---
product_id: 81347549
title: "301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch"
brand: "pacific seismic products"
price: "€ 561.81"
currency: EUR
in_stock: true
category: "Pacific Seismic Products"
url: https://www.desertcart.hr/products/81347549-301-series-horizontal-earthquake-gas-shut-off-valve-1-inch
store_origin: HR
region: Croatia
---

# 1-inch NPT inlet/outlet size Manual reset with visible open/closed status Acceleration-sensitive steel ball trip mechanism 301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch

**Brand:** pacific seismic products
**Price:** € 561.81
**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?** € 561.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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

- • **Compact & Durable:** Alloy steel construction with a sleek coated finish fits seamlessly into your gas line.
- • **Seismic Safety First:** Automatically shuts off gas flow during earthquakes to prevent fire hazards.
- • **Power-Free Protection:** Operates without any electrical power—reliable when you need it most.
- • **Precision Engineering:** Steel ball and spring mechanism ensures rapid, fail-safe valve closure.
- • **Clear Status Visibility:** Built-in sight glass lets you instantly verify valve position—no guesswork.

## Overview

The 301 Series Horizontal Earthquake Gas Shut-Off Valve by Pacific Seismic Products is a 1-inch NPT valve designed to automatically stop gas flow during seismic events. Featuring a patented acceleration-sensitive steel ball mechanism, it requires no electrical power and includes a sight glass for easy status monitoring. Built from durable alloy steel with a coated finish, this valve enhances home and workplace safety by reducing fire and explosion risks after earthquakes.

## 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 |
|---------------|-------|
| ASIN | B00KHJ8T2A |
| Best Sellers Rank | #462,860 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #626 in Faucet Valves |
| Brand Name | Pacific Seismic Products |
| Customer Reviews | 4.5 4.5 out of 5 stars (29) |
| Exterior Finish | Coated |
| Global Trade Identification Number | 00804551664205 |
| Inlet Connection Size | 1 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 3.9 x 4 x 8.75 inches |
| Manufacturer | Pacific Seismic Products |
| Manufacturer Part Number | 1 |
| Material Type | Alloy Steel, Glass |
| Model Number | 301 Series |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 1 inches |
| Outlet Connection Type | NPT |
| Size | 4 x 3.9 x 8.75 inches |
| Thread Size | 1 inch |
| Thread Type | NPT |
| UPC | 804551664205 |
| Unit Count | 1 Count |
| Valve Type | Lift Check Valve |

## Product Details

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

## Images

![301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch - Image 1](https://m.media-amazon.com/images/I/71rIchVsgrL.jpg)
![301 Series Horizontal Earthquake Gas Shut-Off Valve, 1-Inch - Image 2](https://m.media-amazon.com/images/I/51gIoBnbjeL.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 Croatia*
*Store origin: HR*
*Last updated: 2026-10-15*