BSL / BSLM / BESL / PAL / PALM Series Pneumatic Silencer

SOLH pneumatic silencer family covers five series: BSL standard sintered bronze muffler, BSLM miniature metal silencer, BESL combined silencer with adjustable exhaust throttle, and copper-free all-plastic PAL / PALM types for food, medical and electronics environments. Thread options range from M5 to PT1/2". Brass, aluminum and full-plastic housings meet various durability, space and cleanliness requirements, reducing exhaust noise on solenoid valve and cylinder ports for clean and quiet automation workshops.

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Product Description

SOLH BSL / BSLM / BESL / PAL / PALM Series Pneumatic Silencer

Brand: SOLH by Richge Technology | Pneumatic Exhaust Muffler for Solenoid Valve & Air Cylinder

1. Model Naming Rule (Example: BSL-01)

Format: [Series Code] - [Thread Size] - [Color Code]

Position	Code	Definition	Details
1	BSL / BSLM / BESL / PAL / PALM	Silencer Type	See series comparison table below
2	01 / 02 / 03 / 04 / M5	Thread Specification	M5: M5×0.8 01: PT1/8" 02: PT1/4" 03: PT3/8" 04: PT1/2"
3	Blank / D	Color Code	Only valid for PAL & PALM: Blank = Grey D = Black Other series have no color suffix

2. Main Difference of 5 Series

Series	Full Name	Core Features	Material	Recommended Application
BSL	Standard Silencer	Standard general type, sintered metal filter element, robust & economical	Brass body + sintered bronze filter (stainless steel optional)	General industrial conditions, exhaust for solenoid valves & air cylinders
BSLM	Mini Metal Silencer	Ultra compact, lightweight for tight installation space	Aluminum body + sintered copper filter	Manifold blocks, micro solenoid valves, compact machine layout
BESL	Throttle Silencer	Silencing + adjustable exhaust throttle integrated, cylinder speed controllable	Aluminum body + sintered copper filter	Applications requiring cylinder speed regulation
PAL	Plastic Silencer	All-plastic construction, zero metal contamination, corrosion resistant	POM body + PE fiber filter	Food, medical, electronics industry, copper-free & corrosive environment
PALM	Mini Plastic Silencer	Smaller than PAL, dedicated for miniature components	Full plastic	Micro cylinders, small valve banks, ultra-narrow space

3. Selection Guide

1. Select series first according to working condition

• General use, high durability: BSL (brass, cost-effective)

• Limited space & micro components: BSLM or PALM

• Speed control + noise reduction: BESL (integrated throttle & silencer)

• Copper-free / food / medical / corrosive environment: PAL / PALM all-plastic

2. Select thread size according to equipment port

• Micro pilot valve: M5

• Standard solenoid valve / small cylinder: PT1/8 (01), PT1/4 (02)

• Large cylinder / high flow valve: PT3/8 (03), PT1/2 (04)

3. Color option (PAL & PALM only)

• Default grey: no suffix

• Black for equipment color matching: add suffix D, e.g. PAL-01-D

4. Typical Model Examples

• BSL-02: Standard brass silencer, PT1/4" thread

• BSLM-M5: Mini metal silencer, M5 thread for micro valves

• BESL-03: Throttle adjustable silencer, PT3/8"

• PAL-01: All-plastic silencer, PT1/8", grey

5. Purchasing Recommendation

• General industrial working condition, high durability → BSL (brass)

• Compact installation, micro pneumatic parts → BSLM

• Need exhaust speed regulation + noise reduction → BESL

• Copper forbidden, humid or corrosive environment → PAL / PALM

• Ultra-small mounting space → PALM

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