE/ fluorinerubber	Stainless steel/ceramic	DN50～DN100	High flow rate, explosion-proof, rapid loading and unloading
Tanker/tanker unloading	20～80 m³/h	0.4～0.7 MPa	316L stainless steel	fluorinerubber /PTFE	stainless steel	DN40～DN80	Strong self-absorption, mobile, and resistant to volatile oil gases
Tanker unloading at underground gas station	15～40 m³/h	0.3～0.5 MPa	316L stainless steel/aluminum alloy	PTFE	Stainless steel / PTFE	DN32～DN65	Explosion-proof, low-noise, suitable for hazardous areas
Tank transfer/transfer operation in oil storage facility	25～90 m³/h	0.4～0.6 MPa	304/316 stainless steel	fluorinerubber	stainless steel	DN50～DN100	Adjustable flow rate, leak-free, long-term operation
Oil vapor recovery system transportation	3～12 m³/h	0.2～0.4 MPa	316L stainless steel	PTFE	stainless steel	DN20～DN32	Resistant to oil vapor corrosion, tight sealing, and low energy consumption

Assistance and Emergency Response Phase

application scenarios	Recommended traffic range	working pressure	Pump body material	Diaphragm material	Material of valve ball/valve seat	Adaptation aperture	Key selection criteria
Equipment cleaning/solvent delivery	2～10 m³/h	0.2～0.5 MPa	316L stainless steel	PTFE	Teflon/stainless steel	DN15～DN25	Resistant to cleaning solvents, portable, low flow rate
Emergency Recovery of Pipeline Leakage	5～20 m³/h	0.5～0.8 MPa	Cast steel/304	Wear-resistant nitrile rubber	pottery and porcelain	DN25～DN40	Emergency portable, resistant to contaminated media, and strong self-suction capability
Lubricating Oil/Hydraulic Oil Transportation	1～8 m³/h	0.2～0.4 MPa	316L stainless steel	acrylonitrile-butadiene rubber	stainless steel	DN15～DN25	Oil-resistant, low-flow rate, stable flow conveyance

General Notes on Model Selection (Compulsory Standards for Oil and Gas Industry)

1. Safety specifications: All hazardous areas (Zone 1/Zone 2) must employ pneumatic pumps without electrical components, featuring explosion-proof rating Ex d II BT4/CT4, designed for flammable and explosive oil-gas environments.

2. Material compatibility:

◦ Crude oil/Heavy oil: Preferred material 316L+ fluororubber/PTFE, featuring sulfur resistance, corrosion resistance, and high-temperature tolerance.

◦ Gasoline/diesel/light hydrocarbons: Select aluminum alloy/316L with PTFE coating for anti-volatility and leak-proof performance.

◦ Sand/solid-containing media: Rubber-lined/wear-resistant alloy + PU/ceramic valve components to extend service life.

3. Flow margin: The rated flow rate should be 1.2 to 1.5 times the process demand to compensate for pipeline pressure drop and gas supply fluctuations.

4. Gas source requirements: Standard working gas pressure ranges from 0.4 to 0.7 MPa, with a supply flow rate ≥1.5 times the pump’s gas consumption to ensure stable operation.

5. Temperature compatibility: Conventional type-20°C to 120°C; high-temperature media (slag oil) require high-temperature resistant type (≤180°C).