YSM G196 vs Goulds 3196: The ASME B73.1 Envelope They Share and What Is Confirmed Before Order

What “Goulds 3196 equivalent” means on this page

On ysmpumps.com the words “replacement”, “equivalent” and “interchangeable” refer to non-OEM pumps built to the named OEM dimensional pattern under ASME B73.1, same size and frame, confirmed against the nameplate and the installed pump drawing before order. Three things stay apart:

1. What ASME B73.1 sets for the same designation: mounting dimensions, nozzle size and location, input shaft, baseplate and foundation bolt holes.
2. What YSM designs: hydraulics, impeller, materials, seal chamber and bearing frame, compared on curves, certificates and drawings.
3. What only the installed pump can tell: nameplate, GA drawing, coupling, rotation, seal and impeller trim, sent by the buyer for review.

From OEM literature: the Goulds 3196 was introduced in 1961, meets B73.1M and is offered on the i-FRAME power ends STi, MTi, LTi, XLTi and i17. STX, MTX, LTX and XLTX are legacy frame names as used in the aftermarket.

The G196: 24 general-purpose sizes on power ends for the Goulds STX, MTX, LTX and XLTX frame patterns; series maximums 7,000 US gpm (1,590 m3/h), 730 ft (223 m), 700 °F (371 °C), 375 psig (2,586 kPa); individual size, impeller diameter, material and seal arrangement set the limits for a given pump (G196 Series overview: frames, sizes and materials).

What ASME B73.1 fixes: the shared installation envelope

The ASME B73.1 scope statement on asme.org aims for the same installation envelope for pumps of the same dimension designation: mounting dimensions, nozzle size and location, input shaft, baseplate and foundation bolt holes. Interchange of a specific pump is confirmed against the nameplate and the installed pump drawing before order. See ANSI/ASME B73.1 explained.

The standard works through designations (AA, AB, AC, A05 and so on to A120), each mapping to one or more hydraulic sizes. Published tables for the same designation can differ, so the certified drawing governs.

Size code: discharge x suction, then the nominal impeller diameter, in inches (3x4-8 is 3 in discharge, 4 in suction, 8 in impeller). Durco Mark 3 pattern pumps write suction first, so the designation, not the size string, is the comparison key.

The G196 installation dimension sheet with the lettered drawing is on G196 installation dimensions and interchangeability tables (Technical Downloads); the table below gives sizes and nominal envelope values by designation.

CP: shaft coupling end to suction flange face. D: shaft centreline height above the underside of the feet. X: shaft centreline to discharge flange face. E1 and E2: full centre-to-centre spacing of the foot bolt holes across the shaft (ASME 2E1 and 2E2; 0 means a single hole on the centreline). F: distance along the shaft between the two bolt-hole rows. U: shaft diameter at the coupling. Y: discharge nozzle centreline to suction flange face. H: bolt-hole diameter.

Goulds 4x6-17 (A105) uses the i17 power end and is available on request, confirm against the nameplate and installed pump drawing.

Low-flow, self-priming and 17-inch sizes were developed after the original ASME B73.1 designation table was set, which is why the 1991 dimension table cited above has no entries for them (the 17-inch sizes in the table above are placed by designation from the Goulds brochure; their installation dimensions are confirmed on the certified drawing); where no current OEM table gives a designation either, as for Goulds 3x4-17 (available on request, confirm against the nameplate and installed pump drawing), installation dimensions come from the certified drawing.

Flange pressure class and facing, nozzle orientation, auxiliary connections, the installed pump’s rotation and the coupling (hub bore against the shaft extension U, keyway, spacer length) are read from the GA drawing and confirmed before order.

What is YSM’s own design: hydraulics, materials, seal chamber, bearing frame

As the site’s B73.1 explainer puts it, “B73.1 is a dimensional and mechanical standard, not a performance specification”.

Hydraulics. G196 coverage curves are YSM’s own and are on Technical Downloads; the buyer compares head, efficiency, NPSHr and BEP position at normal, minimum and maximum duty.

Impeller. Open impeller with external clearance adjustment on the 3196 pattern. The pattern and vane profile are YSM’s; where an impeller is re-patterned or reverse engineered, cast surfaces and vane profiles are digitised by 3D scanning or CMM and the hydraulics are checked against the pump curve.

Materials. Published G196 wet-end alloys: WCB, CF8M, CD4MCu, CN7M, Monel, Nickel, Hastelloy B and C, Titanium and Zirconium alloy; availability by component and size is confirmed at quotation. Shafts SAE 4140 or 316SS with sleeves in the wet-end alloy; bearing frames cast iron (ductile iron on the STX-pattern power end), adapters ductile iron. Higher alloys are produced on the same patterns as the stainless grades, so the alloy does not change the envelope; fit is still confirmed against the nameplate and the installed pump drawing.

Seal chamber. B73.1 fixes only a minimum seal chamber envelope. The G196 offers standard, large-bore and taper-bore chambers, corresponding to the Goulds standard bore, BigBore and TaperBore PLUS patterns (names used only as dimensional-pattern identifiers; fit confirmed against the nameplate and the installed pump drawing), plus a packed box; see Mechanical seals for process pumps.

Bearing frame and power end. SKF or equivalent bearings, labyrinth bearing isolators, sleeved or sleeveless shafts, power-end references G1119/G1201 (STX pattern) through G3119/G3201 (XLTX pattern).

Internal part-for-part fit. Fitting a G196 casing or impeller to a 3196 frame or shaft is outside the standard and is reviewed per part against the buyer’s drawing and Replacement ANSI pump parts and OEM part-number cross-reference.

