Can the Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB be disconnected under pressure?

Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB . cannot be disconnected under pressure. Description states it is not intended for connecting and disconnecting under pressure and includes a pin to prevent accidental disconnection. Working pressure is 25 bar (safety factor 4:1), but disconnection must only be performed when the line is depressurized and safe.

Is the Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB suitable for vacuum applications?

Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB Format: Yes - this coupling is suitable for many vacuum applications. It is made of highâpurity AISI 316L steel (VIMâVAR), has an internal flatâface design and is used in industries requiring ideal cleanliness (nuclear, food, pharmaceutical, semiconductor, perfumes). The flatâface construction and materials minimize contamination and leakage. Note: it is not intended for connecting/disconnecting under pressure and working pressure is rated for positive pressure (25 bar, safety factor 4:1). For specific vacuum level compatibility (e.g., rough, high, or ultraâhigh vacuum) verify seals (Viton: -20Â°C to +200Â°C; EPDM: -40Â°C to +150Â°C) and perform applicationâspecific leak testing.

Does the Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB resist corrosion in saline environments?

Yes. The Quick-connect socket with no-leak feature with female thread and valve, stainless steel, GROMELLE MLDB Format is made of AISI 316L (high-purity VIM-VAR) stainless steel, which provides very good resistance to corrosion in saline (chloride-containing) environments compared with common austenitic grades. AISI 316L has enhanced resistance to pitting and crevice corrosion in chloride media, making this coupling suitable for many saline or marine applications. However, final corrosion performance depends on factors such as chloride concentration, temperature, oxygenation, mechanical stress, crevice geometry, and exposure time. 316L performs well at moderate chloride levels and typical operating temperatures listed (-40/ -20 Â°C up to +150/ +200 Â°C depending on seal), but in highly aggressive chloride environments (e.g., warm, concentrated seawater or splash zones with prolonged wetting and crevice conditions) more resistant alloys (duplex stainless steels or superaustenitics) may be required. Seals (Viton or EPDM) and internal geometry also influence long-term behavior; ensure compatibility of the chosen seal with the fluid and temperature. For critical or prolonged exposure to highly saline or pressurized conditions, perform application-specific testing or consult the manufacturer for confirmation.

Socket quick coupling Leak-free with female thread and valve, steel stainless, GROMELLE MLDB

All products, General-purpose low-pressure quick couplings/

Additional information

Material	SS – stainless steel

Gromelle type MLDB quick-coupling socket with a shut-off valve and a female thread, of the “flat-face” type, made of steel of the highest purity (VIM-VAR vacuum melting). Used, among others, in industrial installations where perfect cleanliness is required (nuclear, food, pharmaceutical industries, semiconductor and perfume production). It has a stem to prevent accidental disconnection. Not intended for connection or disconnection under pressure. Working pressure: 25 bar (safety factor 4:1). Operating temperature: from -20°C to +200°C (viton), from -40°C to +150°C (EPDM). Material: AISI 316L steel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
GR-ML2DB-S25F-E	Quick coupling socket MLDB 1/4", 1/4" NPT female, EPDM	-	25	In stock	Enquiry
GR-ML2DB-S25F-V	Quick coupling socket MLDB 1/4", 1/4" NPT female, Viton	-	25	In stock	Enquiry
GR-ML2DB-S25FBS-E	Quick coupling socket MLDB 1/4", 1/4" BSP female, EPDM	-	25	In stock	Enquiry
GR-ML2DB-S25FBS-V	Quick coupling socket MLDB 1/4", 1/4" BSP female, Viton	-	25	In stock	Enquiry
GR-ML4DB-S50F-E	Quick coupling socket MLDB 1/2", 1/2" NPT female, EPDM	-	25	In stock	Enquiry
GR-ML4DB-S50F-V	Quick coupling socket MLDB 1/2", 1/2" NPT female, Viton	-	25	In stock	Enquiry
GR-ML4DB-S50FBS-E	Quick coupling socket MLDB 1/2", 1/2" BSP female, EPDM	-	25	In stock	Enquiry
GR-ML4DB-S50FBS-V	Quick coupling socket MLDB 1/2", 1/2" BSP female, Viton	-	25	In stock	Enquiry
GR-ML6DB-S75F-E	Quick coupling socket MLDB 3/4", 3/4" NPT female, EPDM	-	25	In stock	Enquiry
GR-ML6DB-S75F-V	Quick coupling socket MLDB 3/4", 3/4" NPT female, Viton	-	25	In stock	Enquiry
GR-ML6DB-S75FBS-E	Quick coupling socket MLDB 3/4", 3/4" BSP female, EPDM	-	25	In stock	Enquiry
GR-ML6DB-S75FBS-V	Quick coupling socket MLDB 3/4", 3/4" BSP female, Viton	-	25	In stock	Enquiry
GR-ML8DB-S100F-E	Quick coupling socket MLDB 1", 1" NPT female, EPDM	-	25	In stock	Enquiry
GR-ML8DB-S100F-V	Quick coupling socket MLDB 1", 1" NPT female, Viton	-	25	In stock	Enquiry
GR-ML8DB-S100FBS-E	Quick coupling socket MLDB 1", 1" BSP female, EPDM	-	25	In stock	Enquiry
GR-ML8DB-S100FBS-V	Quick coupling socket MLDB 1", 1" BSP female, Viton	-	25	In stock	Enquiry

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Gromelle type MLDB quick-coupling socket with a shut-off valve and a female thread, of the “flat-face” type, made of steel of the highest purity (VIM-VAR vacuum melting). Used, among others, in industrial installations where perfect cleanliness is required (nuclear, food, pharmaceutical industries, semiconductor and perfume production). It has a stem to prevent accidental disconnection. Not intended for connection or disconnection under pressure. Working pressure: 25 bar (safety factor 4:1). Operating temperature: from -20°C to +200°C (viton), from -40°C to +150°C (EPDM). Material: AISI 316L steel.