定价： 546元 / 折扣价： 465 元

Scope 1.1.1 This standard applies to newly produced automatic gas ignition systems (see Part IV, Definitions) and components constructed entirely of new, unused parts and materials. An automatic gas ignition system shall perform the following functions

定价： 4232元 / 折扣价： 3598 元

定价： 5597元 / 折扣价： 4758 元

Scope Details test and examination criteria for: (1) Temperature relief valves and combination temperature and pressure relief valves for use on storage tanks of hot water supply systems without heater input limitation; (2) Valves having only pressu

定价： 774元 / 折扣价： 658 元

Scope Details test and examination criteria for: 1.Combination temperature and pressure relief valves for use on storage tanks of hat water supply systems without heater input limitation; 2.Valves having only pressure relief features for use on st

定价： 956元 / 折扣价： 813 元

Scope These requirements apply to newly produced gas appliance thermostats of the integral gas valve type having a maximum operating gas pressure of ? psi (3.5 kPa) or electric type. This standard does not apply to an electric type comfort heating the

定价： 4277元 / 折扣价： 3636 元

Scope Details test and examination criteria for integral gas valve type and electric type thermostats which are used as integral parts of gas-burning appliances. It presents minimum levels for the substantial and durable construction, safe operation

定价： 819元 / 折扣价： 697 元

Scope Details test and examination criteria for integral gas valve type and electric type thermostats which are used as integral parts of gas-burning appliances. It presents minimum levels for the substantial and durable construction, safe operation

定价： 683元 / 折扣价： 581 元

Scope Details test and examination criteria for gas appliance connectors comprised of semi-rigid metal tubing and having a fitting at each end provided with taper pipe threads for connection to a gas appliance and to house piping, o consisting of corru

定价： 3731元 / 折扣价： 3172 元

定价： 546元 / 折扣价： 465 元

Scope Details test and examination criteria for gas appliance connectors limited to a maximum nominal length of 6 feet (1.83m). Such connectors are suitable for connecting gas-fired appliances to fixed gas supply lines containing natural, manufactured

定价： 683元 / 折扣价： 581 元

定价： 546元 / 折扣价： 465 元

1.1 Scope 1.1.1 This standard applies to newly produced, gas-fired, heat activated, air conditioning and heat pumping appliances, hereinafter referred to as appliances, constructed entirely of new, unused parts and materials, which are designed to su

定价： 5870元 / 折扣价： 4990 元

Preface The standards set forth herein apply to the first edition of the Standard for Gas-Fired, Heat Activated Air Conditioning and Heat Pump Appliances, ANSI Z21.40.1-1996/CGA 2.91-M96, and supersede corresponding standards therein. Following their p

定价： 1001元 / 折扣价： 851 元

Approved March 13, 1997 by American National Standards Institute, Inc. Approved June 28, 1996 by the Interprovincial Gas Advisory Council; Effective in Canada September, 1998.

定价： 728元 / 折扣价： 619 元