---
product_id: 81347549
title: "301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch"
brand: "pacific seismic products"
price: "¥74176"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/81347549-301-series-horizontal-earthquake-gas-shut-off-valve-1-inch
store_origin: JP
region: Japan
---

# Earthquake-triggered safety Manual reset, fail-safe closure 1-inch NPT precision fit 301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch

**Brand:** pacific seismic products
**Price:** ¥74176
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in safety before the next quake hits!

## Quick Answers

- **What is this?** 301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch by pacific seismic products
- **How much does it cost?** ¥74176 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/81347549-301-series-horizontal-earthquake-gas-shut-off-valve-1-inch)

## Best For

- pacific seismic products enthusiasts

## Why This Product

- Trusted pacific seismic products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power-Free Operation:** No batteries or external power needed—reliable mechanical activation every time.
- • **Clear Status Indicator:** Sight glass shows open/closed valve status at a glance for peace of mind.
- • **Robust Alloy Steel Build:** Durable, coated alloy steel ensures long-lasting protection and corrosion resistance.
- • **Seismic-Activated Safety:** Automatically shuts gas flow during earthquakes to prevent fire hazards.
- • **Precision 1-Inch NPT Connections:** Standardized inlet/outlet for seamless integration with existing gas lines.

## Overview

The 301 Series Horizontal Earthquake Gas Shut-Off Valve by Pacific Seismic Products is a 1-inch, alloy steel valve designed to automatically stop gas flow during seismic events. Featuring a mechanical, acceleration-sensitive trigger with a visible status indicator, it requires no power source and ensures your property is protected from potential gas leaks and fire hazards after an earthquake.

## Description

Product Description               Pacific Seismic/California Valves are earthquake sensitive gas shut-off valves. They are intended to close in the event of an earthquake to prevent gas flow into a structure where earthquake damage may have occurred. The valve reduces the potential for fire or explosion due to the release of natural gas into a  structure where gas lines, gas fixtures, or gas appliances. PSP's valves do not use any source of internal or external electrical power. They are designed to remain closed until manually reset. The valves are intended to be mounted in the gas line upstream or downstream of the gas-line pressure regulator and gas meter outside the structure. These valves do not replace the manual upstream shut-off valves provided in the gas service line. Our valve consists of a swing check valve arrangement with an acceleration-sensitive triggering mechanism. The trip mechanism consists of a steel ball resting on a tapered cup-shaped support. The horizontal motion of an earthquake causes the ball to move from the center of the support. This allows the balls mass to act upon the movable pipe of the trip mechanism, activating the valve and initiating closure. Springs assist the valve- flapper to close and gas pressure assists in holding the valve disc in the closed position. The trip mechanism is factory set and sealed. A sight glass is provided so that the Open or Closed indicator can be seen and the trip mechanism status of the valve can be easily determined.                  From the Manufacturer               Pacific Seismic/California Valves are earthquake sensitive gas shut-off valves. They are intended to close in the event of an earthquake to prevent gas flow into a structure where earthquake damage may have occurred. The valve reduces the potential for fire or explosion due to the release of natural gas into a  structure where gas lines, gas fixtures, or gas appliances. PSP's valves do not use any source of internal or external electrical power. They are designed to remain closed until manually reset. The valves are intended to be mounted in the gas line upstream or downstream of the gas-line pressure regulator and gas meter outside the structure. These valves do not replace the manual upstream shut-off valves provided in the gas service line. Our valve consists of a swing check valve arrangement with an acceleration-sensitive triggering mechanism. The trip mechanism consists of a steel ball resting on a tapered cup-shaped support. The horizontal motion of an earthquake causes the ball to move from the center of the support. This allows the balls mass to act upon the movable pipe of the trip mechanism, activating the valve and initiating closure. Springs assist the valve- flapper to close and gas pressure assists in holding the valve disc in the closed position. The trip mechanism is factory set and sealed. A sight glass is provided so that the Open or Closed indicator can be seen, and the trip mechanism status of the valve can be easily determined.

## Features

- Earthquake Gas Shut-Off Valve
- 1" Horizontal Valve
- Model 301 Series
- Model number: 301 Series

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Alloy Steel, Glass |
| Brand | Pacific Seismic Products |
| Item dimensions L x W x H | 3.9 x 4 x 8.75 inches |
| Exterior Finish | Coated |
| Inlet Connection Size | 1 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | NPT |
| Number of Ports | 1 |
| Outlet Connection Size | 1 Inches |
| Global Trade Identification Number | 00804551664205 |
| Manufacturer | Pacific Seismic Products |
| UPC | 804551664205 |
| Part Number | 1 |
| Item Weight | 2.44 pounds |
| Product Dimensions | 3.9 x 4 x 8.75 inches |
| Item model number | 301 Series |
| Size | 4 x 3.9 x 8.75 inches |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Alloy Steel, Glass
- **Brand:** Pacific Seismic Products
- **Item dimensions L x W x H:** 3.9 x 4 x 8.75 inches
- **Exterior Finish:** Coated
- **Inlet Connection Size:** 1 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Outlet Connection Type:** NPT
- **Number of Ports:** 1
- **Outlet Connection Size:** 1 Inches
- **Global Trade Identification Number:** 00804551664205

## Images

![301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch - Image 1](https://m.media-amazon.com/images/I/71rIchVsgrL.jpg)

## Questions & Answers

**Q: good afternoon, we need technical sheets of the 3/4, 1 ", 2" and 3 "vertical and horizontal antisismic valves for natural gas.I need a link to downloa**
A: Contact the company. It's a great product and it works phenomenally well. They're old-school communicationwise, but their product is hell for stout.

**Q: Hi good day, do you have vt 316f size 4" with horizontal type...? and is it available...?**
A: Yes

**Q: Do you have the 1” vt-301 verical valve available?**
A: Yes..usually ships out within 48 business hours.

**Q: What does the pull chain do?**
A: It is an indicator that the seismic valve is installed perfectly level when the chain is centered in the hole in the bracket

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-22*