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Product photographs supplied by DENGFENG. Confirm the exact unit, nameplate and supplied configuration with your quotation.

GRACO / Pneumatic & Diaphragm Pumps

GRACO
D31211

Husky 307 acetal diaphragm pump with 3/8 in female NPT fluid connections and PTFE diaphragms.

Model: D31211
Request a Quote ↗Compare & SelectFull specifications

Include quantity, destination, required condition and delivery date. Pricing and availability are confirmed individually.

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What defines this model

Fluid section
Acetal
Diaphragm
PTFE/EPDM 2-piece
Ball / check valve
PTFE
Fluid connections
3/8 in female NPT
Maximum catalog flow
To be confirmedNot established in the reviewed model data.
Seat material
Acetal

Confirm this configuration

  • Published maximum-flow figures differ between manufacturer references. Confirm the supplied revision and performance curve; no single maximum-flow value is assigned here.

Compare nearby models

Closest listed configurations in GRACO Husky 307. These are comparison references; interchangeability has not been established.

Highlighted rows differ. On small screens, scroll the table sideways.

Configuration comparison for D31211
Selection factorThis modelD31211D3A211D31331D32911
Fluid sectionAcetalAcetalAcetalPolypropylene
DiaphragmPTFE/EPDM 2-piecePTFE/EPDM 2-piecePTFE/EPDM 2-piecePTFE/EPDM, two-piece
Ball / check valvePTFEPTFE316 stainless steelPTFE
Fluid connections3/8 in female NPT3/8 in BSPT3/8 in female NPT3/8 in female NPT
Maximum catalog flowTo be confirmedConfirm configurationNot established in the reviewed model data.To be confirmedConfirm configurationNot established in the reviewed model data.To be confirmedConfirm configurationNot established in the reviewed model data.Confirm applicable revision and performance curve
Seat materialAcetalAcetal316 stainless steelPolypropylene

How to check the fit

  1. Match all wetted materials

    Check the fluid, concentration, temperature and solids against the fluid section, diaphragm and ball/check-valve materials. Matching port size alone does not establish chemical compatibility.

  2. Match connections and operating duty

    Confirm the thread or flange standard, required flow at discharge pressure, air supply and suction conditions. Maximum catalog flow is not the delivered flow at every operating point.

Product information

Model & Configuration

Manufacturer catalog and model-code reference. Confirm the supplied unit against its nameplate and the applicable manual.

BrandGRACO
Model numberD31211
Product TypeAir-operated double-diaphragm pump
DriveCompressed air
Center Section MaterialPolypropylene
Maximum Air Pressure100 psi (7 bar)
Maximum Fluid Pressure100 psi (7 bar)
SeriesHusky 307
Fluid Section MaterialAcetal
Seat MaterialAcetal
Ball MaterialPTFE
Diaphragm MaterialPTFE/EPDM 2-piece
Fluid Inlet / Outlet3/8 in female NPT
Air Inlet1/4 in female NPT
Manifold ConfigurationEnd port

Selection & Installation

  • Confirm the complete nameplate, condition and configuration before placing an order.
  • Confirm fluid compatibility, wetted materials, connection standard and the complete pump configuration.
  • Manufacturer sources list different maximum-flow figures for this series. A single maximum-flow value is not published here; confirm the applicable manual and operating curve.
Manufacturer documentation

Reference information reviewed September 2026. Check the applicable revision for your equipment.

More in Pneumatic & Diaphragm Pumps

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D31331 supplier product photograph 1
Image for reference only

D31331

Air-operated double-diaphragm pump

Fluid section
Acetal
Diaphragm
PTFE/EPDM 2-piece
Ball / check valve
316 stainless steel
Fluid connections
3/8 in female NPT
Maximum catalog flow
To be confirmed
Seat material
316 stainless steel

Configuration check required

Details & selection
D32911 supplier product photograph 1
Image for reference only

D32911

Air-operated double-diaphragm pump

Fluid section
Polypropylene
Diaphragm
PTFE/EPDM, two-piece
Ball / check valve
PTFE
Fluid connections
3/8 in female NPT
Maximum catalog flow
Confirm applicable revision and performance curve
Seat material
Polypropylene

Configuration check required

Details & selection

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