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GB 5135.4-2003Automatic sprinkler system - Part 4: Dry pipe valves (English PDF)

自动喷水灭火系统第4部分: 干式报警阀

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Level / Type

National · Mandatory

Issue date

October 8, 2003

Implementation date

May 1, 2004

Scope

GB 5135.4-2003 is the English-translated version of 自动喷水灭火系统第4部分: 干式报警阀.

GB 5135.4-2003 is Part 4 of the Chinese national standard series on automatic sprinkler systems and specifies the requirements, test methods, inspection rules, and marking, instructions for use, packaging, transport and storage of dry pipe valves, both differential-type and mechanical-type; it does not apply to accessories other than dry pipe valves.

The requirements cover appearance, nominal diameters from 50 mm to 250 mm, a rated working pressure of at least 1.2 MPa, corrosion-resistant materials, body connections to GB/T 9112 and GB/T 3287, springs and diaphragms for 5 000 cycles, ageing of rigid non-metallic parts, clapper seal tensile, ozone and hot water properties, body strength at 4 times the rated working pressure (at least 4.8 MPa), leakage not above 3 mL/min, hydraulic friction loss not above 0.02 MPa at flows from 600 L/min to 14 000 L/min, trip function with differential ratios of 5:1 to 8.5:1 at 0.14 MPa, intermediate chamber drain valves, latch mechanisms and an 800 °C fire resistance test.

Clause 5 gives the test methods, including air ageing (D = 737 000 e^(-0.0693 t)) and hot water ageing (D = 74 857 e^(-0.0693 t)) of non-metallic parts, clapper seal sticking, strength, leakage, friction loss and function tests; normative Annex A gives an alternative friction loss method and informative Annex B the clearance requirements.

Clauses 4 and 6 are mandatory and the rest are recommended; it mainly refers to ISO 6182.3 (1993). It was issued on 8 October 2003 and has been in force since 1 May 2004.

Classification: ICS 13.220.30, CCS C83. The document runs to 14 pages, delivered complete in English translation.

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Document preview — GB 5135.4-2003

National Standard of the People's Republic of China

ICS: 13.220.30
Classification: C83

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking and instructions for use
8 Packaging, transport and storage
Annex A (normative) Test method for the hydraulic friction loss
Annex B (informative) Clearance requirements for the dry alarm valve

3 Terms and definitions

4 Requirements

5 Test methods

6 Inspection rules

7 Marking and instructions for use

8 Packaging, transport and storage

Foreword

This part was issued on 8 October 2003 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and took effect on 1 May 2004.

Clauses 4 and 6 of this part are mandatory; the rest are recommended.

GB 5135 Automatic sprinkler system is at present planned to consist of 15 parts:

- Part 1: Sprinklers;

- Part 2: Wet alarm valves, retard chambers and water motor alarms;

- Part 3: Water mist nozzles;

- Part 4: Dry pipe valves;

- Part 5: Deluge valves;

- Part 6: General-purpose valves;

- Part 7: Water flow indicators;

- Part 8: Accelerators;

- Part 9: Early suppression fast response (ESFR) sprinklers;

- Part 10: Pressure switches;

- Part 11: Grooved pipe couplings and fittings;

- Part 12: Extended coverage sprinklers;

- Part 13: Water curtain nozzles;

- Part 14: Preaction devices;

- Part 15: Residential sprinklers;

- ...

This part is Part 4 of GB 5135.

This part mainly refers to ISO 6182.3, Automatic sprinkler systems - Requirements and test methods for dry pipe valves (English edition of 1993).

Annex A of this part is normative; Annex B is informative.

This part was proposed by the Ministry of Public Security of the People's Republic of China.

This part is under the jurisdiction of Subcommittee 2 of the National Technical Committee for Fire Protection Standardization (CSBTS/TC 113/SC2).

This part was drafted under the responsibility of the Tianjin Fire Research Institute of the Ministry of Public Security.

Main drafters of this part: Ling Guidao, Yang Zhenming, Li Yi.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 14 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 9112

Similar standards

GB 16669-2026|GB 5135.10-2006|GB 5135.11-2006|GB 5135.2-2003|GB 5135.3-2003

Editions of GB 5135.4

Edition	Title	Revision	Status
GB 5135.4-2003	Automatic sprinkler system--Part4: Dry pipe valves	current edition	Current

This page sells the current edition, GB 5135.4-2003. Earlier editions are listed for reference only.

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