Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500 Globe Valve

Luis Alberto Fing
Oct 18
2 min read

Welcome to Nichiboku's industrial Blog

Precision Control for High-Pressure Systems

When operating under extreme pressure, every component counts. Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500 Globe Valve offers unmatched durability and precision for demanding industrial applications. Designed with high-strength forged construction and engineered for reliability, this valve is the ideal choice for energy, chemical, and high-pressure gas systems.

Industrial poster of a globe valve with specs: type, style, class, size, materials, and operating modes. Dark background, prominent valve image. — Shoritsu Seisakusho’s Class 4500 non-bonnet globe valve is engineered for high-pressure environments, offering versatility with gate, globe, check, and needle valve types, available in various materials and operation styles.

Product Overview

Specification	Details
Type	Gate Valve, Globe Valve, Check Valve, and Needle Valve
Style	BB, WB, NB, PSB, and others
Class	150 to 4500
Size Range	1/4 inch to 2 inch
Materials	Carbon Steel, Stainless Steel, Low Alloy Steel, etc.
Operation Types	Manual Handwheel, Electric Motor, Air Cylinder, etc.

Why Choose the Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500?

Engineered for High-Pressure Applications

These Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500 Globe Valves are developed to withstand extreme conditions. By removing the bonnet, internal pressure containment is enhanced through a more compact, forged body—minimizing potential leak points and improving reliability in high-pressure systems.

Superior Japanese Forging

Forged in Shoritsu Seisakusho’s ISO9001-certified facility, these valves benefit from decades of Japanese metallurgical excellence. The forging process aligns metal grain flow with valve geometry, increasing resistance to cyclic loading, thermal stress, and pressure fluctuations.

Versatile Across Industries

Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500 are widely used in:

High-pressure gas systems
Petroleum refining
Chemical processing plants
Power generation equipment

Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500—For Critical Pressure Control

Focus Keyword: Shoritsu Seisakusho NON-BONNET VALVES CLASS 4500

This class of valves is trusted where failure is not an option. Their size, design, and material compatibility make them optimal for installations where safety, longevity, and performance are non-negotiable. Reference Drawings : ( pdf ) Catalog: (details)

Valve User Guides

There are complete sets for various valve types of ” VALVE USER GUIDE”.

Kinds of Valve User Guide	Code
BB-OS&Y TYPE	E199801
PRESSURE SEAL BONNET TYPE	E199802
NON-BONNET TYPE	E199803
LONG BONNET TYPE FOR LOW TEMPERATURE SERVICE (LNG)	E199804

Office scene with workers on computers. Focus on a screen displaying "Shoritsu Seisakusho Valve Model Code Generator" app. Bright setting. — Boost engineering efficiency with the Shoritsu Seisakusho Valve Model Code Generator App by Nichiboku Ltd., transforming complex valve configurations into precise model codes effortlessly.

The Nichiboku Advantage

Partnering with Nichiboku Ltd. means gaining access to premium Japanese industrial products and technical expertise.