Hirata Valve Gate Valve Replacement: Technical Information Required for Quotation

Sep 8

3 min read

Updated: Sep 15

Nichiboku's industrial Insights

Introduction

When an installed Hirata Valve Industry gate valve requires replacement, the complete original configuration must be identified before quotation.

Nominal size, pressure class or external appearance alone cannot establish interchangeability. Hirata Valve Industry manufactures valves according to customer specifications; therefore, dimensions, materials, operating conditions and construction details may vary between individual orders. (Hirata Valve gate valve replacement)

Hirata Valve Industry's manual gate valve, Class 150, size 90A, made from SCS13A, designed for precise technical replacements.

Confirmed Manufacturer Scope: Hirata Valve gate valve replacement

The following information is confirmed at the Hirata gate-valve product-family level. It does not define the specification of a particular installed valve.

Parameter	Confirmed Manufacturer Information
Manufacturer	Hirata Valve Industry Co., Ltd.
Product Category	Gate valve
Function	Full-open or full-closed flow isolation
Throttling Service	Not intended for intermediate-opening flow regulation
Nominal Pressure Range	150LB to 2500LB; 10K to 63K
Nominal Size Range	15A to 1500A; 1/2B to 60B
Operation Methods	Manual, pneumatic, motorized and other configurations
Body Material Families	Carbon steel, stainless steel, cast iron and other materials
Manufacturing Basis	Manufactured according to customer specifications

Available size depends on pressure rating and the required valve configuration. The official production range should therefore not be interpreted as confirmation that every pressure, size, material and connection combination is available.

Why Exact Replacement Identification Matters

A gate valve is used to permit flow in the fully open position or isolate the line in the fully closed position. It should not be selected as a throttling valve unless the manufacturer has specifically approved the application.

For replacement engineering, the following characteristics can affect installation and performance:

Pressure and temperature rating
Applicable design and connection standards
Face-to-face dimensions
End-connection dimensions
Body, bonnet, stem, gate, seat and trim materials
Bore and flow direction
Packing and gasket construction
Manual or actuated operation
Installation orientation
Fluid characteristics and corrosion conditions

A similar-looking valve with the same nominal size and pressure class should not be considered interchangeable without dimensional and technical verification.

Technical Information Required for Quotation

Required Information	Preferred Technical Evidence
Manufacturer	Complete readable nameplate
Model or Figure Number	Exact code without omitted characters or suffixes
Serial Number	Nameplate or manufacturing record
Original Construction	Manufacturer drawing, datasheet or previous purchase specification
Nominal Size	Drawing and nameplate
Pressure Class	Nameplate, drawing and applicable standard
End Connections	Flanged, welded or other connection configuration
Installation Dimensions	Face-to-face, flange dimensions and available installation envelope
Materials	Body, bonnet, gate, stem, seat, trim, packing and gasket
Fluid	Complete fluid name, composition and physical condition
Operating Conditions	Normal and maximum pressure and temperature
Design Conditions	Design pressure and design temperature
Operation	Manual, pneumatic, electric or other actuation
Existing Condition	Leakage, corrosion, erosion, stem or packing problems
Requirement	Complete valve, internal parts, repair parts or manufacturer evaluation
Commercial Reference	Quantity, end user, direct requirement or tender, and quotation deadline

Clear photographs should include the complete valve, nameplate, body markings, end connections, bonnet, stem, handwheel or actuator, and the surrounding piping arrangement.

Blueprint-style gate valve diagram on blue grid, labeled front/right/rear/left views, pressure class 150, size 90A. — Illustrated 360° external views of a Hirata Valve Industry manual gate valve, showcasing front, rear, and side perspectives for configuration review. Specifications include a nominal size of 90A, pressure class/series 150, and body material SCS13A.

Service Life and Replacement Assessment

The official Hirata gate-valve information does not state a fixed service-life value for every configuration.

Actual service life depends on the original design, fluid, pressure, temperature, operating cycles, corrosion, erosion, valve operation and maintenance history. For an installed valve, provide:

Installation or manufacturing year
Approximate operating period
Opening and closing frequency
Maintenance and repair history
Current leakage or operating problem
Reason for replacement

This information helps distinguish between normal end-of-service-life replacement, process-condition damage and a requirement caused by changes in plant operation.

Manufacturer Verification and Japan Sourcing

Once sufficient technical information is available, Nichiboku can coordinate Japan-side identification and current supply-feasibility review.

Manufacturer verification may be required to determine whether the original configuration remains available, requires updated documentation or must be evaluated as a new made-to-order requirement. Submission of an RFQ does not by itself confirm interchangeability or availability.

Review Hirata Valve Industry products through Nichiboku:

https://www.nichiboku.com/japanese-industrial-products/hirata-valve

Submit drawings, nameplate photographs and technical specifications through the