Frame groups: Goulds STX / MTX / LTX / XLTX versus YSM G196 frames and sizes

MTX and LTX carry the same hydraulic sizes (designations A05 to A80), so a 3x4-13 does not identify the power end. The frame is read from the nameplate, serial record or bearing frame casting; it decides which YSM power end (G2xxx or GLTxxx), which power-end parts and which coupling-end U apply.

The G196 General Purpose, Low Flow, G3796 and G196 CV pumps, each built to its Goulds dimensional pattern, use G196 pattern power ends (see the Low Flow and G3796 pages for frames); part-level fit is confirmed per part number and drawing before order.

Nameplate and drawing data required to confirm interchange

Photograph both the pump and motor nameplates, not only the motor plate (How to read a pump nameplate and drawing). Interchange is confirmed against your nameplate data before any order is accepted; a reference number alone is not treated as a fit conclusion.

A nameplate cannot tell the current impeller trim, internal wear, every wetted material, seal-face materials, duty match or whether two internal parts interchange. Reverse engineering of pump parts from samples or drawings covers cases with no drawing. See also What information is needed before replacing an ANSI process pump and the Urgent ANSI pump parts RFQ checklist.

Confirm before you order

1. Pump nameplate photographed: model, size, frame, serial number and material code readable.
2. Designation identified from the size; frame read from the nameplate or bearing frame.
3. D, CP and the foot and base bolt pattern checked against the GA drawing or measured on site.
4. Nozzle size, class, facing, orientation and auxiliary connections read from the drawing or casing.
5. Coupling hub bore, keyway and spacer length checked against U on the certified drawing for the confirmed power end.
6. Rotation direction, viewed from the coupling end, confirmed against the casing arrow and motor; G196 standard rotation is clockwise, reverse-rotation builds on request.
7. Impeller diameter as trimmed, duty point (normal, minimum, maximum), liquid data and NPSHa supplied.
8. Seal make, model, cartridge or component, chamber type, flush plan and sleeve diameter recorded.
9. Motor frame, power, speed and base bolt pattern recorded.
10. Scope decided: complete pump, bare wet end or parts, with part numbers for any internal part.

Replacement scopes: complete pump, bare wet end or parts

Complete pump. A bare-shaft G196 built to the Goulds 3196 dimensional pattern under ASME B73.1. Whether the existing base, motor, coupling and piping can be retained is decided after the nameplate and installed pump drawing review. See G196 ANSI chemical process pump (product page).

Bare wet end. Casing, impeller and cover in the wet-end alloy, with a ductile iron adapter, fitted to an installed power end only after a part-level review of the casing-to-frame, impeller-to-shaft and cover-to-chamber interfaces.

Replacement parts. Part-for-part fit is outside B73.1. Wet-end and power-end parts are cross-referenced by OEM part number, and each part is confirmed against the nameplate, part number and drawing before order.

Lead times, warranty, payment and Incoterms are published on Commercial terms: lead time, warranty, payment, Incoterms. Export packing is non-fumigation wooden export cases, with small parts in inner cartons. Quotations follow a reviewed selection of size and frame, materials, sealing, scope and quantity, not a model name.

How YSM builds and verifies a G196 and what documents ship with it

The G196 is made to YSM’s own drawings and patterns at the company’s Zibo site of 3,000 m2, in operation since 2010 with about 35 staff; equipment is listed on the Factory review: Zibo site and equipment page.

YSM’s capabilities include casting simulation before pouring and 3D-printed sand cores and moulds.

The inspection steps published on Certifications and quality: inspection process are:

1. Material verification by spectrometer or chemical analysis per heat.
2. Hydrostatic test of pressure-containing parts.
3. Dimensional inspection of machined parts and ASME B73.1 interface dimensions against the drawing, with the in-house CMM (Tornado NCA10158) for interface and fit dimensions.
4. Dynamic balancing of all impellers.
5. Performance testing of complete pumps on YSM’s own factory test benches (water medium, to 9,000 m3/h, 6 bar, 250 kW), with the test curve supplied on request.
6. Final inspection.

Witness testing at the factory and third-party inspection by SGS, Bureau Veritas or TÜV are available on request. Material certificates, balance reports and hydrostatic test reports are issued with the order, a dimensional inspection report can be issued with the order, and the GA drawing is reviewed before manufacture.

Related pumps and where to go next

Each G196 variant below is confirmed against the nameplate and the installed pump drawing before order.

• G196 Low Flow ANSI pump: built to the Goulds LF 3196 dimensional pattern under ASME B73.1, 3 sizes.
• G3796 self-priming ANSI pump: built to the Goulds 3796 dimensional pattern under ASME B73.1.
• G196 CV non-clog ANSI pump: built to the Goulds CV 3196 dimensional pattern under ASME B73.1.

The G196 is also supplied against other ASME B73.1 dimensional patterns in the same size and frame: Griswold 811 cross-reference page, Peerless 8196 cross-reference page, Summit 2196 cross-reference page, Aurora 3550 cross-reference page and PumpWorks PWA Gen2 cross-reference page. Each is confirmed against the nameplate and the installed pump drawing before order.

For a Durco Mark 3 pattern installation, see the reverse-vane D Mark III Series, built to the Durco Mark 3 dimensional pattern under ASME B73.1 and confirmed against the nameplate and the installed pump drawing before order. Related reading: the ANSI process pump FAQ and Goulds 3196 replacement pump manufacturers compared. To start a review, use Contact YSM Pumps with nameplate photos and duty data.