---
title: Standard Centrifugal Pump Specification Data
doc_type: Specification Data Sheet
tags: [63E31-B, 63E32-B, Centrifugal Pump]
summary: This document provides specification data for Gorman-Rupp Standard Centrifugal Pumps, models 63E31-B and 63E32-B, including materials, dimensions, weights, and performance notes.
---
**General Information**
*   **Manufacturer:** Gorman-Rupp Pumps
*   **Document Date:** October 2023
*   **Section:** 70
*   **Models:** 63E31-B, 63E32-B

**Pump Specifications**
*   **Type:** Standard Centrifugal Pump, Basic Pedestal Models
*   **Size:** 4" x 3" (102 mm x 76 mm) Flanged
*   **Casing (63E31-B):** Ductile Iron 65-45-12
*   **Casing (63E32-B):** Cast Steel 70-36
*   **Maximum Operating Pressure:** 179 psi (1234 kPa)
*   **Impeller Type:** Enclosed, Five Vane
*   **Impeller Material:** Aluminum Alloy SG70A-T6
*   **Solids Handling:** 3/8" (9.5 mm) Diameter Spherical Solids
*   **Impeller Shaft Material:** Carbon Steel 1045
*   **Bearing Housing Material:** Ductile Iron 65-45-12
*   **Bearing Housing Lubrication:** Grease
*   **Body Cover (63E31-B):** Ductile Iron 65-45-12
*   **Body Cover (63E32-B):** Cast Steel 70-36
*   **Radial and Thrust Bearings:** Sealed Single Row Ball
*   **Gaskets:** Buna-N
*   **Hardware:** Standard Plated Steel

**Seal Detail**
*   **Type:** 21, Mechanical Self-Lubricated
*   **Rotating Face Material:** Carbon
*   **Stationary Face Material:** Ni-Resist
*   **Elastomers:** Fluorocarbon (DuPont Viton or Equivalent)
*   **Cage and Spring Material:** Stainless Steel 18-8
*   **Maximum Liquid Temperature:** 160 F (71 C)

**Optional Equipment**
*   150# Steel 4" NPT Suction and 3" NPT Discharge Flange Kit
*   Copper Alloy C93400 Impeller
*   PTFE Seal

**Approximate Dimensions and Weights**
*   **Model 63E31-B**
    *   **Net Weight:** 213 LBS (96.6 KG)
    *   **Shipping Weight:** 236 LBS (107 KG)
    *   **Export Crate:** 12.8 CU. FT. (0.36 CU. M)
*   **Model 63E32-B**
    *   **Net Weight:** 255 LBS (115.7 KG)
    *   **Shipping Weight:** 270 LBS (122.5 KG)
    *   **Export Crate:** 12.8 CU. FT. (0.36 CU. M)

**Performance Curve Notes**
*   60 HERTZ PERFORMANCE BASED ON WATER TRIMMED IMPELLER
*   50 HERTZ PERFORMANCE BASED ON WATER TRIMMED IMPELLER
*   60 HERTZ PERFORMANCE BASED ON PETROLEUM TRIMMED IMPELLER
*   50 HERTZ PERFORMANCE BASED ON PETROLEUM TRIMMED IMPELLER